1
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Gantumur M, Hossain MI, Shahiduzzaman M, Tamang A, Rafij JH, Shahinuzzaman M, Thi Cam Tu H, Nakano M, Karakawa M, Ohdaira K, AlMohamadi H, Ibrahim MA, Sopian K, Akhtaruzzaman M, Nunzi JM, Taima T. Tungsten-Doped ZnO as an Electron Transport Layer for Perovskite Solar Cells: Enhancing Efficiency and Stability. ACS APPLIED MATERIALS & INTERFACES 2024; 16:36255-36271. [PMID: 38959094 DOI: 10.1021/acsami.4c03591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/05/2024]
Abstract
This study delves into enhancing the efficiency and stability of perovskite solar cells (PSCs) by optimizing the surface morphologies and optoelectronic properties of the electron transport layer (ETL) using tungsten (W) doping in zinc oxide (ZnO). Through a unique green synthesis process and spin-coating technique, W-doped ZnO films were prepared, exhibiting improved electrical conductivity and reduced interface defects between the ETL and perovskite layers, thus facilitating efficient electron transfer at the interface. High-quality PSCs with superior ETL demonstrated a substantial 30% increase in power conversion efficiency (PCE) compared to those employing pristine ZnO ETL. These solar cells retained over 70% of their initial PCE after 4000 h of moisture exposure, surpassing reference PSCs by 50% PCE over this period. Advanced numerical multiphysics solvers, employing finite-difference time-domain (FDTD) and finite element method (FEM) techniques, were utilized to elucidate the underlying optoelectrical characteristics of the PSCs, with simulated results corroborating experimental findings. The study concludes with a thorough discussion on charge transport and recombination mechanisms, providing insights into the enhanced performance and stability achieved through W-doped ZnO ETL optimization.
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Affiliation(s)
- Munkhtuul Gantumur
- Graduate School of Frontier Science Initiative, Kanazawa University, Kakuma, Kanazawa 920-1292, Japan
| | - Mohammad Ismail Hossain
- Department of Electrical and Computer Engineering, University of California, Davis, California 95616, United States
- Research and Development, Meta Materials Inc. (META), Pleasanton, California 94588, United States
| | - Md Shahiduzzaman
- Nanomaterials Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Asman Tamang
- Research and Development, Meta Materials Inc. (META), Pleasanton, California 94588, United States
| | - Junayed Hossain Rafij
- Department of Electrical and Electronics Engineering, Universiti Tenaga Nasional(@The Energy University), Kajang, Selangor 43000, Malaysia
| | - Md Shahinuzzaman
- Institute of Energy Research and Development, Bangladesh Council of Scientific and Industrial Research (BCSIR), Dhanmondi, Dhaka 1205, Bangladesh
| | - Huynh Thi Cam Tu
- Japan Advanced Institute of Science and Technology, Nomi, Ishikawa 923-1292, Japan
| | - Masahiro Nakano
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Makoto Karakawa
- Graduate School of Frontier Science Initiative, Kanazawa University, Kakuma, Kanazawa 920-1292, Japan
- Nanomaterials Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Keisuke Ohdaira
- Japan Advanced Institute of Science and Technology, Nomi, Ishikawa 923-1292, Japan
| | - Hamad AlMohamadi
- Department of Chemical Engineering, Faculty of Engineering, Islamic University of Madinah, Madinah 42351, Saudi Arabia
- Sustainable Research Center, Islamic University of Madinah, Madinah 42351, Saudi Arabia
| | - Mohd Adib Ibrahim
- Solar Energy Research Institute (SERI), Universiti Kebangsaan Malaysia (UKM), Bangi 43600, Selangor, Malaysia
| | - Kamaruzzaman Sopian
- Department of Mechanical Engineering, Universiti Teknologi Petronas, Seri Iskandar 32610, Malaysia
| | - Md Akhtaruzzaman
- Sustainable Research Center, Islamic University of Madinah, Madinah 42351, Saudi Arabia
- The Department of Chemistry, Faculty of Science, The Islamic University of Madinah, Madinah, Abo Bakr Al Siddiq, Al Jamiah, Madinah 42351, Saudi Arabia
| | - Jean Michel Nunzi
- Nanomaterials Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- Department of Physics, Engineering Physics and Astronomy, Queens University, Kingston K7L 3N6, Ontario, Canada
| | - Tetsuya Taima
- Graduate School of Frontier Science Initiative, Kanazawa University, Kakuma, Kanazawa 920-1292, Japan
- Nanomaterials Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
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2
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Gonzales C, Bou A, Guerrero A, Bisquert J. Capacitive and Inductive Characteristics of Volatile Perovskite Resistive Switching Devices with Analog Memory. J Phys Chem Lett 2024; 15:6496-6503. [PMID: 38869927 PMCID: PMC11215770 DOI: 10.1021/acs.jpclett.4c00945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Revised: 05/31/2024] [Accepted: 06/07/2024] [Indexed: 06/14/2024]
Abstract
With the increasing demands and complexity of the neuromorphic computing schemes utilizing highly efficient analog resistive switching devices, understanding the apparent capacitive and inductive effects in device operation is of paramount importance. Here, we present a systematic array of characterization methods that unravel two distinct voltage-dependent regimes demonstrating the complex interplay between the dynamic capacitive and inductive effects in volatile perovskite-based memristors: (1) a low voltage capacitance-dominant and (2) an inductance-dominant regime evidenced by the highly correlated hysteresis type with nonzero crossing, the impedance responses, and the transient current characteristics. These dynamic capacitance- and inductance-dominant regimes provide fundamental insight into the resistive switching of memristors governing the synaptic depression and potentiation functions, respectively. More importantly, the pulse width-dependent and long-term transient current measurements further demonstrate a dynamic transition from a fast capacitive to a slow inductive response, allowing for the tailored stimulus programming of memristor devices to mimic synaptic functionality.
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Affiliation(s)
- Cedric Gonzales
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, 12006 Castelló, Spain
| | - Agustín Bou
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, 12006 Castelló, Spain
- Leibniz-Institute
for Solid State and Materials Research Dresden, Helmholtzstraße 20, 01069 Dresden, Germany
| | - Antonio Guerrero
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, 12006 Castelló, Spain
| | - Juan Bisquert
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, 12006 Castelló, Spain
- Instituto
de Tecnología Química (Universitat Politècnica
de València-Agencia Estatal Consejo Superior de Investigaciones
Científicas), Av. dels Tarongers, 46022, València, Spain
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3
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Anta JA, Oskam G, Pistor P. The dual nature of metal halide perovskites. J Chem Phys 2024; 160:150901. [PMID: 38624112 DOI: 10.1063/5.0190890] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 03/14/2024] [Indexed: 04/17/2024] Open
Abstract
Metal halide perovskites have brought about a disruptive shift in the field of third-generation photovoltaics. Their potential as remarkably efficient solar cell absorbers was first demonstrated in the beginning of the 2010s. However, right from their inception, persistent challenges have impeded the smooth adoption of this technology in the industry. These challenges encompass issues such as the lack of reproducibility in fabrication, limited mid- and long-term stability, and concerns over toxicity. Despite achieving record efficiencies that have outperformed even well-established technologies, such as polycrystalline silicon, these hurdles have hindered the seamless transition of this technology into industrial applications. In this Perspective, we discuss which of these challenges are rooted in the unique dual nature of metal halide perovskites, which simultaneously function as electronic and ionic semiconductors. This duality results in the intermingling of processes occurring at vastly different timescales, still complicating both their comprehensive investigation and the development of robust and dependable devices. Our discussion here undertakes a critical analysis of the field, addressing the current status of knowledge for devices based on halide perovskites in view of electronic and ionic conduction, the underlying models, and the challenges encountered when these devices are optoelectronically characterized. We place a distinct emphasis on the positive contributions that this area of research has not only made to the advancement of photovoltaics but also to the broader progress of solid-state physics and photoelectrochemistry.
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Affiliation(s)
- Juan A Anta
- Center for Nanoscience and Sustainable Technologies (CNATS), Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, 41013 Sevilla, Spain
| | - Gerko Oskam
- Center for Nanoscience and Sustainable Technologies (CNATS), Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, 41013 Sevilla, Spain
- Department of Applied Physics, CINVESTAV-IPN, Mérida, Yuc. 97310, Mexico
| | - Paul Pistor
- Center for Nanoscience and Sustainable Technologies (CNATS), Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, 41013 Sevilla, Spain
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4
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Tammireddy S, Lintangpradipto MN, Telschow O, Futscher MH, Ehrler B, Bakr OM, Vaynzof Y, Deibel C. Hysteresis and Its Correlation to Ionic Defects in Perovskite Solar Cells. J Phys Chem Lett 2024; 15:1363-1372. [PMID: 38286839 PMCID: PMC10860142 DOI: 10.1021/acs.jpclett.3c03146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 01/15/2024] [Accepted: 01/25/2024] [Indexed: 01/31/2024]
Abstract
Ion migration has been reported to be one of the main reasons for hysteresis in the current-voltage (J-V) characteristics of perovskite solar cells. We investigate the interplay between ionic conduction and hysteresis types by studying Cs0.05(FA0.83MA0.17)0.95Pb(I0.9Br0.1)3 triple-cation perovskite solar cells through a combination of impedance spectroscopy (IS) and sweep-rate-dependent J-V curves. By comparing polycrystalline devices to single-crystal MAPbI3 devices, we separate two defects, β and γ, both originating from long-range ionic conduction in the bulk. Defect β is associated with a dielectric relaxation, while the migration of γ is influenced by the perovskite/hole transport layer interface. These conduction types are the causes of different types of hysteresis in J-V curves. The accumulation of ionic defects at the transport layer is the dominant cause for observing tunnel-diode-like characteristics in the J-V curves. By comparing devices with interface modifications at the electron and hole transport layers, we discuss the species and polarity of involved defects.
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Affiliation(s)
- Sandhya Tammireddy
- Institut
für Physik, Technische Universität
Chemnitz, 09126 Chemnitz, Germany
| | - Muhammad N. Lintangpradipto
- KAUST
Catalysis Center (KCC), Division of Physical Sciences and Engineering
(PSE), King Abdullah University of Science
and Technology, Thuwal 23955-6900, Kingdom
of Saudi Arabia
| | - Oscar Telschow
- Chair
for Emerging Electronic Technologies, Technical
University of Dresden, Nöthnitzer Str. 61, 01187 Dresden, Germany
- Leibniz-Institute
for Solid State and Materials Research Dresden, Helmholtzstraße 20, 01069 Dresden, Germany
| | - Moritz H. Futscher
- Laboratory
for Thin Films and Photovoltaics, Empa -
Swiss Federal Laboratories for Materials Science and Technology, 8600 Dübendorf, Switzerland
| | - Bruno Ehrler
- Center
for Nanophotonics, AMOLF, Science Park 104, 1098 XG Amsterdam, The Netherlands
| | - Osman M. Bakr
- KAUST
Catalysis Center (KCC), Division of Physical Sciences and Engineering
(PSE), King Abdullah University of Science
and Technology, Thuwal 23955-6900, Kingdom
of Saudi Arabia
| | - Yana Vaynzof
- Chair
for Emerging Electronic Technologies, Technical
University of Dresden, Nöthnitzer Str. 61, 01187 Dresden, Germany
- Leibniz-Institute
for Solid State and Materials Research Dresden, Helmholtzstraße 20, 01069 Dresden, Germany
| | - Carsten Deibel
- Institut
für Physik, Technische Universität
Chemnitz, 09126 Chemnitz, Germany
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5
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Tang J, Zhang G, Wang C, Deng L, Zhu X, Yu H, Wang K, Li J. Investigation of the Role of K 2SO 4 Electrolyte in Hole Transport Layer for Efficient Quasi-2D Perovskite Light-Emitting Diodes. J Phys Chem Lett 2024; 15:1112-1120. [PMID: 38262437 DOI: 10.1021/acs.jpclett.3c03417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2024]
Abstract
Quasi-two-dimensional (2D) perovskite light-emitting diodes are promising light sources for color display and lighting. However, poor carrier injection and transport between the bottom hole transport layer (HTL) and perovskite limit the device performance. Here we demonstrate a simple and effective way to modify the HTL for enhancing the performance of perovskite light-emitting diodes (PeLEDs). An electrolyte K2SO4 is used to mix with poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) as the hole transport layer. The K+ doping helped the quasi-2D perovskite phases grow vertically along the interface of the PEDOT:PSS, fine-modulate the phase distribution, and simultaneously reduce the defect density of quasi-2D perovskites. It also significantly reduced the exciton quenching and injection barrier at PEDOT:PSS and quasi-2D perovskite interface. The optimized green PeLEDs with the K2SO4 doped PEDOT:PSS HTL showed a maximum luminance of 17185 cd/m2 which is almost 4.7 times brighter than the control one, with a maximum external quantum efficiency of 18.64%.
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Affiliation(s)
- Jun Tang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Guoshuai Zhang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Chenming Wang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Liangliang Deng
- Center of Micro-Nano System, School of Information Science and Technology, Fudan University, Shanghai 200438, China
| | - Xixiang Zhu
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Haomiao Yu
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Kai Wang
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing 100044, China
| | - Jinpeng Li
- Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Physical Science and Engineering, Beijing Jiaotong University, Beijing 100044, China
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6
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Dey K, Ghosh D, Pilot M, Pering SR, Roose B, Deswal P, Senanayak SP, Cameron PJ, Islam MS, Stranks SD. Substitution of lead with tin suppresses ionic transport in halide perovskite optoelectronics. ENERGY & ENVIRONMENTAL SCIENCE 2024; 17:760-769. [PMID: 38269299 PMCID: PMC10805128 DOI: 10.1039/d3ee03772j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Accepted: 11/23/2023] [Indexed: 01/26/2024]
Abstract
Despite the rapid rise in the performance of a variety of perovskite optoelectronic devices with vertical charge transport, the effects of ion migration remain a common and longstanding Achilles' heel limiting the long-term operational stability of lead halide perovskite devices. However, there is still limited understanding of the impact of tin (Sn) substitution on the ion dynamics of lead (Pb) halide perovskites. Here, we employ scan-rate-dependent current-voltage measurements on Pb and mixed Pb-Sn perovskite solar cells to show that short circuit current losses at lower scan rates, which can be traced to the presence of mobile ions, are present in both kinds of perovskites. To understand the kinetics of ion migration, we carry out scan-rate-dependent hysteresis analyses and temperature-dependent impedance spectroscopy measurements, which demonstrate suppressed ion migration in Pb-Sn devices compared to their Pb-only analogues. By linking these experimental observations to first-principles calculations on mixed Pb-Sn perovskites, we reveal the key role played by Sn vacancies in increasing the iodide ion migration barrier due to local structural distortions. These results highlight the beneficial effect of Sn substitution in mitigating undesirable ion migration in halide perovskites, with potential implications for future device development.
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Affiliation(s)
- Krishanu Dey
- Cavendish Laboratory, University of Cambridge Cambridge UK
| | - Dibyajyoti Ghosh
- Department of Materials Science and Engineering and Department of Chemistry, Indian Institute of Technology Delhi Hauz Khas India
| | | | - Samuel R Pering
- Department of Materials, Loughborough University Loughborough UK
| | - Bart Roose
- Department of Chemical Engineering and Biotechnology, University of Cambridge Cambridge UK
| | - Priyanka Deswal
- Department of Physics, Indian Institute of Technology Delhi Hauz Khas India
| | - Satyaprasad P Senanayak
- Nanoelectronics and Device Physics Lab,School of Physical Sciences, National Institute of Science Education and Research, HBNI, Jatni India
| | | | | | - Samuel D Stranks
- Cavendish Laboratory, University of Cambridge Cambridge UK
- Department of Chemical Engineering and Biotechnology, University of Cambridge Cambridge UK
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7
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Dörflinger P, Ding Y, Schmid V, Armer M, Turnell-Ritson RC, Ding B, Dyson PJ, Nazeeruddin MK, Dyakonov V. Influence of an Organic Salt-Based Stabilizing Additive on Charge Carrier Dynamics in Triple Cation Perovskite Solar Cells. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2304502. [PMID: 37807807 DOI: 10.1002/advs.202304502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 09/11/2023] [Indexed: 10/10/2023]
Abstract
Besides further improvement in the power conversion efficiency (PCE) of perovskite solar cells (PSC), their long-term stability must also be ensured. Additives such as organic cations with halide counter anions are considered promising candidates to address this challenge, conferring both higher performance and increased stability to perovskite-based devices. Here, a stabilizing additive (N,N-dimethylmethyleneiminium chloride, [Dmmim]Cl) is identified, and its effect on charge carrier mobility and lifetime under thermal stress in triple cation perovskite (Cs0.05 MA0.05 FA0.90 PbI3 ) thin films is investigated. To explore the fundamental mechanisms limiting charge carrier mobility, temperature-dependent microwave conductivity measurements are performed. Different mobility behaviors across two temperature regions are revealed, following the power law Tm , indicating two different dominant scattering mechanisms. The low-temperature region is assigned to charge carrier scattering with polar optical phonons, while a strong decrease in mobility at high temperatures is due to dynamic disorder. The results obtained rationalize the improved stability of the [Dmmim]Cl-doped films and devices compared to the undoped reference samples, by limiting temperature-activated mobile ions and retarding degradation of the perovskite film.
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Affiliation(s)
- Patrick Dörflinger
- Experimental Physics 6, Julius Maximilian University of Würzburg, 97074, Würzburg, Germany
| | - Yong Ding
- Institute of Chemical Sciences and Engineering, École Polytechnique Fedérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - Valentin Schmid
- Experimental Physics 6, Julius Maximilian University of Würzburg, 97074, Würzburg, Germany
| | - Melina Armer
- Experimental Physics 6, Julius Maximilian University of Würzburg, 97074, Würzburg, Germany
| | - Roland C Turnell-Ritson
- Institute of Chemical Sciences and Engineering, École Polytechnique Fedérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - Bin Ding
- Institute of Chemical Sciences and Engineering, École Polytechnique Fedérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - Paul J Dyson
- Institute of Chemical Sciences and Engineering, École Polytechnique Fedérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - Mohammad Khaja Nazeeruddin
- Institute of Chemical Sciences and Engineering, École Polytechnique Fedérale de Lausanne (EPFL), Lausanne, 1015, Switzerland
| | - Vladimir Dyakonov
- Experimental Physics 6, Julius Maximilian University of Würzburg, 97074, Würzburg, Germany
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8
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Zhong Y, Yang J, Wang X, Liu Y, Cai Q, Tan L, Chen Y. Inhibition of Ion Migration for Highly Efficient and Stable Perovskite Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2302552. [PMID: 37067957 DOI: 10.1002/adma.202302552] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/13/2023] [Indexed: 06/19/2023]
Abstract
In recent years, organic-inorganic halide perovskites are now emerging as the most attractive alternatives for next-generation photovoltaic devices, due to their excellent optoelectronic characteristics and low manufacturing cost. However, the resultant perovskite solar cells (PVSCs) are intrinsically unstable owing to ion migration, which severely impedes performance enhancement, even with device encapsulation. There is no doubt that the investigation of ion migration and the summarization of recent advances in inhibition strategies are necessary to develop "state-of-the-art" PVSCs with high intrinsic stability for accelerated commercialization. This review systematically elaborates on the generation and fundamental mechanisms of ion migration in PVSCs, the impact of ion migration on hysteresis, phase segregation, and operational stability, and the characterizations for ion migration in PVSCs. Then, many related works on the strategies for inhibiting ion migration toward highly efficient and stable PVSCs are summarized. Finally, the perspectives on the current obstacles and prospective strategies for inhibition of ion migration in PVSCs to boost operational stability and meet all of the requirements for commercialization success are summarized.
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Affiliation(s)
- Yang Zhong
- College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Jia Yang
- College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Xueying Wang
- College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Yikun Liu
- College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Qianqian Cai
- College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Licheng Tan
- College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
- Peking University Yangtze Delta Institute of Optoelectronics, Nantong, 226010, China
| | - Yiwang Chen
- College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
- National Engineering Research Center for Carbohydrate Synthesis/Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, 99 Ziyang Avenue, Nanchang, 330022, China
- College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou, 341000, China
- Peking University Yangtze Delta Institute of Optoelectronics, Nantong, 226010, China
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9
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Zhang M, Feng Q, Li S, Nan G. Role of Dipolar Organic Cations on Light-triggered Charge Transfer at TiO 2 /CH 3 NH 3 PbI 3 Interfaces. Chemphyschem 2023; 24:e202300376. [PMID: 37584533 DOI: 10.1002/cphc.202300376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 08/11/2023] [Accepted: 08/16/2023] [Indexed: 08/17/2023]
Abstract
The TiO2 /MAPbI3 (MA=CH3 NH3 ) interfaces have manifested correlation with current-voltage hysteresis in perovskite solar cells (PSCs) under light illumination conditions, but the relations between the photo-induced charge transfer and the collective polarization response of the dipolar MA cations are largely unexplored. In this work, we adopt density functional theory (DFT) and time-dependent DFT approach to study the light-triggered charge transfer across the TiO2 /MAPbI3 interfaces with MAI- and PbI-exposed terminations. It is found that regardless of the surface exposure of the MAPbI3 , the photo-induced charge transfer varies when going from the ground-state geometries to the excited-state configurations. Besides, thanks to the electrostatic interactions between the ends of MA cations and the photogenerated electrons, the photo-induced charge transfer across the interfaces is enhanced (weakened) by the negatively (positively) charged CH3 (NH3 ) moieties of the MA species. Resultantly, the positively charged iodine vacancies at the TiO2 /MAPbI3 interfaces tend to inhibit the charge transfer induced by light. Combining with the energy level alignment which is significantly modulated by the orientation of the MA species at the interfaces, the dipolar MA cations might be a double-edge sword for the hysteresis in PSCs with the TiO2 /MAPbI3 interfaces.
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Affiliation(s)
- Mingfang Zhang
- Department of Physics, Zhejiang Normal University, Jinhua, Zhejiang, 321004, P. R. China
| | - Qingjie Feng
- Department of Physics, Zhejiang Normal University, Jinhua, Zhejiang, 321004, P. R. China
| | - Sheng Li
- Department of Physics, Zhejiang Normal University, Jinhua, Zhejiang, 321004, P. R. China
- Zhejiang Institute of Photoelectronics & Zhejiang Institute for Advanced Light Source, Zhejiang Normal University, Jinhua, Zhejiang, 321004, P. R. China
| | - Guangjun Nan
- Department of Physics, Zhejiang Normal University, Jinhua, Zhejiang, 321004, P. R. China
- Zhejiang Institute of Photoelectronics & Zhejiang Institute for Advanced Light Source, Zhejiang Normal University, Jinhua, Zhejiang, 321004, P. R. China
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
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10
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Grater L, Wang M, Teale S, Mahesh S, Maxwell A, Liu Y, Park SM, Chen B, Laquai F, Kanatzidis MG, Sargent EH. Sterically Suppressed Phase Segregation in 3D Hollow Mixed-Halide Wide Band Gap Perovskites. J Phys Chem Lett 2023:6157-6162. [PMID: 37368406 DOI: 10.1021/acs.jpclett.3c01156] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Band gap tuning in mixed-halide perovskites enables efficient multijunction solar cells and LEDs. However, these wide band gap perovskites, which contain a mixture of iodide and bromide ions, are known to phase segregate under illumination, introducing voltage losses that limit stability. Previous studies have employed inorganic perovskites, halide alloys, and grain/interface passivation to minimize halide segregation, yet photostability can be further advanced. By focusing on the role of halide vacancies in anion migration, one expects to be able to erect local barriers to ion migration. To achieve this, we employ a 3D "hollow" perovskite structure, wherein a molecule that is otherwise too large for the perovskite lattice is incorporated. The amount of hollowing agent, ethane-1,2-diammonium dihydroiodide (EDA), varies the density of the hollow sites. Photoluminescence measurements reveal that 1% EDA in the perovskite bulk can stabilize a 40% bromine mixed-halide perovskite at 1 sun illumination intensity. These, along with capacitance-frequency measurements, suggest that hollow sites limit the mobility of the halide vacancies.
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Affiliation(s)
- Luke Grater
- Department of Electrical and Computer Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4 Canada
| | - Mingcong Wang
- King Abdullah University of Science and Technology (KAUST), KAUST Solar Center (KSC), Physical Sciences and Engineering Division (PSE), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Sam Teale
- Department of Electrical and Computer Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4 Canada
| | - Suhas Mahesh
- Department of Electrical and Computer Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4 Canada
| | - Aidan Maxwell
- Department of Electrical and Computer Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4 Canada
| | - Yanjiang Liu
- Department of Electrical and Computer Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4 Canada
| | - So Min Park
- Department of Electrical and Computer Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4 Canada
| | - Bin Chen
- Department of Electrical and Computer Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4 Canada
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Frédéric Laquai
- King Abdullah University of Science and Technology (KAUST), KAUST Solar Center (KSC), Physical Sciences and Engineering Division (PSE), Thuwal 23955-6900, Kingdom of Saudi Arabia
| | - Mercouri G Kanatzidis
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
| | - Edward H Sargent
- Department of Electrical and Computer Engineering, University of Toronto, 35 St. George Street, Toronto, Ontario, M5S 1A4 Canada
- Department of Chemistry, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
- Department of Electrical and Computer Engineering, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, United States
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11
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Ašmontas S, Mujahid M. Recent Progress in Perovskite Tandem Solar Cells. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1886. [PMID: 37368318 DOI: 10.3390/nano13121886] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 06/12/2023] [Accepted: 06/14/2023] [Indexed: 06/28/2023]
Abstract
Tandem solar cells are widely considered the industry's next step in photovoltaics because of their excellent power conversion efficiency. Since halide perovskite absorber material was developed, it has been feasible to develop tandem solar cells that are more efficient. The European Solar Test Installation has verified a 32.5% efficiency for perovskite/silicon tandem solar cells. There has been an increase in the perovskite/Si tandem devices' power conversion efficiency, but it is still not as high as it might be. Their instability and difficulties in large-area realization are significant challenges in commercialization. In the first part of this overview, we set the stage by discussing the background of tandem solar cells and their development over time. Subsequently, a concise summary of recent advancements in perovskite tandem solar cells utilizing various device topologies is presented. In addition, we explore the many possible configurations of tandem module technology: the present work addresses the characteristics and efficacy of 2T monolithic and mechanically stacked four-terminal devices. Next, we explore ways to boost perovskite tandem solar cells' power conversion efficiencies. Recent advancements in the efficiency of tandem cells are described, along with the limitations that are still restricting their efficiency. Stability is also a significant hurdle in commercializing such devices, so we proposed eliminating ion migration as a cornerstone strategy for solving intrinsic instability problems.
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Affiliation(s)
- Steponas Ašmontas
- Center for Physical Sciences and Technology, Saulėtekio Ave. 3, LT-10257 Vilnius, Lithuania
| | - Muhammad Mujahid
- Center for Physical Sciences and Technology, Saulėtekio Ave. 3, LT-10257 Vilnius, Lithuania
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12
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Diekmann J, Peña-Camargo F, Tokmoldin N, Thiesbrummel J, Warby J, Gutierrez-Partida E, Shah S, Neher D, Stolterfoht M. Determination of Mobile Ion Densities in Halide Perovskites via Low-Frequency Capacitance and Charge Extraction Techniques. J Phys Chem Lett 2023; 14:4200-4210. [PMID: 37115820 DOI: 10.1021/acs.jpclett.3c00530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Mobile ions in perovskite photovoltaic devices can hinder performance and cause degradation by impeding charge extraction and screening the internal field. Accurately quantifying mobile ion densities remains a challenge and is a highly debated topic. We assess the suitability of several experimental methodologies for determining mobile ion densities by using drift-diffusion simulations. We found that charge extraction by linearly increasing voltage (CELIV) underestimates ion density, but bias-assisted charge extraction (BACE) can accurately reproduce ionic lower than the electrode charge. A modified Mott-Schottky (MS) analysis at low frequencies can provide ion density values for high excess ionic densities, typical for perovskites. The most significant contribution to capacitance originates from the ionic depletion layer rather than the accumulation layer. Using low-frequency MS analysis, we also demonstrate light-induced generation of mobile ions. These methods enable accurate tracking of ionic densities during device aging and a deeper understanding of ionic losses.
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Affiliation(s)
- Jonas Diekmann
- Institute of Physics and Astronomy, University of Potsdam, D-14476 Potsdam-Golm, Germany
| | - Francisco Peña-Camargo
- Institute of Physics and Astronomy, University of Potsdam, D-14476 Potsdam-Golm, Germany
| | - Nurlan Tokmoldin
- Institute of Physics and Astronomy, University of Potsdam, D-14476 Potsdam-Golm, Germany
| | - Jarla Thiesbrummel
- Institute of Physics and Astronomy, University of Potsdam, D-14476 Potsdam-Golm, Germany
| | - Jonathan Warby
- Institute of Physics and Astronomy, University of Potsdam, D-14476 Potsdam-Golm, Germany
| | | | - Sahil Shah
- Institute of Physics and Astronomy, University of Potsdam, D-14476 Potsdam-Golm, Germany
| | - Dieter Neher
- Institute of Physics and Astronomy, University of Potsdam, D-14476 Potsdam-Golm, Germany
| | - Martin Stolterfoht
- Institute of Physics and Astronomy, University of Potsdam, D-14476 Potsdam-Golm, Germany
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13
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Moia D, Jung M, Wang YR, Maier J. Ionic and electronic polarization effects in horizontal hybrid perovskite device structures close to equilibrium. Phys Chem Chem Phys 2023; 25:13335-13350. [PMID: 37144574 DOI: 10.1039/d3cp01182h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
The electrical response of hybrid perovskite devices carries a significant signature from mobile ionic defects, pointing to both opportunities and threats when it comes to functionality, performance and stability of these devices. Despite its importance, the interpretation of polarization effects due to the mixed ionic-electronic conducting nature of these materials and the quantification of their ionic conductivities still poses conceptual and practical challenges, even for the equilibrium situation. In this study, we address these questions and investigate the electrical response of horizontal devices based on methylammonium lead iodide (MAPI) close to equilibrium conditions. We discuss the interpretation of DC polarization and impedance spectroscopy measurements in the dark, based on calculated and fitted impedance spectra obtained using equivalent circuit models that account for the mixed conductivity of the perovskite and for the effect of device geometry. Our results show that, for horizontal structures with a gap width between the metal electrodes in the order of tens of microns, the polarization behavior of MAPI is well described by the charging of the mixed conductor/metal interface, suggesting a Debye length in the perovskite close to 1 nm. We highlight a signature in the impedance response at intermediate frequencies, which we assign to ionic diffusion in the plane parallel to the MAPI/contact interface. By comparing the experimental impedance results with calculated spectra for different circuit models, we discuss the potential role of multiple mobile ionic species and rule out a significant contribution from iodine exchange with the gas phase in the electrical response of MAPI close to equilibrium. This study helps to clarify the measurement and interpretation of mixed conductivity and polarization effects in hybrid perovskites with immediate relevance to the characterization and development of transistors, memristors and solar cells based on this class of materials as well as other mixed conductors.
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Affiliation(s)
- Davide Moia
- Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569, Stuttgart, Germany.
| | - Mina Jung
- Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569, Stuttgart, Germany.
| | - Ya-Ru Wang
- Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569, Stuttgart, Germany.
| | - Joachim Maier
- Max Planck Institute for Solid State Research, Heisenbergstr. 1, 70569, Stuttgart, Germany.
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14
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MDACl2-Modified SnO2 Film for Efficient Planar Perovskite Solar Cells. Molecules 2023; 28:molecules28062668. [PMID: 36985640 PMCID: PMC10056177 DOI: 10.3390/molecules28062668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2023] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/17/2023] Open
Abstract
The electron transport layer (ETL) with excellent charge extraction and transport ability is one of the key components of high-performance perovskite solar cells (PSCs). SnO2 has been considered as a more promising ETL for the future commercialization of PSCs due to its excellent photoelectric properties and easy processing. Herein, we propose a facile and effective ETL modification strategy based on the incorporation of methylenediammonium dichloride (MDACl2) into the SnO2 precursor colloidal solution. The effects of MDACl2 incorporation on charge transport, defect passivation, perovskite crystallization, and PSC performance are systematically investigated. First, the surface defects of the SnO2 film are effectively passivated, resulting in the increased conductivity of the SnO2 film, which is conducive to electron extraction and transport. Second, the MDACl2 modification contributes to the formation of high-quality perovskite films with improved crystallinity and reduced defect density. Furthermore, a more suitable energy level alignment is achieved at the ETL/perovskite interface, which facilitates the charge transport due to the lower energy barrier. Consequently, the MDACl2-modified PSCs exhibit a champion efficiency of 22.30% compared with 19.62% of the control device, and the device stability is also significantly improved.
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15
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Xue Z, Xu Y, Jin C, Liang Y, Cai Z, Sun J. Halide perovskite photoelectric artificial synapses: materials, devices, and applications. NANOSCALE 2023; 15:4653-4668. [PMID: 36805124 DOI: 10.1039/d2nr06403k] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
In recent years, there has been a research boom on halide perovskites (HPs) whose outstanding performance in photovoltaic and optoelectronic fields is obvious to all. In particular, HP materials find application in the development of artificial synapses. HP-based synapses have great potential for artificial neuromorphic systems, which is due to their outstanding optoelectronic properties, femtojoule-level energy consumption, and simple fabrication process. In this review, we present the physical properties of HPs and describe two types of synaptic devices including two-terminal (2T) memristors and three-terminal (3T) transistors. The HP layer in 2T memristors can realize the change in the device conductance through physical mechanisms dominated by ion migration. On the other hand, HPs in 3T transistors can be used as efficient light-absorbing layers and rely on some special device structures to provide reliable current changes. In the final section of the article, we discuss some of the existing applications of HP-based synapses and bottlenecks to be solved.
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Affiliation(s)
- Zhengyang Xue
- Hunan Key Laboratory for Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South, University, Changsha, Hunan 410083, P. R. China.
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, Hunan 410083, P. R. China
| | - Yunchao Xu
- Hunan Key Laboratory for Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South, University, Changsha, Hunan 410083, P. R. China.
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, Hunan 410083, P. R. China
| | - Chenxing Jin
- Hunan Key Laboratory for Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South, University, Changsha, Hunan 410083, P. R. China.
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, Hunan 410083, P. R. China
| | - Yihuan Liang
- Hunan Key Laboratory for Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South, University, Changsha, Hunan 410083, P. R. China.
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, Hunan 410083, P. R. China
| | - Zihao Cai
- Hunan Key Laboratory for Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South, University, Changsha, Hunan 410083, P. R. China.
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, Hunan 410083, P. R. China
| | - Jia Sun
- Hunan Key Laboratory for Super Microstructure and Ultrafast Process, School of Physics and Electronics, Central South, University, Changsha, Hunan 410083, P. R. China.
- Hunan Key Laboratory of Nanophotonics and Devices, School of Physics and Electronics, Central South University, Changsha, Hunan 410083, P. R. China
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16
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Accelerating defect analysis of solar cells via machine learning of the modulated transient photovoltage. FUNDAMENTAL RESEARCH 2023. [DOI: 10.1016/j.fmre.2023.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
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17
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Hao X, Zhang X, Sun B, Yin D, Dong H, Wang J, Huang B, Xu Y, Shan H, Ma S, Chen C, Xu B. Atomic-Scale Insights into the Interfacial Polarization Effect in the InGaN/GaN Heterostructure for Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:55762-55769. [PMID: 36509550 DOI: 10.1021/acsami.2c17082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The model system of the InGaN/GaN quantum wells (QWs), based on the first principles calculation, was chosen to understand the underlying mechanism of interfacial polarization and its synergic effect with the built-in electric field (Bef) at the p-n junction in solar cells (SLs). The polarized electric field (Pef) was generated due to the redistribution of electrons and holes at the interface; moreover, the Pef of InGaN/GaN heterostructure on the semipolar (01-11) GaN surface was consistent with that of on the N-polar (000-1) surface, which is on the lines of the Bef and favors the electron-hole separation efficiency in SLs. Furthermore, the growth of high-quality InGaN/GaN QWs on the semipolar (01-11) GaN surface was achieved. Such an atomic-scale investigation provides a fundamental understanding of the polarization charge-induced Pef and its interaction coupling with Bef at the p-n junction, which could be generalized to polar material-based SLs.
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Affiliation(s)
- Xiaodong Hao
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Xishuo Zhang
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi'an 710021, China
- School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Benyao Sun
- College of Aerospace Engineering, Chongqing University, Chongqing 400044, China
| | - Deqiang Yin
- College of Aerospace Engineering, Chongqing University, Chongqing 400044, China
| | - Hailiang Dong
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Taiyuan 030024, China
| | - Jiahui Wang
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi'an 710021, China
- School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Biao Huang
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi'an 710021, China
- School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Yang Xu
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi'an 710021, China
- School of Materials Science and Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Hengsheng Shan
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Shufang Ma
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi'an 710021, China
| | - Chunlin Chen
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Bingshe Xu
- Materials Institute of Atomic and Molecular Science, Shaanxi University of Science and Technology, Xi'an 710021, China
- Key Laboratory of Interface Science and Engineering in Advanced Materials, Taiyuan University of Technology, Taiyuan 030024, China
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030024, China
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18
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Zhang Y, Vafaie M, Xu J, Pina JM, Xia P, Najarian AM, Atan O, Imran M, Xie K, Hoogland S, Sargent EH. Electron-Transport Layers Employing Strongly Bound Ligands Enhance Stability in Colloidal Quantum Dot Infrared Photodetectors. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2206884. [PMID: 36134538 DOI: 10.1002/adma.202206884] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 09/04/2022] [Indexed: 06/16/2023]
Abstract
Solution-processed photodetectors based on colloidal quantum dots (CQDs) are promising candidates for short-wavelength infrared light sensing applications. Present-day CQD photodetectors employ a CQD active layer sandwiched between carrier-transport layers in which the electron-transport layer (ETL) is composed of metal oxides. Herein, a new class of ETLs is developed using n-type CQDs, finding that these benefit from quantum-size effect tuning of the band energies, as well as from surface ligand engineering. Photodetectors operating at 1450 nm are demonstrated using CQDs with tailored functionalities for each of the transport layers and the active layer. By optimizing the band alignment between the ETL and the active layer, CQD photodetectors that combine a low dark current of ≈1 × 10-3 mA cm-2 with a high external quantum efficiency of ≈66% at 1 V are reported, outperforming prior reports of CQD photodetectors operating at >1400 nm that rely on metal oxides as ETLs. It is shown that stable CQD photodetectors rely on well-passivated CQDs: for ETL CQDs, a strongly bound organic ligand trans-4-(trifluoromethyl)cinnamic acid (TFCA) provides improved passivation compared to the weakly bound inorganic ligand tetrabutylammonium iodide (TBAI). TFCA suppresses bias-induced ion migration inside the ETL and improves the operating stability of photodetectors by 50× compared to TBAI.
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Affiliation(s)
- Yangning Zhang
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
| | - Maral Vafaie
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
| | - Jian Xu
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
| | - Joao M Pina
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
| | - Pan Xia
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
| | - Amin M Najarian
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
| | - Ozan Atan
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
| | - Muhammad Imran
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
| | - Ke Xie
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
| | - Sjoerd Hoogland
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
| | - Edward H Sargent
- Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, M5S 3G4, Canada
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19
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Jin P, Tang Y, Xu X, Ran P, Wang Y, Tian Y, Huang Y, Zhu B, Yang YM. Solution-Processed Perovskite/Metal-Oxide Hybrid X-Ray Detector and Array with Decoupled Electronic and Ionic Transport Pathways. SMALL METHODS 2022; 6:e2200500. [PMID: 35754169 DOI: 10.1002/smtd.202200500] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/26/2022] [Indexed: 06/15/2023]
Abstract
Lead halide perovskites possess heavy elements and excellent mobility-lifetime (µτ) product, becoming desirable candidates for X-ray detectors. However, current perovskite photoconduction detectors (PCDs) with vertical geometry, where electronic signals and mobile ions share the same conduction path, are facing with extremely challenging ion-migration issue. Herein, a hybrid X-ray detector device structure, in which perovskite is vertically stacked onto an indium oxide (In2 O3 ) transistor with lateral transport geometry is designed, perovskite mainly acts as X-ray sensitizer to activate In2 O3 conduction channel, the actual electrical signal is conducted and collected in the lateral metal-oxide device. With the decoupled ionic and electronic transportation, hybrid detectors are insensitive to the ionic motion of perovskite, hence demonstrating no hysteresis and almost no shifting of baseline that are often observed in PCDs, hybrid detectors also exhibit reduced dark current, improved response time, and four times higher photocurrent signals. Finally, array integration of hybrid detectors and preliminary X-ray imaging is realized. The work provides an effective device strategy in addition to the mere material alternations to attain high-performance perovskite-based X-ray detectors and arrays.
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Affiliation(s)
- Peng Jin
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310007, China
| | - Yingjie Tang
- Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, Zhejiang, 310024, China
- Zhejiang University, Hangzhou, Zhejiang, 310007, China
| | - Xuehui Xu
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310007, China
| | - Peng Ran
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310007, China
| | - Yan Wang
- Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, Zhejiang, 310024, China
- Zhejiang University, Hangzhou, Zhejiang, 310007, China
| | - Yue Tian
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310007, China
| | - Yong Huang
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310007, China
- Science and Technology Industrial Park, Xidian Wuhu Research Institute, Wuhu, 241002, China
| | - Bowen Zhu
- Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province, School of Engineering, Westlake University, Hangzhou, Zhejiang, 310024, China
| | - Yang Michael Yang
- State Key Laboratory of Modern Optical Instrumentation, College of Optical Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, 310007, China
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20
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Almora O, Matt GJ, These A, Kanak A, Levchuk I, Shrestha S, Osvet A, Brabec CJ, Garcia-Belmonte G. Surface versus Bulk Currents and Ionic Space-Charge Effects in CsPbBr 3 Single Crystals. J Phys Chem Lett 2022; 13:3824-3830. [PMID: 35466679 PMCID: PMC9082610 DOI: 10.1021/acs.jpclett.2c00804] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 04/11/2022] [Indexed: 06/01/2023]
Abstract
CsPbBr3 single crystals have potential for application in ionizing-radiation detection devices due to their optimal optoelectronic properties. Yet, their mixed ionic-electronic conductivity produces instability and hysteretic artifacts hindering the long-term device operation. Herein, we report an electrical characterization of CsPbBr3 single crystals operating up to the time scale of hours. Our fast time-of-flight measurements reveal bulk mobilities of 13-26 cm2 V-1 s-1 with a negative voltage bias dependency. By means of a guard ring (GR) configuration, we separate bulk and surface mobilities showing significant qualitative and quantitative transport differences. Our experiments of current transients and impedance spectroscopy indicate the formation of several regimes of space-charge-limited current (SCLC) associated with mechanisms similar to the Poole-Frenkel ionized-trap-assisted transport. We show that the ionic-SCLC seems to be an operational mode in this lead halide perovskite, despite the fact that experiments can be designed where the contribution of mobile ions to transport is negligible.
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Affiliation(s)
- Osbel Almora
- Institute
of Advanced Materials (INAM), Universitat
Jaume I, 12006 Castelló, Spain
- Erlangen
Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander Universität Erlangen-Nürnberg, 91052 Erlangen, Germany
| | - Gebhard J. Matt
- Institute
of Materials for Electronics and Energy technologies (i-MEET), Friedrich-Alexander Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Albert These
- Institute
of Materials for Electronics and Energy technologies (i-MEET), Friedrich-Alexander Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
- Erlangen
Graduate School in Advanced Optical Technologies (SAOT), Friedrich-Alexander Universität Erlangen-Nürnberg, 91052 Erlangen, Germany
| | - Andrii Kanak
- Department
of General Chemistry and Chemistry of Materials, Yuriy Fedkovych Chernivtsi National University, 2, Kotsyubynsky St., 58012 Chernivtsi, Ukraine
| | - Ievgen Levchuk
- Institute
of Materials for Electronics and Energy technologies (i-MEET), Friedrich-Alexander Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Shreetu Shrestha
- Institute
of Materials for Electronics and Energy technologies (i-MEET), Friedrich-Alexander Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Andres Osvet
- Institute
of Materials for Electronics and Energy technologies (i-MEET), Friedrich-Alexander Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
| | - Christoph J. Brabec
- Institute
of Materials for Electronics and Energy technologies (i-MEET), Friedrich-Alexander Universität Erlangen-Nürnberg, 91058 Erlangen, Germany
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21
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Shen W, Wu Z, Yang G, Kong Y, Li W, Liang G, Huang F, Cheng YB, Zhong J. Differentiated Functions of Potassium Interface Passivation and Doping on Charge-Carrier Dynamics in Perovskite Solar Cells. J Phys Chem Lett 2022; 13:3188-3196. [PMID: 35377654 DOI: 10.1021/acs.jpclett.2c00626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The inclusion of potassium in perovskite solar cells (PSCs) has been widely demonstrated to enhance the power conversion efficiency and eliminate the hysteresis effect. However, the effects of the locations K+ cations on the charge-carrier dynamics remain unknown with respect to achieving a more delicate passivation design for perovskite interfaces and bulk films. Herein, we employ the combined electrical and ultrafast dynamics analysis for the perovskite film to distinguish the effects of bulk doping and interfacial passivation of the potassium cation. Transient absorption spectroscopy indicates an enhancement of charge-carrier diffusion for K+-doped PSCs (from 808 to 605 ps), and charge-carrier transfer is significantly promoted by K+ interface passivation (from 12.34 to 1.23 ps) compared with that of the pristine sample. Importantly, K+ doping can suppress the formation of wide bandgap perovskite phases (e.g., FAPbI0.6Br2.4 and FAPbI1.05Br1.95) that generate an energy barrier on the charge-carrier transport channel.
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Affiliation(s)
- Wenjian Shen
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Research Centre for Advanced Thin Film Photovoltaics, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Zhengli Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Research Centre for Advanced Thin Film Photovoltaics, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Gaoyuan Yang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang, Hubei 441053, China
| | - Yingjie Kong
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Research Centre for Advanced Thin Film Photovoltaics, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Wangnan Li
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang, Hubei 441053, China
| | - Guijie Liang
- Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Hubei University of Arts and Science, Xiangyang, Hubei 441053, China
| | - Fuzhi Huang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Research Centre for Advanced Thin Film Photovoltaics, Wuhan University of Technology, Wuhan 430070, P. R. China
- Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Foshan 528216, Guangdong, P. R. China
| | - Yi-Bing Cheng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Research Centre for Advanced Thin Film Photovoltaics, Wuhan University of Technology, Wuhan 430070, P. R. China
- Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Foshan 528216, Guangdong, P. R. China
| | - Jie Zhong
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Research Centre for Advanced Thin Film Photovoltaics, Wuhan University of Technology, Wuhan 430070, P. R. China
- Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory, Foshan 528216, Guangdong, P. R. China
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22
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Abstract
A multitude of chemical, biological, and material systems present an inductive behavior that is not electromagnetic in origin. Here, it is termed a chemical inductor. We show that the structure of the chemical inductor consists of a two-dimensional system that couples a fast conduction mode and a slowing down element. Therefore, it is generally defined in dynamical terms rather than by a specific physicochemical mechanism. The chemical inductor produces many familiar features in electrochemical reactions, including catalytic, electrodeposition, and corrosion reactions in batteries and fuel cells, and in solid-state semiconductor devices such as solar cells, organic light-emitting diodes, and memristors. It generates the widespread phenomenon of negative capacitance, it causes negative spikes in voltage transient measurements, and it creates inverted hysteresis effects in current-voltage curves and cyclic voltammetry. Furthermore, it determines stability, bifurcations, and chaotic properties associated to self-sustained oscillations in biological neurons and electrochemical systems. As these properties emerge in different types of measurement techniques such as impedance spectroscopy and time-transient decays, the chemical inductor becomes a useful framework for the interpretation of the electrical, optoelectronic, and electrochemical responses in a wide variety of systems. In the paper, we describe the general dynamical structure of the chemical inductor and we comment on a broad range of examples from different research areas.
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Affiliation(s)
- Juan Bisquert
- Institute of Advanced Materials (INAM), Universitat Jaume I, Castelló 12006, Spain
- Yonsei Frontier Lab, Yonsei University, Seoul 03722, South Korea
| | - Antonio Guerrero
- Institute of Advanced Materials (INAM), Universitat Jaume I, Castelló 12006, Spain
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23
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Zheng X, Ming W, Liu P, Zhang J, Zhou H, Chen M, Li W, Huang B, Wang H, Yang C. Ionic migration induced loss analysis of perovskite solar cells: a poling study. Phys Chem Chem Phys 2022; 24:7805-7814. [PMID: 35297453 DOI: 10.1039/d1cp05450c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Understanding the interplay between ionic migration and defect trapping in photovoltaic perovskites is critical to develop targeted passivation techniques for performance enhancement. In this study, systematic poling experiments on Cs0.05(FA0.85MA0.15)0.95Pb(I0.85Br0.15)3 perovskite solar cells (PSCs) were conducted to resolve the principal effects of bias dependent pretreatment effects due to dynamic ionic migration. We find that under negative polarizations, iodine ion accumulation at perovskite/electron transport layer (ETL) interfaces causes enhanced global non-radiative recombination in PSCs and significant open-circuit voltage (Voc) losses. On the other hand, dramatic short-circuit current (Jsc) reduction occurs in positively polarized devices, which is ascribed to ineffective charge collection due to modified band-bending towards both charge transport materials. Spatiotemporally scanning probe microscopy on the surface of polarized perovskites provides an in situ estimation of iodine diffusion mobility and visualization of reorganizations under an external bias. Moreover, our findings suggest that the precondition effect of PSCs under operation due to defect ions is recoverable, therefore achieving a respectable lifetime of PSCs for commercialization is promising.
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Affiliation(s)
- Xue Zheng
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
| | - Wenjie Ming
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
- Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, and School of Materials Science and Engineering, Xiangtan University, Xiangtan, Hunan, 411105, China
| | - Pingping Liu
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
| | - Jie Zhang
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
| | - Hongfei Zhou
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
| | - Ming Chen
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
| | - Weimin Li
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
| | - Boyuan Huang
- Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China
| | - Huan Wang
- School of Electrical Engineering and Automation, Hefei University of Technology, Hefei, 230009, China
| | - Chunlei Yang
- Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China.
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24
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Taukeer Khan M, Khan F, Al-Ahmed A, Ahmad S, Al-Sulaiman F. Evaluating the Capacitive Response in Metal Halide Perovskite Solar Cells. CHEM REC 2022; 22:e202100330. [PMID: 35199444 DOI: 10.1002/tcr.202100330] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/26/2022] [Accepted: 02/03/2022] [Indexed: 11/11/2022]
Abstract
The perovskites solar cells (PSCs) is composed of multifaceted device architecture and involve complex charge extraction (both electronic and ionic), this makes the task demanding to unlock the origin of the different physical process that occurs in a PSC. The capacitance in PSCs depends on several external perturbations including frequency, illumination, temperature, applied bias, and importantly on the interface modification of perovskites/charge selective contact. Arguably, different features including interfacial and bulk; ionic, and electronic charge transport in PSCs occur at different time scales. Capacitance spectroscopy is a prevailing technique to unravel the various physical phenomenon that occurs in a PSC at different time scales. A deeper knowledge of the capacitive response of a PSCs is essential to understand the charge carrier kinetics and unlock the device physics. This work highlights the capacitive response of PSCs and its application to unlock the device physics which is essential for the further optimization and improvement of the device performance.
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Affiliation(s)
- Mohd Taukeer Khan
- Department of Physics, Faculty of Science, Islamic University of Madinah, Al Jamiah, Madinah, 42351, Saudi Arabia
| | - Firoz Khan
- Interdisciplinary Research Center for Renewable Energy and Power Systems (IRC-REPS), Research Institute, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - Amir Al-Ahmed
- Interdisciplinary Research Center for Renewable Energy and Power Systems (IRC-REPS), Research Institute, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
| | - Shahzada Ahmad
- BCMaterials, Basque Center for Materials, Applications and Nanostructures, Bld. Martina Casiano, UPV/EHU Science Park, Barrio Sarriena s/n, 48940, Leioa, Spain.,IKERBASQUE, Basque Foundation for Science, Bilbao, 48009, Spain
| | - Fahad Al-Sulaiman
- Interdisciplinary Research Center for Renewable Energy and Power Systems (IRC-REPS), Research Institute, King Fahd University of Petroleum & Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
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25
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Zhong H, Li W, Huang Y, Cao D, Zhang C, Bao H, Guo Z, Wan L, Zhang X, Zhang X, Li Y, Ren X, Wang X, Eder D, Wang K, Liu SF, Wang S. All-Inorganic Perovskite Solar Cells with Tetrabutylammonium Acetate as the Buffer Layer between the SnO 2 Electron Transport Film and CsPbI 3. ACS APPLIED MATERIALS & INTERFACES 2022; 14:5183-5193. [PMID: 35073689 DOI: 10.1021/acsami.1c18375] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
All-inorganic CsPbI3 perovskites have great potential in tandem cells in combination with other photovoltaic devices. However, CsPbI3 perovskite solar cells (PSCs) still face a huge challenge, resulting in a low power conversion efficiency (PCE) relative to organic-inorganic PSCs. In this work, we introduced tetrabutylammonium acetate (TBAAc) as a buffer layer between the SnO2 electron-transport layer (ETL) and CsPbI3 all-inorganic perovskite film interface for the first time. TBAAc not only improved the conductivity of SnO2 ETL but also formed a 1D TBAPbI3 layer between the SnO2 ETL and the 3D CsPbI3 all-inorganic perovskite film, thereby enhancing the stability and passivating the surface defects of the CsPbI3 perovskite to fabricate high-efficiency carbon-counter electrode (CE)-based CsPbI3 solar cells. We fabricated carbon-CE-based hole-transporting layer ( HTL)-free PSCs with an FTO/SnO2/TBAAc/CsPbI3/C structure. The open-circuit voltage (Voc), short circuit current density (Jsc), PCE, and fill factor of the champion CsPbI3 PSCs simultaneously enhanced to 1.08 V, 17.48 mA/cm2, 12.79, and 67.8%, respectively. This PCE is currently one of the high efficiencies reported for the above planar-structured carbon-CE-based CsPbI3 PSCs to date. Moreover, the optimized device exhibits excellent stability, which retained over 83% of its initial PCE after 350 h. This work provides a facile way of simultaneous optimization of the SnO2 ETL and the CsPbI3 perovskite layer to fabricate stable and high-efficiency carbon-CE-based CsPbI3 PSCs.
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Affiliation(s)
- Hang Zhong
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China
| | - Wenbo Li
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China
| | - Yin Huang
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China
| | - Duoling Cao
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China
| | - Congqiang Zhang
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China
| | - Huaxi Bao
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China
| | - Zhiguang Guo
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China
| | - Li Wan
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China
| | - Xu Zhang
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China
| | - Xiuhua Zhang
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China
| | - Yuebin Li
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China
| | - Xiaoming Ren
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China
| | - Xianbao Wang
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China
| | - Dominik Eder
- Institute of Materials Chemistry, Technische Universität Wien, Getreidemarkt 9/165, Vienna 1060, Austria
| | - Kai Wang
- Dalian National Laboratory for Clean Energy, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
| | - Shengzhong Frank Liu
- Dalian National Laboratory for Clean Energy, iChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
| | - Shimin Wang
- Key Laboratory for the Green Preparation and Application of Functional Materials, Ministry of Education, Hubei Key Laboratory of Polymer Materials, Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Faculty of Materials Science and Engineering, Hubei University, Wuhan 430062, PR China
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26
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Effects of the PbBr 2:PbI 2 Molar Ratio on the Formation of Lead Halide Thin Films, and the Ratio's Application for High Performance and Wide Bandgap Solar Cells. MATERIALS 2022; 15:ma15030837. [PMID: 35160782 PMCID: PMC8837168 DOI: 10.3390/ma15030837] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 01/12/2022] [Accepted: 01/18/2022] [Indexed: 01/25/2023]
Abstract
We investigate the effects of the molar ratio (x) of PbBr2 on the phases, microstructure, surface morphology, optical properties, and structural defects of mixed lead halides PbI2(1−x)Br2x for use in solar cell devices. Results indicate that as x increased to 0.3, the surface morphology continued to improve, accompanied by the growth of PbI2 grains. This resulted in lead halide films with a very smooth and continuous morphology, including large grains when the film was formed at x = 0.3. In addition, the microstructure changed from (001)-oriented pure PbI2 to a highly (001)-oriented β (PbI2-rich) phase. The plausible mechanism for the enhanced morphology of the lead halide films by the addition of PbBr2 is proposed based on the growth of a Br-saturated lead iodide solid solution. Furthermore, iodine vacancies, identified by X-ray photoelectron spectroscopy, decreased as the ratio of PbBr2 increased. Finally, an electrical analysis of the solar cells was performed by using a PN heterojunction model, revealing that structural defects, such as iodine vacancies and grain boundaries, are the main contributors to the degradation of the performance of pure PbI2-based solar cells (including high leakage, low stability, and high hysteresis), which was significantly improved by the addition of PbBr2. The solar cell fabricated at x = 0.3 in air showed excellent stability and performance. The device lost merely 20% of the initial efficiency of 4.11% after 1500 h without encapsulation. This may be due to the dense microstructure and the reduced structural defects of lead halides formed at x = 0.3.
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27
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Fu Y, Zhang D, Zhan H, Zhao C, Cheng Y, Qin C, Wang L. Engineering of Annealing and Surface Passivation toward Efficient and Stable Quasi-2D Perovskite Light-Emitting Diodes. J Phys Chem Lett 2021; 12:11645-11651. [PMID: 34822249 DOI: 10.1021/acs.jpclett.1c03413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Solution-processed quasi-two-dimensional (quasi-2D) perovskites with self-assembled multiple quantum well (QW) structures exhibit enhanced exciton binding energy, which is ideal for use as light emitters. Here, we have found that postannealing is important to promoting the QWs' composition transfer, and we explored the correlation among the annealing time, the external quantum efficiency (EQE), and the operational stability of the device. During thermal annealing, the low-n QWs will gradually convert to high-n phases, accompanied by an increase in grain size. The EQE and working stability of the device exhibit different annealing-time dependences; that is, with the extension of the annealing time, the EQE gradually decreases while the working stability improves. By introducing trimethylolpropane trimethacrylate (TPTA) to passivate the emitting-region defects, the annealing-time dependence of the EQE was effectively eliminated due to the reduction of the nonradiative recombination rate, wherefore high efficiency and stability can be achieved simultaneously. Our research provides an effective way to develop highly efficiency and stable perovskite light-emitting diodes.
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Affiliation(s)
- Yunxing Fu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Dezhong Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Hongmei Zhan
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Chenyang Zhao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Yanxiang Cheng
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
| | - Chuanjiang Qin
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
- School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
| | - Lixiang Wang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
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28
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Guerrero A, Bisquert J, Garcia-Belmonte G. Impedance Spectroscopy of Metal Halide Perovskite Solar Cells from the Perspective of Equivalent Circuits. Chem Rev 2021; 121:14430-14484. [PMID: 34845904 DOI: 10.1021/acs.chemrev.1c00214] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Impedance spectroscopy (IS) provides a detailed understanding of the dynamic phenomena underlying the operation of photovoltaic and optoelectronic devices. Here we provide a broad summary of the application of IS to metal halide perovskite materials, solar cells, electrooptic and memory devices. IS has been widely used to characterize perovskite solar cells, but the variability of samples and the presence of coupled ionic-electronic effects form a complex problem that has not been fully solved yet. We summarize the understanding that has been obtained so far, the basic methods and models, as well as the challenging points still present in this research field. Our approach emphasizes the importance of the equivalent circuit for monitoring the parameters that describe the response and providing a physical interpretation. We discuss the possibilities of models from the general perspective of solar cell behavior, and we describe the specific aspects and properties of the metal halide perovskites. We analyze the impact of the ionic effects and the memory effects, and we describe the combination of light-modulated techniques such as intensity modulated photocurrent spectroscopy (IMPS) for obtaining more detailed information in complex cases. The transformation of the frequency to time domain is discussed for the consistent interpretation of time transient techniques and the prediction of features of current-voltage hysteresis. We discuss in detail the stability issues and the occurrence of transformations of the sample coupled to the measurements.
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Affiliation(s)
- Antonio Guerrero
- Institute of Advanced Materials (INAM), Universitat Jaume I, 12006 Castelló, Spain
| | - Juan Bisquert
- Institute of Advanced Materials (INAM), Universitat Jaume I, 12006 Castelló, Spain.,Yonsei Frontier Lab, Yonsei University, Seoul 03722, South Korea
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29
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Kim M, Jun H, Lee H, Nahdi H, Tondelier D, Bonnassieux Y, Bourée J, Geffroy B. Halide Ion Migration and its Role at the Interfaces in Perovskite Solar Cells. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100654] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Minjin Kim
- LPICM, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris Route de Saclay 91128 Palaiseau France
| | - Haeyeon Jun
- LPICM, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris Route de Saclay 91128 Palaiseau France
- Synchrotron SOLEIL L'Orme des Merisiers Saint-Aubin BP 48 91192 Gif-sur-Yvette Cedex France
| | - Heejae Lee
- LPICM, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris Route de Saclay 91128 Palaiseau France
| | - Hindia Nahdi
- LPICM, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris Route de Saclay 91128 Palaiseau France
- SEGULA Technologies 19 Rue d'Arras 92000 Nanterre France
| | - Denis Tondelier
- LPICM, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris Route de Saclay 91128 Palaiseau France
| | - Yvan Bonnassieux
- LPICM, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris Route de Saclay 91128 Palaiseau France
| | - Jean‐Éric Bourée
- LPICM, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris Route de Saclay 91128 Palaiseau France
| | - Bernard Geffroy
- LPICM, CNRS, Ecole Polytechnique, Institut Polytechnique de Paris Route de Saclay 91128 Palaiseau France
- Université Paris-Saclay, CEA, CNRS, NIMBE, LICSEN 91191 Gif-sur-Yvette France
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30
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Nandal V, Agarwal S, Nair PR. Deciphering the capacitance frequency technique for performance-limiting defect-state parameters in energy-harvesting perovskites. Phys Chem Chem Phys 2021; 23:24421-24427. [PMID: 34693956 DOI: 10.1039/d1cp02556b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
With emerging thin-film PIN-based optoelectronics devices, a significant research thrust is focused on the passivation of trap states for performance enhancement. Among various methods, the capacitance frequency technique (CFT) is widely employed to quantify the trap-state parameters; however, the trapped charge-induced electrostatic effect on the same is not yet established for such devices. Herein, we present a theoretical methodology to incorporate such effects in the CF characteristics of well-established, but not limited to, carrier-selective perovskite-based PIN devices. We show that the electrostatic effect of trapped charges leads to non-linear energy bands in the perovskite layer, which results in the underestimation of the trap density from existing CFT models. Consequently, a parabolic band approximation with effective length (PBAEL) model is developed to accurately predict the trap density for shallow or deep states from CFT analysis. In addition, we demonstrate that the attempt-to-escape frequency, which dictates the trapping dynamics, can be well extracted by eliminating the electrostatic effect at a reduced perovskite thickness. We believe that our work provides a unified theoretical platform for CFT to extract trap-state parameters for a broad class of organic, inorganic, and hybrid semiconductor-based thin-film devices for energy-conversion applications such as solar cells, LEDs, artificial photosynthesis, etc.
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Affiliation(s)
- Vikas Nandal
- Global Zero Emission Research Center, National Institute of Advanced Industrial Science and Technology, Tsukuba 16-1 Onogawa, Tsukuba, Ibaraki 305-8569, Japan. .,Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai-400076, Maharashtra, India.
| | - Sumanshu Agarwal
- Department of Electronics and Communication Engineering, Institute of Technical Education and Research, Siksha 'O' Anusandhan (Deemed to be) University, Bhubaneswar, Odisha-751030, India.
| | - Pradeep R Nair
- Department of Electrical Engineering, Indian Institute of Technology Bombay, Mumbai-400076, Maharashtra, India.
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31
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Xu X, Qian W, Wang J, Yang J, Chen J, Xiao S, Ge Y, Yang S. Sequential Growth of 2D/3D Double-Layer Perovskite Films with Superior X-Ray Detection Performance. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2102730. [PMID: 34495577 PMCID: PMC8564448 DOI: 10.1002/advs.202102730] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Indexed: 05/30/2023]
Abstract
Perovskite materials in different dimensions show great potential in direct X-ray detection, but each with limitations stemming from its own intrinsic properties. Particularly, the sensitivity of two-dimensional (2D) perovskites is limited by poor carrier transport while ion migration in three-dimensional (3D) perovskites causes the baseline drifting problem. To circumvent these limitations, herein a double-layer perovskite film is developed with properly aligned energy level, where 2D (PEA)2 MA3 Pb4 I13 (PEA=2-phenylethylammonium, MA=methylammonium) is cascaded with vertically crystallized 3D MAPbI3 . In this new design paradigm, the 3D layer ensures fast carrier transport while the 2D layer mitigates ion migration, thus offering a high sensitivity and a greatly stabilized baseline. Besides, the 2D layer increases the film resistivity and enlarges the energy barrier for hole injection without compromising carrier extraction. Consequently, the double-layer perovskite detector delivers a high sensitivity (1.95 × 104 μC Gyair -1 cm-2 ) and a low detection limit (480 nGyair s-1 ). Also demonstrated is the X-ray imaging capacity using a circuit board as the object. This work opens up a new avenue for enhancing X-ray detection performance via cascade assembly of various perovskites with complementary properties.
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Affiliation(s)
- Xiuwen Xu
- Guangdong Key Lab of Nano‐Micro Material ResearchSchool of Chemical Biology and BiotechnologyShenzhen Graduate SchoolPeking UniversityShenzhen518055China
| | - Wei Qian
- Guangdong Key Lab of Nano‐Micro Material ResearchSchool of Chemical Biology and BiotechnologyShenzhen Graduate SchoolPeking UniversityShenzhen518055China
| | - Jian Wang
- Guangdong Key Lab of Nano‐Micro Material ResearchSchool of Chemical Biology and BiotechnologyShenzhen Graduate SchoolPeking UniversityShenzhen518055China
- Institute of Biomedical EngineeringShenzhen Bay LaboratoryShenzhen518055China
| | - Jiecheng Yang
- Research Center for Medical Artificial IntelligenceShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
- Paul C. Lauterbur Research Center for Biomedical ImagingShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
| | - Jianwei Chen
- Research Center for Medical Artificial IntelligenceShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
- Paul C. Lauterbur Research Center for Biomedical ImagingShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
| | - Shuang Xiao
- Guangdong Key Lab of Nano‐Micro Material ResearchSchool of Chemical Biology and BiotechnologyShenzhen Graduate SchoolPeking UniversityShenzhen518055China
| | - Yongshuai Ge
- Research Center for Medical Artificial IntelligenceShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
- Paul C. Lauterbur Research Center for Biomedical ImagingShenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen518055China
| | - Shihe Yang
- Guangdong Key Lab of Nano‐Micro Material ResearchSchool of Chemical Biology and BiotechnologyShenzhen Graduate SchoolPeking UniversityShenzhen518055China
- Institute of Biomedical EngineeringShenzhen Bay LaboratoryShenzhen518055China
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Kwak KJ, Lee DE, Kim SJ, Jang HW. Halide Perovskites for Memristive Data Storage and Artificial Synapses. J Phys Chem Lett 2021; 12:8999-9010. [PMID: 34515487 DOI: 10.1021/acs.jpclett.1c02332] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Halide perovskites have been noted for their exotic properties such as fast ion migration, tunable composition, facile synthetic routes, and flexibility in addition to large light absorption coefficients, long carrier diffusion lengths, and high defect tolerance. These properties have made halide perovskites promising materials for memristors. Applications in the field of resistive switching memory devices and artificial synapses for neuromorphic computing are especially noteworthy. This Perspective covers state-of-the-art perovskite-based memristive devices. Moreover, the fundamental mechanisms and characteristics of perovskite-based memristors are elucidated. Interesting opportunities to improve the performance of perovskite-based memristors for commercialization are provided, including improving film uniformity and air stability, controlling the stoichiometry, finding new all-inorganic and lead-free halide perovskites, and making perovskites into single crystals or quantum dots. We expect our Perspective to be the foundation of realizing next-generation halide perovskite-based memristors.
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Affiliation(s)
- Kyung Ju Kwak
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Da Eun Lee
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Seung Ju Kim
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
| | - Ho Won Jang
- Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, Seoul 08826, Republic of Korea
- Advanced Institute of Convergence Technology, Seoul National University, Suwon 16229, Republic of Korea
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Exploring the Effect of Ammonium Iodide Salts Employed in Multication Perovskite Solar Cells with a Carbon Electrode. Molecules 2021; 26:molecules26195737. [PMID: 34641280 PMCID: PMC8510273 DOI: 10.3390/molecules26195737] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 09/14/2021] [Accepted: 09/17/2021] [Indexed: 11/26/2022] Open
Abstract
Perovskite solar cells that use carbon (C) as a replacement of the typical metal electrodes, which are most commonly employed, have received growing interest over the past years, owing to their low cost, ease of fabrication and high stability under ambient conditions. Even though Power Conversion Efficiencies (PCEs) have increased over the years, there is still room for improvement, in order to compete with metal-based devices, which exceed 25% efficiency. With the scope of increasing the PCE of Carbon based Perovskite Solar Cells (C-PSCs), in this work we have employed a series of ammonium iodides (ammonium iodide, ethylammonium iodide, tetrabutyl ammonium iodide, phenethylammonium iodide and 5-ammonium valeric acid iodide) as additives in the multiple cation-mixed halide perovskite precursor solution. This has led to a significant increase in the PCE of the corresponding devices, by having a positive impact on the photocurrent values obtained, which exhibited an increase exceeding 20%, from 19.8 mA/cm2, for the reference perovskite, to 24 mA/cm2, for the additive-based perovskite. At the same time, the ammonium iodide salts were used in a post-treatment method. By passivating the defects, which provide charge recombination centers, an improved performance of the C-PSCs has been achieved, with enhanced FF values reaching 59%, which is a promising result for C-PSCs, and Voc values up to 850 mV. By combining the results of these parallel investigations, C-PSCs of the triple mesoscopic structure with a PCE exceeding 10% have been achieved, while the in-depth investigation of the effects of ammonium iodides in this PSC structure provide a fruitful insight towards the optimum exploitation of interface and bulk engineering, for high efficiency and stable C-PSCs, with a structure that is favorable for large area applications.
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Zhang X, Zhao D, Liu X, Bai R, Ma X, Fu M, Zhang BB, Zha G. Ferroelastic Domains Enhanced the Photoelectric Response in a CsPbBr 3 Single-Crystal Film Detector. J Phys Chem Lett 2021; 12:8685-8691. [PMID: 34472875 DOI: 10.1021/acs.jpclett.1c02606] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The ferroic domain, in metal halide perovskites (MHPs) at a low symmetry phase, was reported to affect optoelectronic properties. Building the relationship between ferroic domains and optoelectronic properties of MHPs will be a non-trivial task for understanding the charge transport mechanism. Here, high-quality CsPbBr3 single-crystal films (SCFs) were successfully grown by a cast-capping method. Through the phase transition process by heating and cooling the sample, dense domains in CsPbBr3 SCFs were formed and observed by an in situ polarized optical microscope. These domains were identified as 90° rotation twins by electron backscattered diffraction and transmission electron microscopy. Interestingly, the photocurrent response was dramatically enhanced after introducing ferroelastic domains. The highest responsivity, external quantum efficiency, and detectivity are 380 mA/W, 130%, and 12.9 × 1010 Jones, respectively, which are surprisingly 25.03, 25, and 7.8 times higher than those of the as-grown CsPbBr3 SCF, respectively, which may be attributed to the function of the domain wall of separating electrons and holes.
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Affiliation(s)
- Xinlei Zhang
- State Key Laboratory of Solidification Processing and Key Laboratory of Radiation Detection Materials and Devices, Ministry of Industry and Information Technology & School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China
| | - Dou Zhao
- State Key Laboratory of Solidification Processing and Key Laboratory of Radiation Detection Materials and Devices, Ministry of Industry and Information Technology & School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China
| | - Xin Liu
- State Key Laboratory of Solidification Processing and Key Laboratory of Radiation Detection Materials and Devices, Ministry of Industry and Information Technology & School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China
| | - Ruichen Bai
- State Key Laboratory of Solidification Processing and Key Laboratory of Radiation Detection Materials and Devices, Ministry of Industry and Information Technology & School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China
| | - Xiao Ma
- State Key Laboratory of Solidification Processing and Shaanxi Materials Analysis and Research Center & School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China
| | - Maosen Fu
- State Key Laboratory of Solidification Processing and Key Laboratory of Radiation Detection Materials and Devices, Ministry of Industry and Information Technology & School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China
- State Key Laboratory of Solidification Processing and Shaanxi Materials Analysis and Research Center & School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China
| | - Bin-Bin Zhang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 200031, People's Republic of China
| | - Gangqiang Zha
- State Key Laboratory of Solidification Processing and Key Laboratory of Radiation Detection Materials and Devices, Ministry of Industry and Information Technology & School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, People's Republic of China
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Castro-Chong A, Riquelme AJ, Aernouts T, Bennett LJ, Richardson G, Oskam G, Anta JA. Illumination Intensity Dependence of the Recombination Mechanism in Mixed Perovskite Solar Cells. Chempluschem 2021; 86:1347-1356. [PMID: 34553834 DOI: 10.1002/cplu.202100233] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2021] [Revised: 08/30/2021] [Indexed: 11/09/2022]
Abstract
Recombination mechanisms in solar cells are frequently assessed through the determination of ideality factors. In this work we report an abrupt change of the value of the "apparent" ideality factor (nAP ) in high-efficiency FA0.71 MA0.29 PbI2.9 Br0.1 based mesoscopic perovskite solar cells as a function of light intensity. This change is manifested as a transition from a regime characterized by nAP ∼1.8-2.5 at low light intensities (<10 mWcm-2 ) to one characterized by nAP ∼1. This transition is equally observed in the recombination resistance extracted from open-circuit impedance measurements. We use drift-diffusion simulations with explicit consideration of ion migration to determine the origin of this transition. We find that a change ofrecombination mechanism concurrent with a modification of the concentration of ionic vacancies is the most likely explanation of the observed behaviour. In the drift-diffusion simulations we show that the apparent ideality factor is in fact affected by the ion vacancy concentration so it is not the optimal parameter to assess the dominant recombination mechanism. We argue that a procedure based on a recently derived "electronic" ideality factor obtained from the high frequency feature of the impedance spectrum is better suited to determine the recombination route that dictates the photovoltage.
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Affiliation(s)
- Alejandra Castro-Chong
- Department of Applied Physics, CINVESTAV-IPN, Antigua Carretera a Progreso km 6, Mérida, Yucatán, 97310, México
| | - Antonio J Riquelme
- Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, Carretera de Utrera km 1, Sevilla, 41013, Spain
| | - Tom Aernouts
- Thin-Film Photovoltaics - partner in EnergyVille and Solliance, imec, Thor Park 8320, 3600, Genk, Belgium
| | - Laurence J Bennett
- Mathematical Sciences, University of Southampton, Southampton, SO17 1BJ, UK
| | - Giles Richardson
- Mathematical Sciences, University of Southampton, Southampton, SO17 1BJ, UK
| | - Gerko Oskam
- Department of Applied Physics, CINVESTAV-IPN, Antigua Carretera a Progreso km 6, Mérida, Yucatán, 97310, México
- Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, Carretera de Utrera km 1, Sevilla, 41013, Spain
| | - Juan A Anta
- Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, Carretera de Utrera km 1, Sevilla, 41013, Spain
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Wali Q, Aamir M, Ullah A, Iftikhar FJ, Khan ME, Akhtar J, Yang S. Fundamentals of Hysteresis in Perovskite Solar Cells: From Structure-Property Relationship to Neoteric Breakthroughs. CHEM REC 2021; 22:e202100150. [PMID: 34418290 DOI: 10.1002/tcr.202100150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2021] [Revised: 07/07/2021] [Accepted: 08/04/2021] [Indexed: 11/08/2022]
Abstract
Perovskite solar cells (PSC) have shown a rapid increase in efficiency than other photovoltaic technology. Despite its success in terms of efficiency, this technology is inundated with numerous challenges hindering the progress towards commercial viability. The crucial one is the anomalous hysteresis observed in the photocurrent density-voltage (J-V) response in PSC. The hysteresis phenomenon in the solar cell presents a challenge for determining the accurate power conversion efficiency of the device. A detailed investigation of the fundamental origin of hysteresis behavior in the device and its associated mechanisms is highly crucial. Though numerous theories have been proposed to explain the causes of hysteresis, its origin includes slow transient capacitive current, trapping, and de-trapping process, ion migrations, and ferroelectric polarization. The remaining issues and future research required toward the understanding of hysteresis in PSC device is also discussed.
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Affiliation(s)
- Qamar Wali
- School of Applied Sciences and Humanities, National University of Technology, I-12, Islamabad, 42000, Pakistan
| | - Muhammad Aamir
- Materials Laboratory, Department of Chemistry, Mirpur University of Science and Technology (MUST), Mirpur, 10250 (AJK), Pakistan
| | - Abid Ullah
- Material laboratory, Department of Physics, Comsats Institute of information technology, Islamabad, Pakistan
| | - Faiza Jan Iftikhar
- School of Applied Sciences and Humanities, National University of Technology, I-12, Islamabad, 42000, Pakistan
| | - Muhammad Ejaz Khan
- Department of Computer Engineering, National University of Technology, I-12, Islamabad, 42000, Pakistan
| | - Javeed Akhtar
- Materials Laboratory, Department of Chemistry, Mirpur University of Science and Technology (MUST), Mirpur, 10250 (AJK), Pakistan
| | - Shengyuan Yang
- State Key Laboratory for Modification of Chemical Fibres and Polymer Materials, Shanghai "Belt & Road" Joint Laboratory of Advanced Fibers and Low-dimension Materials College of Materials Science and Engineering, Donghua University, Shanghai., 201620, P.R. China
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Wu F, Pathak R, Qiao Q. Origin and alleviation of J-V hysteresis in perovskite solar cells: A short review. Catal Today 2021. [DOI: 10.1016/j.cattod.2020.12.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Tetragonal-Cubic Phase Transition and Low-Field Dielectric Properties of CH 3NH 3PbI 3 Crystals. MATERIALS 2021; 14:ma14154215. [PMID: 34361408 PMCID: PMC8348982 DOI: 10.3390/ma14154215] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 07/19/2021] [Accepted: 07/23/2021] [Indexed: 01/06/2023]
Abstract
The frequency and temperature dependence of dielectric properties of CH3NH3PbI3 (MAPI) crystals have been studied and analyzed in connection with temperature-dependent structural studies. The obtained results bring arguments for the existence of ferroelectricity and aim to complete the current knowledge on the thermally activated conduction mechanisms, in dark equilibrium and in the presence of a small external a.c. electric field. The study correlates the frequency-dispersive dielectric spectra with the conduction mechanisms and their relaxation processes, as well as with the different transport regimes indicated by the Nyquist plots. The different energy barriers revealed by the impedance spectroscopy highlight the dominant transport mechanisms in different frequency and temperature ranges, being associated with the bulk of the grains, their boundaries, and/or the electrodes' interfaces.
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Bisquert J, Guerrero A, Gonzales C. Theory of Hysteresis in Halide Perovskites by Integration of the Equivalent Circuit. ACS PHYSICAL CHEMISTRY AU 2021; 1:25-44. [PMID: 36855663 PMCID: PMC9718316 DOI: 10.1021/acsphyschemau.1c00009] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Perovskite solar cells show a number of internal electronic-ionic effects that produce hysteresis in the current-voltage curves and a dependence of the temporal response on the conditions of the previous stimulus applied to the sample. There are many models and explanations in the literature, but predictive methods that may lead to an assessment of the solar cell behavior based on independent measurements are needed. Here, we develop a method to predict time domain response starting from the frequency domain response measured by impedance spectroscopy over a collection of steady states. The rationale of the method is to convert the impedance response into a set of differential equations, in which the internal state variables emerge naturally and need not be predefined in terms of a physical (drift/diffusion/interfaces) model. Then, one solves (integrates) the evolution for a required external perturbation such as voltage sweep at a constant rate (cyclic voltammetry). Using this method, we solve two elementary but relevant equivalent circuit models for perovskite solar cells and memristors, and we show the emergence of hysteresis in terms of the relevant time and energy constants that can be fully obtained from impedance spectroscopy. We demonstrate quantitatively a central insight in agreement with many observations: regular hysteresis is capacitive, and inverted hysteresis is inductive. Analysis of several types of perovskite solar cells shows excellent correlation of the type of equivalent circuit and the observed hysteresis. A new phenomenon of transformation from capacitive to inductive hysteresis in the course of the current-voltage curve is reported.
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41
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Lin P, Meng Q, Chen H, Hu H, Fang D, Xu L, Wang P, Cui C. Variational hysteresis and photoresponse behavior of MAPb X3( X= I, Br, Cl) perovskite single crystals. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2021; 33:285703. [PMID: 33971631 DOI: 10.1088/1361-648x/abff92] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Accepted: 05/10/2021] [Indexed: 06/12/2023]
Abstract
High-quality MAPbX3(X= I, Br, Cl) single crystals with a desirable size were grown through an inverse temperature crystallization method. Systematically measurements of current-voltage (I-V) hysteresis show that the hysteresis is strongly dependent on the measuring protocol, including scan rate and light illumination condition, which reveals the competition of three main factors that influence the charge dynamics in different regimes, defect trap, MA+dipoles rotation, and ion migration. In the dark, defect trapping is the dominant charge transport dynamics at low bias in the MAPbI3, while the MA+dipole rotation is significant in MAPbBr3, and ion migration occurs in MAPbCl3. However, as bias increases, MA+dipole rotation plays a crucial role in the conductivity either in the dark or under light illumination. The time-dependent photoresponse exhibits different tendencies under various biases. The slow rising dynamics of photoresponse in MAPbX3is attributed to the slow rotation of MA+dipoles, while an immediate overshoot followed by a decay suggests significant ion migration contribution at high external bias. The results serve as comprehensive experimental support to understand the hysteresis behaviors and slow photoresponse in MAPbX3, particularly in MAPbCl3, and provide a guide for future work in MAPbX3based optoelectronic devices.
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Affiliation(s)
- Ping Lin
- Key Laboratory of Optical Field Manipulation of Zhejiang Province, Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
| | - Qingyu Meng
- Key Laboratory of Optical Field Manipulation of Zhejiang Province, Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
| | - Hang Chen
- Key Laboratory of Optical Field Manipulation of Zhejiang Province, Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
| | - Haihua Hu
- Zhejiang University City College, Hangzhou 310015, People's Republic of China
| | - Desheng Fang
- Key Laboratory of Optical Field Manipulation of Zhejiang Province, Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
| | - Lingbo Xu
- Key Laboratory of Optical Field Manipulation of Zhejiang Province, Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
- State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Peng Wang
- Key Laboratory of Optical Field Manipulation of Zhejiang Province, Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
- State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, People's Republic of China
| | - Can Cui
- Key Laboratory of Optical Field Manipulation of Zhejiang Province, Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, People's Republic of China
- State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027, People's Republic of China
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Shahiduzzaman M, Wang L, Fukaya S, Muslih EY, Kogo A, Nakano M, Karakawa M, Takahashi K, Tomita K, Nunzi JM, Miyasaka T, Taima T. Ionic Liquid-Assisted MAPbI 3 Nanoparticle-Seeded Growth for Efficient and Stable Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2021; 13:21194-21206. [PMID: 33914507 DOI: 10.1021/acsami.1c00677] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
With the rapid improvement of perovskite solar cells (PSCs), long-life operational stability has become a major requirement for their commercialization. In this work, we devised a pristine cesium-formamidinium-methylammonium (termed as CsFAMA) triple-cation-based perovskite precursor solution into the ionic liquid (IL)-assisted MAPbI3 nanoparticles (NPs) through a seeded growth approach in which the host IL-assisted MAPbI3 NPs remarkably promote high-quality perovskite films with large single-crystal domains, enhancing the device performance and stability. The power conversion efficiency (PCE) of the MAPbI3 NP-seeded growth of MAPbI3 NPs/CsFAMA-based PSCs is as high as 19.44%, which is superior to those of MAPbI3 NPs and pristine CsFAMA films as the photoactive layer (9.52 and 17.33%, respectively). The long-term light-soaking and moisture stability of IL-aided MAPbI3 NPs/CsFAMA-based devices (non-encapsulated) remain above 90 and 80%, respectively, of their initial output after 2 h of light illumination (1 sun) and 6000 h storage at ambient with a relative humidity range of 30-40%. The use of the IL-assisted MAPbI3 NP-seeded growth for PSCs is a significant step toward developing stable and reliable perovskite photovoltaic devices.
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Affiliation(s)
- Md Shahiduzzaman
- Nanomaterials Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - LiangLe Wang
- Graduate School of Frontier Science Initiative, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Shoko Fukaya
- Graduate School of Frontier Science Initiative, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Ersan Y Muslih
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Atsushi Kogo
- National Institute of Advanced Industrial Science and Technology (AIST), 1-1-1 Higashi, Tsukuba, Ibaraki 305-8565, Japan
| | - Masahiro Nakano
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Makoto Karakawa
- Nanomaterials Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- Graduate School of Frontier Science Initiative, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Kohshin Takahashi
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
| | - Koji Tomita
- Department of Chemistry, School of Science, Tokai University, Hiratsuka, Kanagawa 259-1292, Japan
| | - Jean-Michel Nunzi
- Nanomaterials Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- Department of Physics, Engineering Physics and Astronomy, Queens University, Kingston, Ontario K7L 3N6, Canada
| | - Tsutomu Miyasaka
- Graduate School of Engineering, Toin University of Yokohama, Kuroganecho, Yokohama 225-8503, Japan
| | - Tetsuya Taima
- Nanomaterials Research Institute, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- Graduate School of Frontier Science Initiative, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan
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Büttner P, Scheler F, Pointer C, Döhler D, Yokosawa T, Spiecker E, Boix PP, Young ER, Mínguez-Bacho I, Bachmann J. ZnS Ultrathin Interfacial Layers for Optimizing Carrier Management in Sb 2S 3-based Photovoltaics. ACS APPLIED MATERIALS & INTERFACES 2021; 13:11861-11868. [PMID: 33667064 PMCID: PMC7975279 DOI: 10.1021/acsami.0c21365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 02/25/2021] [Indexed: 06/12/2023]
Abstract
Antimony chalcogenides represent a family of materials of low toxicity and relative abundance, with a high potential for future sustainable solar energy conversion technology. However, solar cells based on antimony chalcogenides present open-circuit voltage losses that limit their efficiencies. These losses are attributed to several recombination mechanisms, with interfacial recombination being considered as one of the dominant processes. In this work, we exploit atomic layer deposition (ALD) to grow a series of ultrathin ZnS interfacial layers at the TiO2/Sb2S3 interface to mitigate interfacial recombination and to increase the carrier lifetime. ALD allows for very accurate control over the ZnS interlayer thickness on the ångström scale (0-1.5 nm) and to deposit highly pure Sb2S3. Our systematic study of the photovoltaic and optoelectronic properties of these devices by impedance spectroscopy and transient absorption concludes that the optimum ZnS interlayer thickness of 1.0 nm achieves the best balance between the beneficial effect of an increased recombination resistance at the interface and the deleterious barrier behavior of the wide-bandgap semiconductor ZnS. This optimization allows us to reach an overall power conversion efficiency of 5.09% in planar configuration.
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Affiliation(s)
- Pascal Büttner
- Friedrich-Alexander
University Erlangen-Nürnberg, Chemistry of Thin Film Materials, Department of Chemistry and Pharmacy,
IZNF, Cauerstraße
3, 91058 Erlangen, Germany
| | - Florian Scheler
- Friedrich-Alexander
University Erlangen-Nürnberg, Chemistry of Thin Film Materials, Department of Chemistry and Pharmacy,
IZNF, Cauerstraße
3, 91058 Erlangen, Germany
- Universidad
de Valencia, Instituto de Ciencia de Materiales, Catedrático J. Beltrán
2, 46980 Paterna, Spain
| | - Craig Pointer
- Lehigh
University, Department of Chemistry, 6 East Packer Avenue, Bethlehem, Pennsylvania 18015, United States
| | - Dirk Döhler
- Friedrich-Alexander
University Erlangen-Nürnberg, Chemistry of Thin Film Materials, Department of Chemistry and Pharmacy,
IZNF, Cauerstraße
3, 91058 Erlangen, Germany
| | - Tadahiro Yokosawa
- Friedrich-Alexander
University Erlangen-Nürnberg, Institute
of Micro- and Nanostructure Research, and Center for Nanoanalysis
and Electron Microscopy (CENEM), IZNF, Cauerstraße 3, Erlangen, 91058 Germany
| | - Erdmann Spiecker
- Friedrich-Alexander
University Erlangen-Nürnberg, Institute
of Micro- and Nanostructure Research, and Center for Nanoanalysis
and Electron Microscopy (CENEM), IZNF, Cauerstraße 3, Erlangen, 91058 Germany
| | - Pablo P. Boix
- Universidad
de Valencia, Instituto de Ciencia de Materiales, Catedrático J. Beltrán
2, 46980 Paterna, Spain
| | - Elizabeth R. Young
- Lehigh
University, Department of Chemistry, 6 East Packer Avenue, Bethlehem, Pennsylvania 18015, United States
| | - Ignacio Mínguez-Bacho
- Friedrich-Alexander
University Erlangen-Nürnberg, Chemistry of Thin Film Materials, Department of Chemistry and Pharmacy,
IZNF, Cauerstraße
3, 91058 Erlangen, Germany
| | - Julien Bachmann
- Friedrich-Alexander
University Erlangen-Nürnberg, Chemistry of Thin Film Materials, Department of Chemistry and Pharmacy,
IZNF, Cauerstraße
3, 91058 Erlangen, Germany
- Saint-Petersburg
State University, Institute of Chemistry, Universitetskii Prospekt 26, 198504 Saint Petersburg, Russia
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44
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Narayanan S, Parikh N, Tavakoli MM, Pandey M, Kumar M, Kalam A, Trivedi S, Prochowicz D, Yadav P. Metal Halide Perovskites for Energy Storage Applications. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100015] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Saranya Narayanan
- Department of Solar Energy School of Technology Pandit Deendayal Petroleum University Gandhinagar 382 007 Gujarat India
| | - Nishi Parikh
- Department of Science School of Technology Pandit Deendayal Petroleum University Gandhinagar 382 007 Gujarat India
| | - Mohammad Mahdi Tavakoli
- Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge MA 02139 USA
| | - Manoj Pandey
- Department of Science School of Technology Pandit Deendayal Petroleum University Gandhinagar 382 007 Gujarat India
| | - Manoj Kumar
- Department of Science School of Technology Pandit Deendayal Petroleum University Gandhinagar 382 007 Gujarat India
| | - Abul Kalam
- Department of Chemistry Faculty of Science King Khalid University Abha 61413, P.O. Box 9004 Saudi Arabia
| | - Suverna Trivedi
- Department of Chemical Engineering National Institute of Technology Rourkela 769008 India
| | - Daniel Prochowicz
- Institute of Physical Chemistry Polish Academy of Sciences Kasprzaka 44/52 01-224 Warsaw Poland
| | - Pankaj Yadav
- Department of Solar Energy School of Technology Pandit Deendayal Petroleum University Gandhinagar 382 007 Gujarat India
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45
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Chen W, Pham ND, Wang H, Jia B, Wen X. Spectroscopic Insight into Efficient and Stable Hole Transfer at the Perovskite/Spiro-OMeTAD Interface with Alternative Additives. ACS APPLIED MATERIALS & INTERFACES 2021; 13:5752-5761. [PMID: 33470096 DOI: 10.1021/acsami.0c19111] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
A stable and efficient carrier transfer is a prerequisite for high-performance perovskite solar cells. With optimized additives, a significantly improved charge carrier transfer can be achieved at the interface of perovskite/2,2',7,7'-tetrakis-(N,N-di-4-methoxyphenylamino)-9,90-spirobifluorene (Spiro-OMeTAD) with significantly boosted photostability. Using time-dependent spectroscopic techniques, we investigated charge carrier and mobile-ion dynamics at the perovskite/Spiro-OMeTAD interface, where the Spiro-OMeTAD contains different bis(trifluoromethanesulfonyl)imide (TFSI) salts additives (Li-TFSI, Mg-TFSI2, Ca-TFSI2). The pristine response and the dynamic changes under continuous illuminations are presented, which is correlated to the different behaviors of mobile-ion accumulations at the perovskite/Spiro interface and ascribed to the improved hole mobilities in Spiro-OMeTAD, ultimately contributing to the favorable behaviors in solar cells. It is demonstrated that the hole mobility and conductivity of hole transport layers play an important role in suppressing mobile-ion accumulation at the interfaces of solar cells. With the engineering of mixed-cation mixed-halide perovskite, optimal engineering of additives in hole transport materials is an efficient strategy. Therefore, it should be emphasized for accelerating perovskite photovoltaic commercialization.
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Affiliation(s)
- Weijian Chen
- Centre for Translational Atomaterials, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
- Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales (UNSW), Kensington, New South Wales 2052, Australia
| | - Ngoc Duy Pham
- School of Chemistry and Physics, Science and Engineering Faculty, Queensland University of Technology, Brisbane, Queensland 4001, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, Queensland 4001, Australia
| | - Hongxia Wang
- School of Chemistry and Physics, Science and Engineering Faculty, Queensland University of Technology, Brisbane, Queensland 4001, Australia
- Centre for Materials Science, Queensland University of Technology, Brisbane, Queensland 4001, Australia
| | - Baohua Jia
- Centre for Translational Atomaterials, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
| | - Xiaoming Wen
- Centre for Translational Atomaterials, Swinburne University of Technology, Hawthorn, Victoria 3122, Australia
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46
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Mixed halide perovskites for spectrally stable and high-efficiency blue light-emitting diodes. Nat Commun 2021; 12:361. [PMID: 33441549 PMCID: PMC7806600 DOI: 10.1038/s41467-020-20582-6] [Citation(s) in RCA: 124] [Impact Index Per Article: 41.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 12/09/2020] [Indexed: 12/23/2022] Open
Abstract
Bright and efficient blue emission is key to further development of metal halide perovskite light-emitting diodes. Although modifying bromide/chloride composition is straightforward to achieve blue emission, practical implementation of this strategy has been challenging due to poor colour stability and severe photoluminescence quenching. Both detrimental effects become increasingly prominent in perovskites with the high chloride content needed to produce blue emission. Here, we solve these critical challenges in mixed halide perovskites and demonstrate spectrally stable blue perovskite light-emitting diodes over a wide range of emission wavelengths from 490 to 451 nanometres. The emission colour is directly tuned by modifying the halide composition. Particularly, our blue and deep-blue light-emitting diodes based on three-dimensional perovskites show high EQE values of 11.0% and 5.5% with emission peaks at 477 and 467 nm, respectively. These achievements are enabled by a vapour-assisted crystallization technique, which largely mitigates local compositional heterogeneity and ion migration. Achieving bright and efficient blue emission in metal halide perovskite light-emitting diodes has proven to be challenging. Here, the authors demonstrate high EQE and spectrally stable blue light-emitting diodes based on mixed halide perovskites, with emission from 490 to 451 nm by using a vapour-assisted crystallization technique.
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47
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Bonomo M, Taheri B, Bonandini L, Castro-Hermosa S, Brown TM, Zanetti M, Menozzi A, Barolo C, Brunetti F. Thermosetting Polyurethane Resins as Low-Cost, Easily Scalable, and Effective Oxygen and Moisture Barriers for Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2020; 12:54862-54875. [PMID: 33237742 PMCID: PMC8016164 DOI: 10.1021/acsami.0c17652] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Long-term stability of perovskite solar cells (PSCs) is one of the main issues to be solved for forthcoming commercialization of this technology. In this work, thermosetting polyurethane (PU)-based resins are proposed as effective encapsulants for perovskite solar cells to prevent degradation caused by both moisture and oxygen. Application consists of drop-casting the precursor mixture directly over the devices followed by in situ polymerization, avoiding the use of other adhesives. PUs are cost-effective, lightweight, thermal, and light-stable materials whose mechanical, chemical, and physical properties can be easily tuned by thoughtful choice of their precursor. Encapsulated PSCs show extremely good stability when stored under ambient light (maximum, 1000 lux), controlled humidity (28-65%), and temperature (18-30 °C) by retaining 94% of the initial power conversion efficiency after 2500 h (4 months), whereas control devices lose 90% of their performance after 500 h (T80 = 37 h); once stored according to ISOS-D-1, PU-protected devices showed T80 > 1200 h. Encapsulated devices are stable even when immersed in pure water. The demonstration of PUs as promising solution-processed encapsulant materials for PSCs can pave the way for these to become a cost-effective encapsulation route alternative for future industrialization of this technology.
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Affiliation(s)
- Matteo Bonomo
- Department
of Chemistry and NIS Interdepartmental Centre, University of Turin, Via Pietro Giuria 7, 10125 Turin, Italy
| | - Babak Taheri
- CHOSE
(Centre for Hybrid and Organic Solar Energy), Department of Electronic
Engineering, University of Rome Tor Vergata, Via del Politecnico 1, 00133 Rome, Italy
| | - Luca Bonandini
- S.E.
Special Engines S.r.l., Strada del Cascinotto, 163, 10156 Torino, Italy
| | - Sergio Castro-Hermosa
- CHOSE
(Centre for Hybrid and Organic Solar Energy), Department of Electronic
Engineering, University of Rome Tor Vergata, Via del Politecnico 1, 00133 Rome, Italy
| | - Thomas M. Brown
- CHOSE
(Centre for Hybrid and Organic Solar Energy), Department of Electronic
Engineering, University of Rome Tor Vergata, Via del Politecnico 1, 00133 Rome, Italy
| | - Marco Zanetti
- Department
of Chemistry and NIS Interdepartmental Centre, University of Turin, Via Pietro Giuria 7, 10125 Turin, Italy
- ICxT
Interdepartmental Centre, Università
degli Studi di Torino, Lungo Dora Siena 100, 10153 Torino, Italy
| | - Alberto Menozzi
- S.E.
Special Engines S.r.l., Strada del Cascinotto, 163, 10156 Torino, Italy
| | - Claudia Barolo
- Department
of Chemistry and NIS Interdepartmental Centre, University of Turin, Via Pietro Giuria 7, 10125 Turin, Italy
- ICxT
Interdepartmental Centre, Università
degli Studi di Torino, Lungo Dora Siena 100, 10153 Torino, Italy
| | - Francesca Brunetti
- CHOSE
(Centre for Hybrid and Organic Solar Energy), Department of Electronic
Engineering, University of Rome Tor Vergata, Via del Politecnico 1, 00133 Rome, Italy
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48
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A universal tactic of using Lewis-base polymer-CNTs composites as additives for high performance cm2-sized and flexible perovskite solar cells. Sci China Chem 2020. [DOI: 10.1007/s11426-020-9866-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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49
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Probing the ionic defect landscape in halide perovskite solar cells. Nat Commun 2020; 11:6098. [PMID: 33257707 PMCID: PMC7705665 DOI: 10.1038/s41467-020-19769-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Accepted: 10/29/2020] [Indexed: 11/19/2022] Open
Abstract
Point defects in metal halide perovskites play a critical role in determining their properties and optoelectronic performance; however, many open questions remain unanswered. In this work, we apply impedance spectroscopy and deep-level transient spectroscopy to characterize the ionic defect landscape in methylammonium lead triiodide (MAPbI3) perovskites in which defects were purposely introduced by fractionally changing the precursor stoichiometry. Our results highlight the profound influence of defects on the electronic landscape, exemplified by their impact on the device built-in potential, and consequently, the open-circuit voltage. Even low ion densities can have an impact on the electronic landscape when both cations and anions are considered as mobile. Moreover, we find that all measured ionic defects fulfil the Meyer–Neldel rule with a characteristic energy connected to the underlying ion hopping process. These findings support a general categorization of defects in halide perovskite compounds. Defects in perovskite affect the properties and performance in optoelectronic devices, yet the nature of ionic defects remains elusive. Here, the authors investigate the ionic defect landscape in perovskite introduced by varying precursor stoichiometry, and find the defects fulfill the Meyer-Neldel rule.
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50
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Gupta V, Lucarelli G, Castro-Hermosa S, Brown T, Ottavi M. Investigation of hysteresis in hole transport layer free metal halide perovskites cells under dark conditions. NANOTECHNOLOGY 2020; 31:445201. [PMID: 32679576 DOI: 10.1088/1361-6528/aba713] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Recent research is a testimony to the fact that perovskite material based solar cells are most efficient since they exhibit high power conversion efficiency and low cost of fabrication. Various perovskite materials display hysteresis in their current-voltage characteristic which accounts for memory behaviour. In this paper, we demonstrate efficient non-volatile memory devices based on hybrid organic-inorganic perovskite (CH3NH3PbI3) as a resistive switching layer on a Glass/Indium Tin Oxide (ITO) substrate. Our perovskite solar cells have been developed over the fully solution processed electron transport layer (ETL) which is a combination of SnO2 and mesoporous (m)-TiO2 scaffold layers. Hysteresis behaviour was observed in the current-voltage analysis achieving high ratio of ON & OFF current under dark and ambient conditions. Proposed perovskite-based Glass/ITO/SnO2/m-TiO2/CH3NH3PbI3/Au device has a hole transport layer (HTL) free structure, which is mainly responsible for a large ratio of ON & OFF current. The presence of voids in the scaffold m-TiO2 layer are also accountable for increasing electron/hole path length which escalates the recombination rate at the surface of the ETL/perovskite interface resulting in large hysteresis in the I-V curve. This memristor device operates at a low energy due to SnO2 layer's higher electron mobility and wide energy band gap. Our experimental results also show the dependency of voltage scan range & rate of scanning on the hysteresis behaviour in dark conditions. This memristive behaviour of the proposed device depicts drift in hysteresis loop with respect to the number of cycles, which would have a significant impact in neuromorphic applications. Moreover, due to the identical fabrication process of the proposed perovskite-based memristor device and perovskite solar cells, this device could be integrated inside a photovoltaic array to work as a power-on-chip device, where generation and computation could be possible on the same substrate for memory and neuromorphic applications.
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Affiliation(s)
- Vishal Gupta
- Department of Electronic Engineering, University of Rome, Tor Vergata, Roma, Italy
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