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Zhang Y, Chen X, Yu Y, Huang Y, Qiu M, Liu F, Feng M, Gao C, Deng S, Fu X. A Femtosecond Electron-Based Versatile Microscopy for Visualizing Carrier Dynamics in Semiconductors Across Spatiotemporal and Energetic Domains. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2400633. [PMID: 38894590 PMCID: PMC11336951 DOI: 10.1002/advs.202400633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 04/16/2024] [Indexed: 06/21/2024]
Abstract
Carrier dynamics detection in different dimensions (space, time, and energy) with high resolutions plays a pivotal role in the development of modern semiconductor devices, especially in low-dimensional, high-speed, and ultrasensitive devices. Here, a femtosecond electron-based versatile microscopy is reported that combines scanning ultrafast electron microscopy (SUEM) imaging and time-resolved cathodoluminescence (TRCL) detection, which allows for visualizing and decoupling different dynamic processes of carriers involved in surface and bulk in semiconductors with unprecedented spatiotemporal and energetic resolutions. The achieved spatial resolution is better than 10 nm, and the temporal resolutions for SUEM imaging and TRCL detection are ≈500 fs and ≈4.5 ps, respectively, representing state-of-the-art performance. To demonstrate its unique capability, the surface and bulk carrier dynamics involved in n-type gallium arsenide (GaAs) are directly tracked and distinguished. It is revealed, in real time and space, that hot carrier cooling, defect trapping, and interband-/defect-assisted radiative recombination in the energy domain result in ordinal super-diffusion, localization, and sub-diffusion of carriers at the surface, elucidating the crucial role of surface states on carrier dynamics. The study not only gives a comprehensive physical picture of carrier dynamics in GaAs, but also provides a powerful platform for exploring complex carrier dynamics in semiconductors for promoting their device performance.
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Affiliation(s)
- Yaqing Zhang
- Ultrafast Electron Microscopy LaboratoryMOE Key Laboratory of Weak‐Light Nonlinear PhotonicsSchool of PhysicsNankai UniversityTianjin300071China
| | - Xiang Chen
- Ultrafast Electron Microscopy LaboratoryMOE Key Laboratory of Weak‐Light Nonlinear PhotonicsSchool of PhysicsNankai UniversityTianjin300071China
| | - Yaocheng Yu
- Ultrafast Electron Microscopy LaboratoryMOE Key Laboratory of Weak‐Light Nonlinear PhotonicsSchool of PhysicsNankai UniversityTianjin300071China
| | - Yue Huang
- Ultrafast Electron Microscopy LaboratoryMOE Key Laboratory of Weak‐Light Nonlinear PhotonicsSchool of PhysicsNankai UniversityTianjin300071China
| | - Moxi Qiu
- Ultrafast Electron Microscopy LaboratoryMOE Key Laboratory of Weak‐Light Nonlinear PhotonicsSchool of PhysicsNankai UniversityTianjin300071China
| | - Fang Liu
- Ultrafast Electron Microscopy LaboratoryMOE Key Laboratory of Weak‐Light Nonlinear PhotonicsSchool of PhysicsNankai UniversityTianjin300071China
| | - Min Feng
- Ultrafast Electron Microscopy LaboratoryMOE Key Laboratory of Weak‐Light Nonlinear PhotonicsSchool of PhysicsNankai UniversityTianjin300071China
| | - Cuntao Gao
- Ultrafast Electron Microscopy LaboratoryMOE Key Laboratory of Weak‐Light Nonlinear PhotonicsSchool of PhysicsNankai UniversityTianjin300071China
| | - Shibing Deng
- Ultrafast Electron Microscopy LaboratoryMOE Key Laboratory of Weak‐Light Nonlinear PhotonicsSchool of PhysicsNankai UniversityTianjin300071China
| | - Xuewen Fu
- Ultrafast Electron Microscopy LaboratoryMOE Key Laboratory of Weak‐Light Nonlinear PhotonicsSchool of PhysicsNankai UniversityTianjin300071China
- School of Materials Science and EngineeringSmart Sensing Interdisciplinary Science CenterNankai UniversityTianjin300350China
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Li D, Li R, Zhao Y, Wang K, Fan K, Guo W, Chen Q, Li Y. g-C 3N 4 as ballistic electron transport "Tunnel" in CsPbBr 3-based ternary photocatalyst for gas phase CO 2 reduction. J Colloid Interface Sci 2024; 666:66-75. [PMID: 38583211 DOI: 10.1016/j.jcis.2024.03.193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2024] [Revised: 03/26/2024] [Accepted: 03/28/2024] [Indexed: 04/09/2024]
Abstract
Perovskite CsPbBr3 quantum dot shows great potential in artificial photosynthesis, attributed to its outstanding optoelectronic properties. Nevertheless, its photocatalytic activity is hindered by insufficient catalytic active sites and severe charge recombination. In this work, a CsPbBr3@Ag-C3N4 ternary heterojunction photocatalyst is designed and synthesized for high-efficiency CO2 reduction. The CsPbBr3 quantum dots and Ag nanoparticles are chemically anchored on the surface of g-C3N4 sheets, forming an electron transfer tunnel from CsPbBr3 quantum dots to Ag nanoparticles via g-C3N4 sheets. The resulting CsPbBr3@Ag-C3N4 ternary photocatalyst, with spatial separation of photogenerated carriers, achieves a remarkable conversion rate of 19.49 μmol·g-1·h-1 with almost 100 % CO selectivity, a 3.13-fold enhancement in photocatalytic activity as compared to CsPbBr3 quantum dots. Density functional theory calculations reveal the rapid CO2 adsorption/activation and the decreased free energy (0.66 eV) of *COOH formation at the interface of Ag nanoparticles and g-C3N4 in contrast to the g-C3N4, leading to the excellent photocatalytic activity, while the thermodynamically favored CO desorption contributes to the high CO selectivity. This work presents an innovative strategy of constructing perovskite-based photocatalyst by modulating catalyst structure and offers profound insights for efficient CO2 conversion.
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Affiliation(s)
- Dong Li
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Experimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China
| | - Renyi Li
- Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), Frontiers Science Center for High Energy Material (MOE), State Key Laboratory of Explosion Science and Technology, School of Physics, Beijing Institute of Technology, Beijing 100081, PR China
| | - Yizhou Zhao
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Experimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China
| | - Kaixuan Wang
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Experimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China
| | - Ke Fan
- State Key Laboratory of Fine Chemicals, Institute of Artificial Photosynthesis, Institute for Energy Science and Technology, Dalian University of Technology, Dalian 116024, PR China
| | - Wei Guo
- Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE), Frontiers Science Center for High Energy Material (MOE), State Key Laboratory of Explosion Science and Technology, School of Physics, Beijing Institute of Technology, Beijing 100081, PR China.
| | - Qi Chen
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Experimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China
| | - Yujing Li
- Beijing Key Laboratory of Construction Tailorable Advanced Functional Materials and Green Applications, Experimental Center of Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, PR China.
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Bai Y, He J, Ran R, Zhou W, Wang W, Shao Z. Complex Metal Oxides as Emerging Inorganic Hole-Transporting Materials for Perovskite Solar Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2310227. [PMID: 38196154 DOI: 10.1002/smll.202310227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/25/2023] [Indexed: 01/11/2024]
Abstract
Perovskite solar cells (PSCs) have achieved revolutionary progress during the past decades with a rapidly boosting rate in power conversion efficiencies from 3.8% to 26.1%. However, high-efficiency PSCs with organic hole-transporting materials (HTMs) suffer from inferior long-term stability and high costs. The replacement of organic HTMs with inorganic counterparts such as metal oxides can solve the above-mentioned problems to realize highly robust and cost-effective PSCs. Nevertheless, the widely used simple metal oxide-based HTMs are limited by the low conductivity and poor light transmittance due to the fixed atomic environment. As an emerging family of inorganic HTMs, complex metal oxides with superior structural/compositional flexibility have attracted rapidly increasing interest recently, showing superior carrier conductivity/mobility and superb light transmittance. Herein, the recent advancements in the design and development of complex metal oxide-based HTMs for high-performance PSCs are summarized by emphasizing the superiority of complex metal oxides as HTMs over simple metal oxide-based counterparts. Consequently, several distinct strategies for the design of complex metal oxide-based HTMs are proposed. Last, the future directions and remaining challenges of inorganic complex metal oxide-based HTMs for PSCs are also presented. This review aims to provide valuable guidelines for the further advancements of robust, high-efficiency, and low-cost PSCs.
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Affiliation(s)
- Yu Bai
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, China
| | - Jingsheng He
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, China
| | - Ran Ran
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, China
| | - Wei Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, China
| | - Wei Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, China
| | - Zongping Shao
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, China
- WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, Western Australia, 6845, Australia
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Qin Q, Xia ZH, Liu WQ, Chen HY, Kuang DB. Construction of Cs 2AgBiCl 6/COF Heterojunction for Boosted Photocatalytic Thioester Oxidation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2402410. [PMID: 38766970 DOI: 10.1002/smll.202402410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 05/08/2024] [Indexed: 05/22/2024]
Abstract
Lead-free halide perovskites as a new kind of potential candidate for photocatalytic organic synthesis have attracted much attention recently. The rational heterojunction construction is regarded as an efficient strategy to delicately regulate their catalytic performances. Herein, a semi-conductive covalent organic framework (COF) nanosheet, C4N, is employed as the functional component to construct Cs2AgBiCl6/C4N (CABC/C4N) heterojunction. It is found that the C4N nanosheets with rich surface functional groups can serve as heterogeneous nucleation sites to manipulate the growth of CABC nanocrystals and afford close contact between each other, therefore facilitate the transfer and spatial separation of photogenerated charge carriers, as verified by in situ X-ray photoelectronic spectroscopy and Kelvin probe force microscopy. Moreover, the oxygen affinity of C4N endows the heterojunctions with outstanding aerobic reactivity, thus improving the photocatalytic performance largely. The optimal CABC/C4N heterojunction delivers a thioanisole conversion efficiency of 100% after 6 h, which is 2.2 and 7.7-fold of that of CABC and C4N. This work provides a new ideal for the design and application of lead-free perovskite heterojunction photocatalysts for organic reactions.
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Affiliation(s)
- Qi Qin
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510006, China
- School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, China
| | - Zhi-Hua Xia
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510006, China
| | - Wei-Qi Liu
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510006, China
| | - Hong-Yan Chen
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510006, China
| | - Dai-Bin Kuang
- Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, LIFM, GBRCE for Functional Molecular Engineering, School of Chemistry, IGCME, Sun Yat-sen University, Guangzhou, 510006, China
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5
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Lv P, Zhao D, Ma Z, Cong M, Sui Y, Xiao G, Zou B. Pressure-Modulated Interface Engineering toward Realizing Core@Shell Configuration Transition. NANO LETTERS 2023; 23:11982-11988. [PMID: 38051759 DOI: 10.1021/acs.nanolett.3c04359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
The strained interface of core@shell nanocrystals (NCs) can effectively modulate the energy level alignment, thereby significantly affecting the optical properties. Herein, the unique photoluminescence (PL) response of doped Mn ions is introduced as a robust probe to detect the targeted pressure-strain relation of CdS@ZnS NCs. Results show that the core experiences actually less pressure than the applied external pressure, attributed to the pressure-induced optimized interface that reduces the compressive strain on core. The pressure difference between core and shell increases the conduction band and valence band offsets and further achieves the core@shell configuration transition from quasi type II to type I. Accordingly, the PL intensity of CdS@ZnS NCs slightly increases, along with a faster blue-shift rate of PL peak under low pressure. This study elucidates the interplay between external physical pressure and interfacial chemical stress for core@shell NCs, leading to precise construction of interface engineering for practical applications.
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Affiliation(s)
- Pengfei Lv
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Dianlong Zhao
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Zhiwei Ma
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Ming Cong
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Yongming Sui
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Guanjun Xiao
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
| | - Bo Zou
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University, Changchun 130012, People's Republic of China
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6
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Lai J, Zhu R, Tan J, Yang Z, Ye S. Stacking Arrangement and Orientation of Aromatic Cations Tune Bandgap and Charge Transport of 2D Organic-Inorganic Hybrid Perovskites. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2303449. [PMID: 37495901 DOI: 10.1002/smll.202303449] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Revised: 07/10/2023] [Indexed: 07/28/2023]
Abstract
Chemical modifications on aromatic spacers of 2D perovskites have been demonstrated to be an effective strategy to simultaneously improve optoelectronic properties and stability. However, its underlying mechanism is poorly understood. By using 2D phenyl-based perovskites ([C6 H5 (CH2 )m NH3 ]2 PbI4 ) as models, the authors have revealed how the chemical nature of aromatic cations tunes the bandgap and charge transport of 2D perovskites by utilizing sum-frequency generation vibrational spectroscopy to determine the stacking arrangement and orientation of aromatic cations. It is found that the antiparallel slip-stack arrangement of phenyl rings between adjacent layers induces an indirect band gap, resulting in anomalous carrier dynamics. Incorporation of the CH2 moiety causes stacking rearrangement of the phenyl ring and thus promotes an indirect to direct bandgap transition. In direct-bandgap perovskites, higher carrier mobility correlates with a larger orientation angle of the phenyl ring. Further optimizing the orientation angle by introducing a para-substituted element in a phenyl ring, higher carrier mobility is obtained. This work highlights the importance of leveraging stacking arrangement and orientation of the aromatic cations to tune the photophysical properties, which opens up an avenue for advancing high-performance 2D perovskites optoelectronics via molecular engineering.
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Affiliation(s)
- Jing Lai
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Renlong Zhu
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Junjun Tan
- Hefei National Laboratory, University of Science and Technology of China, Hefei, Anhui, 230088, China
| | - Zhe Yang
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Shuji Ye
- Hefei National Research Center for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui, 230026, China
- Hefei National Laboratory, University of Science and Technology of China, Hefei, Anhui, 230088, China
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7
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Xiao Y, Zhang H, Zhao Y, Liu P, Kondamareddy KK, Wang C. Carrier Modulation via Tunnel Oxide Passivating at Buried Perovskite Interface for Stable Carbon-Based Solar Cells. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2640. [PMID: 37836281 PMCID: PMC10574625 DOI: 10.3390/nano13192640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/19/2023] [Accepted: 09/21/2023] [Indexed: 10/15/2023]
Abstract
Carbon-based perovskite solar cells (C-PSCs) have the impressive characteristics of good stability and potential commercialization. The insulating layers play crucial roles in charge modulation at the buried perovskite interface in mesoporous C-PSCs. In this work, the effects of three different tunnel oxide layers on the performance of air-processed C-PSCs are scrutinized to unveil the passivating quality. Devices with ZrO2-passivated TiO2 electron contacts exhibit higher power conversion efficiencies (PCEs) than their Al2O3 and SiO2 counterparts. The porous feature and robust chemical properties of ZrO2 ensure the high quality of the perovskite absorber, thus ensuring the high repeatability of our devices. An efficiency level of 14.96% puts our device among the state-of-the-art hole-conductor-free C-PSCs, and our unencapsulated device maintains 88.9% of its initial performance after 11,520 h (480 days) of ambient storage. These results demonstrate that the function of tunnel oxides at the perovskite/electron contact interface is important to manipulate the charge transfer dynamics that critically affect the performance and stability of C-PSCs.
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Affiliation(s)
- Yuqing Xiao
- School of Automation, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China
- Key Laboratory of Artificial Micro & Nano Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Huijie Zhang
- Key Laboratory of Artificial Micro & Nano Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Yue Zhao
- Key Laboratory of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Laboratory of Modern Optical Technologies of Education Ministry of China, School of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
| | - Pei Liu
- Key Laboratory of Artificial Micro & Nano Structures of Ministry of Education, School of Physics and Technology, Wuhan University, Wuhan 430072, China
| | - Kiran Kumar Kondamareddy
- Department of Physics, School of Pure Sciences, College of Engineering Science and Technology, FIJI National University, Lautoka Campus, Suva 744101, Fiji
| | - Changlei Wang
- Key Laboratory of Advanced Optical Manufacturing Technologies of Jiangsu Province & Key Laboratory of Modern Optical Technologies of Education Ministry of China, School of Optoelectronic Science and Engineering & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215006, China
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8
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Liu G, Jiang X, Feng W, Yang G, Chen X, Ning Z, Wu WQ. Synergic Electron and Defect Compensation Minimizes Voltage Loss in Lead-Free Perovskite Solar Cells. Angew Chem Int Ed Engl 2023; 62:e202305551. [PMID: 37325943 DOI: 10.1002/anie.202305551] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/15/2023] [Accepted: 06/16/2023] [Indexed: 06/17/2023]
Abstract
Sn perovskite solar cells have been regarded as one of the most promising alternatives to the Pb-based counterparts due to their low toxicity and excellent optoelectronic properties. However, the Sn perovskites are notorious to feature heavy p-doping characteristics and possess abundant vacancy defects, which result in under-optimized interfacial energy level alignment and severe nonradiative recombination. Here, we reported a synergic "electron and defect compensation" strategy to simultaneously modulate the electronic structures and defect profiles of Sn perovskites via incorporating a traced amount (0.1 mol %) of heterovalent metal halide salts. Consequently, the doping level of modified Sn perovskites was altered from heavy p-type to weak p-type (i.e. up-shifting the Fermi level by ∼0.12 eV) that determinately reducing the barrier of interfacial charge extraction and effectively suppressing the charge recombination loss throughout the bulk perovskite film and at relevant interfaces. Pioneeringly, the resultant device modified with electron and defect compensation realized a champion efficiency of 14.02 %, which is ∼46 % higher than that of control device (9.56 %). Notably, a record-high photovoltage of 1.013 V was attained, corresponding to the lowest voltage deficit of 0.38 eV reported to date, and narrowing the gap with Pb-based analogues (∼0.30 V).
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Affiliation(s)
- Gengling Liu
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE), Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, 510006, Guangzhou, China
| | - Xianyuan Jiang
- School of Physical Science and Technology, ShanghaiTech University, 201210, Shanghai, China
| | - Wenhuai Feng
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE), Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, 510006, Guangzhou, China
| | - Guo Yang
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE), Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, 510006, Guangzhou, China
| | - Xi Chen
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE), Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, 510006, Guangzhou, China
| | - Zhijun Ning
- School of Physical Science and Technology, ShanghaiTech University, 201210, Shanghai, China
| | - Wu-Qiang Wu
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE), Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, 510006, Guangzhou, China
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Guo Y, Huang L, Wang C, Liu S, Huang J, Liu X, Zhang J, Hu Z, Zhu Y. Advances on the Application of Wide Band-Gap Insulating Materials in Perovskite Solar Cells. SMALL METHODS 2023; 7:e2300377. [PMID: 37254269 DOI: 10.1002/smtd.202300377] [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: 03/23/2023] [Revised: 05/07/2023] [Indexed: 06/01/2023]
Abstract
In recent years, the development of perovskite solar cells (PSCs) is advancing rapidly with their recorded photoelectric conversion efficiency reaching 25.8%. However, for the commercialization of PSCs, it is also necessary to solve their stability issue. In order to improve the device performance, various additives and interface modification strategies have been proposed. While, in many cases, they can guarantee a significant increase in efficiency, but not ensure improved stability. Therefore, materials that improve the device efficiency and stability simultaneously are urgently needed. Some wide band-gap insulating materials with stable physical and chemical properties are promising alternative materials. In this review, the application of wide band-gap insulating materials in PSCs, including their preparation methods, working roles, and mechanisms are described, which will promote the commercial application of PSCs.
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Affiliation(s)
- Yi Guo
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China
| | - Like Huang
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China
- National Laboratory of Solid State Microstructures, Nanjing University, Nanjing, 210093, China
| | - Chaofeng Wang
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China
| | - Shuang Liu
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China
| | - Jiajia Huang
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China
| | - Xiaohui Liu
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China
| | - Jing Zhang
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China
| | - Ziyang Hu
- Department of Microelectronic Science and Engineering, School of Physical Science and Technology, Ningbo University, Ningbo, 315211, China
| | - Yuejin Zhu
- School of Information Engineering, College of Science and Technology, Ningbo University, Ningbo, 315300, China
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10
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Qureshi A, Javed S, Akram MA, Schmidt-Mende L, Fakharuddin A. Solvent-Assisted Crystallization of an α-Fe 2O 3 Electron Transport Layer for Efficient and Stable Perovskite Solar Cells Featuring Negligible Hysteresis. ACS OMEGA 2023; 8:18106-18115. [PMID: 37251118 PMCID: PMC10210035 DOI: 10.1021/acsomega.3c01405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Accepted: 04/27/2023] [Indexed: 05/31/2023]
Abstract
Inorganic-organic metal halide perovskite solar cells (PSCs) show power conversion efficiency values approaching those of state-of-the-art silicon solar cells. In a quest to find suitable charge transport materials in PSCs, hematite (α-Fe2O3) has emerged as a potential electron transport layer (ETL) in n-i-p planar PSCs due to its low cost, UV light stability, and nontoxicity. Yet, the performance of α-Fe2O3-based PSCs is far lower than that of state-of-the-art PSCs owing to the poor quality of the α-Fe2O3 ETL. In this work, solvent-assisted crystallization of α-Fe2O3 ETLs was carried out to examine the impact of solvents on the optoelectronic properties of α-Fe2O3 thin films. Among the various solvents used in this study (deionized water, ethanol, iso-propanol, and iso-butanol), optimized ethanol-based α-Fe2O3 ETLs lead to champion device performance with a power conversion efficiency of 13% with a reduced hysteresis index of 0.04 in an n-i-p-configured PSC. The PSC also exhibited superior long-term inert and ambient stabilities compared to a reference device made using a SnO2 ETL. Through a series of experiments spanning structural, morphological, and optoelectronic properties of the various α-Fe2O3 thin films and their devices, we provide insights into the reasons for the improved photovoltaic performance. It is noted that the formation of a pinhole-free compact morphology of ETLs facilitates crack-free surface coverage of the perovskite film atop an α-Fe2O3 ETL, reduces interfacial recombination, and enhances charge transfer efficiency. This work opens up the route toward novel ETLs for the development of efficient and photo-stable PSCs.
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Affiliation(s)
- Akbar
Ali Qureshi
- School
of Chemical & Materials Engineering, National University of Sciences & Technology, Islamabad 44000, Pakistan
| | - Sofia Javed
- School
of Chemical & Materials Engineering, National University of Sciences & Technology, Islamabad 44000, Pakistan
| | - Muhammad Aftab Akram
- Department
of Materials Science & Engineering, Pak-Austria Fachhochschule, Institute of Applied Sciences & Technology, Haripur 22650, Pakistan
| | | | - Azhar Fakharuddin
- Department
of Physics, University of Konstanz, Konstanz 78464, Germany
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Hui W, Kang X, Wang B, Li D, Su Z, Bao Y, Gu L, Zhang B, Gao X, Song L, Huang W. Stable Electron-Transport-Layer-Free Perovskite Solar Cells with over 22% Power Conversion Efficiency. NANO LETTERS 2023; 23:2195-2202. [PMID: 36913436 DOI: 10.1021/acs.nanolett.2c04720] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Due to their low cost and simplified production process, electron-transport-layer-free (ETL-free) perovskite solar cells (PSCs) have attracted great attention recently. However, the performance of ETL-free PSCs is still at a disadvantage compared to cells with a conventional n-i-p structure due to the severe recombination of charge carriers at the perovskite/anode interface. Here, we report a strategy to fabricate stable ETL-free FAPbI3 PSCs by in situ formation of a low dimensional perovskite layer between the FTO and the perovskite. This interlayer gives rise to the energy band bending and reduced defect density in the perovskite film and indirect contact and improved energy level alignment between the anode and perovskite, which facilitates charge carrier transport and collection and suppresses charge carrier recombination. As a result, ETL-free PSCs with a power conversion efficiency (PCE) exceeding 22% are achieved under ambient conditions.
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Affiliation(s)
- Wei Hui
- Frontiers Science Center for Flexible Electronics (FSCFE), Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, P. R. China
| | - Xinxin Kang
- Frontiers Science Center for Flexible Electronics (FSCFE), Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, P. R. China
| | - Baohua Wang
- Frontiers Science Center for Flexible Electronics (FSCFE), Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, P. R. China
| | - Deli Li
- Fujian Cross Strait Institute of Flexible Electronics (Future Technologies), Fujian Normal University, Fuzhou 350117, P. R. China
| | - Zhenhuang Su
- Shanghai Synchrotron Radiation Facility (SSRF), Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai 201204, P. R. China
| | - Yaqi Bao
- Frontiers Science Center for Flexible Electronics (FSCFE), Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, P. R. China
| | - Lei Gu
- Frontiers Science Center for Flexible Electronics (FSCFE), Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, P. R. China
| | - Biao Zhang
- Frontiers Science Center for Flexible Electronics (FSCFE), Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, P. R. China
- Research & Development Institute, Northwestern Polytechnical University in Shenzhen, Shenzhen, Guangdong 518057, P. R. China
| | - Xingyu Gao
- Shanghai Synchrotron Radiation Facility (SSRF), Zhangjiang Laboratory, Shanghai Advanced Research Institute, Chinese Academy of Sciences, 239 Zhangheng Road, Shanghai 201204, P. R. China
| | - Lin Song
- Frontiers Science Center for Flexible Electronics (FSCFE), Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, P. R. China
| | - Wei Huang
- Frontiers Science Center for Flexible Electronics (FSCFE), Institute of Flexible Electronics (IFE), Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, P. R. China
- Fujian Cross Strait Institute of Flexible Electronics (Future Technologies), Fujian Normal University, Fuzhou 350117, P. R. China
- Key Laboratory for Organic Electronics & Information Displays (KLOEID) and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, Nanjing 210023, P. R. China
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing 211816, P. R. China
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12
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Han X, Cheng P, Shi R, Zheng Y, Qi S, Xu J, Bu XH. Linear optical afterglow and nonlinear optical harmonic generation from chiral tin(IV) halides: the role of lattice distortions. MATERIALS HORIZONS 2023; 10:1005-1011. [PMID: 36651561 DOI: 10.1039/d2mh01429g] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The striking chemical variability of hybrid organic-inorganic metal halides (HOMHs) endows them with fascinating optoelectronic properties. The inorganic skeletons of HOMHs are often flexible and their lattice deformations could serve as an effective factor for enabling the functionalities of HOMHs. Here, the linear and nonlinear optical properties of zero-dimensional (0D) tin(IV) halides have been tuned by structural distortion facilitated by the chiral amines. Enantiopure α-methylbenzyl ammoniums (XMBA, X = Cl, F) effectively transfer their chirality to the inorganic scaffolds when forming the tin(IV) halides, which enables polar arrangements in their crystals and leads to outstanding second-order nonlinear optical performances. In contrast, the racemic mixture of R- and S-FMBA results in the formation of HOMHs with room temperature phosphorescence. The lower lattice deformation in (rac-FMBA)2SnCl6 restrains the non-radiative decay from electron-phonon coupling and facilitates the photoluminescence. Meanwhile, the marked π-π interaction stabilizes the T1 state for phosphorescent emission. These distinct linear and nonlinear optical properties denote the important role that the lattice distortion plays in tuning the optical properties of low-dimensional HOMHs, and offer a promising perspective of 0D tin(IV) halides for applications in optoelectronic materials and devices.
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Affiliation(s)
- Xiao Han
- School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China.
| | - Puxin Cheng
- School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China.
| | - Rongchao Shi
- School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China.
| | - Yongshen Zheng
- School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China.
| | - Siming Qi
- School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China.
| | - Jialiang Xu
- School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China.
| | - Xian-He Bu
- School of Materials Science and Engineering, Smart Sensing Interdisciplinary Science Center, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Nankai University, Tongyan Road 38, Tianjin 300350, P. R. China.
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13
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Sajid S, Alzahmi S, Wei D, Salem IB, Park J, Obaidat IM. Diethanolamine Modified Perovskite-Substrate Interface for Realizing Efficient ESL-Free PSCs. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:250. [PMID: 36678003 PMCID: PMC9865489 DOI: 10.3390/nano13020250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 12/31/2022] [Accepted: 01/04/2023] [Indexed: 06/17/2023]
Abstract
Simplifying device layout, particularly avoiding the complex fabrication steps and multiple high-temperature treatment requirements for electron-selective layers (ESLs) have made ESL-free perovskite solar cells (PSCs) attractive. However, the poor perovskite/substrate interface and inadequate quality of solution-processed perovskite thin films induce inefficient interfacial-charge extraction, limiting the power conversion efficiency (PCEs) of ESL-free PSCs. A highly compact and homogenous perovskite thin film with large grains was formed here by inserting an interfacial monolayer of diethanolamine (DEA) molecules between the perovskite and ITO substrate. In addition, the DEA created a favorable dipole layer at the interface of perovskite and ITO substrate by molecular adsorption, which suppressed charge recombination. Comparatively, PSCs based on DEA-treated ITO substrates delivered PCEs of up to 20.77%, one of the highest among ESL-free PSCs. Additionally, this technique successfully elongates the lifespan of ESL-free PSCs as 80% of the initial PCE was maintained after 550 h under AM 1.5 G irradiation at ambient temperature.
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Affiliation(s)
- Sajid Sajid
- Department of Chemical & Petroleum Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- National Water and Energy Center, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Salem Alzahmi
- Department of Chemical & Petroleum Engineering, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- National Water and Energy Center, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
| | - Dong Wei
- College of Physics and Energy, Fujian Normal University, Fuzhou 350007, China
| | - Imen Ben Salem
- College of Natural and Health Sciences, Zayed University, Abu Dhabi P.O. Box 144534, United Arab Emirates
| | - Jongee Park
- Department of Metallurgical and Materials Engineering, Atilim University, Ankara 06836, Turkey
| | - Ihab M. Obaidat
- National Water and Energy Center, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
- Department of Physics, United Arab Emirates University, Al Ain P.O. Box 15551, United Arab Emirates
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14
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Ma Y, Han G, Yang M, Guo M, Xiao Y, Guo Y, Hou W. Inhibiting Li + migration by thenoyltrifluoroacetone toward efficient and stable perovskite solar cells. Inorg Chem Front 2023. [DOI: 10.1039/d2qi02460h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023]
Abstract
Thenoyltrifluoroacetone (TTA) modifies the perovskite/spiro-OMeTAD interface to inhibit Li+ migration from the hole transport layer to the perovskite layer and improves the performance of perovskite solar cells.
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15
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Wei X, Zhang P, Xu T, Zhou H, Bai Y, Chen Q. Chemical approaches for electronic doping in photovoltaic materials beyond crystalline silicon. Chem Soc Rev 2022; 51:10016-10063. [PMID: 36398768 DOI: 10.1039/d2cs00110a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Electronic doping is applied to tailor the electrical and optoelectronic properties of semiconductors, which have been widely adopted in information and clean energy technologies, like integrated circuit fabrication and PVs. Though this concept has prevailed in conventional PVs, it has achieved limited success in the new-generation PV materials, particularly in halide perovskites, owing to their soft lattice nature and self-compensation by intrinsic defects. In this review, we summarize the evolution of the theoretical understanding and strategies of electronic doping from Si-based photovoltaics to thin-film technologies, e.g., GaAs, CdTe and Cu(In,Ga)Se2, and also cover the emerging PVs including halide perovskites and organic solar cells. We focus on the chemical approaches to electronic doping, emphasizing various chemical interactions/bonding throughout materials synthesis/modification to device fabrication/operation. Furthermore, we propose new classifications and models of electronic doping based on the physical and chemical properties of dopants, in the context of solid-state chemistry, which inspires further development of optoelectronics based on perovskites and other hybrid materials. Finally, we outline the effects of electronic doping in semiconducting materials and highlight the challenges that need to be overcome for reliable and controllable doping.
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Affiliation(s)
- Xueyuan Wei
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China.
| | - Pengxiang Zhang
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China.
| | - Tailai Xu
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China.
| | - Huanping Zhou
- School of Materials Science and Engineering, Peking University, Beijing, 100871, P. R. China
| | - Yang Bai
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China.
| | - Qi Chen
- Experimental Centre for Advanced Materials, School of Materials Science and Engineering, Beijing Institute of Technology, Beijing, 100081, P. R. China.
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16
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Li D, Dong X, Cheng P, Song L, Wu Z, Chen Y, Huang W. Metal Halide Perovskite/Electrode Contacts in Charge-Transporting-Layer-Free Devices. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2203683. [PMID: 36319474 PMCID: PMC9798992 DOI: 10.1002/advs.202203683] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/04/2022] [Revised: 09/13/2022] [Indexed: 06/16/2023]
Abstract
Metal halide perovskites have drawn substantial interest in optoelectronic devices in the past decade. Perovskite/electrode contacts are crucial for constructing high-performance charge-transporting-layer-free perovskite devices, such as solar cells, field-effect transistors, artificial synapses, memories, etc. Many studies have evidenced that the perovskite layer can directly contact the electrodes, showing abundant physicochemical, electronic, and photoelectric properties in charge-transporting-layer-free perovskite devices. Meanwhile, for perovskite/metal contacts, some critical interfacial physical and chemical processes are reported, including band bending, interface dipoles, metal halogenation, and perovskite decomposition induced by metal electrodes. Thus, a systematic summary of the role of metal halide perovskite/electrode contacts on device performance is essential. This review summarizes and discusses charge carrier dynamics, electronic band engineering, electrode corrosion, electrochemical metallization and dissolution, perovskite decomposition, and interface engineering in perovskite/electrode contacts-based electronic devices for a comprehensive understanding of the contacts. The physicochemical, electronic, and morphological properties of various perovskite/electrode contacts, as well as relevant engineering techniques, are presented. Finally, the current challenges are analyzed, and appropriate recommendations are put forward. It can be expected that further research will lead to significant breakthroughs in their application and promote reforms and innovations in future solid-state physics and materials science.
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Affiliation(s)
- Deli Li
- Frontiers Science Center for Flexible ElectronicsXi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials and EngineeringNorthwestern Polytechnical University127 West Youyi RoadXi'an710072P. R. China
- Fujian cross Strait Institute of Flexible Electronics (Future Technologies)Fujian Normal UniversityFuzhou350117P. R. China
| | - Xue Dong
- Frontiers Science Center for Flexible ElectronicsXi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials and EngineeringNorthwestern Polytechnical University127 West Youyi RoadXi'an710072P. R. China
| | - Peng Cheng
- Frontiers Science Center for Flexible ElectronicsXi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials and EngineeringNorthwestern Polytechnical University127 West Youyi RoadXi'an710072P. R. China
| | - Lin Song
- Frontiers Science Center for Flexible ElectronicsXi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials and EngineeringNorthwestern Polytechnical University127 West Youyi RoadXi'an710072P. R. China
| | - Zhongbin Wu
- Frontiers Science Center for Flexible ElectronicsXi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials and EngineeringNorthwestern Polytechnical University127 West Youyi RoadXi'an710072P. R. China
| | - Yonghua Chen
- Key Laboratory of Flexible Electronics (KLoFE) and Institute of Advanced Materials (IAM)Nanjing Tech University30 South Puzhu RoadNanjingJiangsu211816P. R. China
| | - Wei Huang
- Frontiers Science Center for Flexible ElectronicsXi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials and EngineeringNorthwestern Polytechnical University127 West Youyi RoadXi'an710072P. R. China
- Key Laboratory of Flexible Electronics (KLoFE) and Institute of Advanced Materials (IAM)Nanjing Tech University30 South Puzhu RoadNanjingJiangsu211816P. R. China
- Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced MaterialsNanjing University of Posts and TelecommunicationsNanjing210023P. R. China
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17
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Liu G, Zhong Y, Feng W, Yang M, Yang G, Zhong JX, Tian T, Luo JB, Tao J, Yang S, Wang XD, Tan L, Chen Y, Wu WQ. Multidentate Chelation Heals Structural Imperfections for Minimized Recombination Loss in Lead-Free Perovskite Solar Cells. Angew Chem Int Ed Engl 2022; 61:e202209464. [PMID: 35982524 DOI: 10.1002/anie.202209464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Indexed: 11/09/2022]
Abstract
Tin-based perovskite solar cells (Sn-PSCs) have emerged as promising environmentally viable photovoltaic technologies, but still suffer from severe non-radiative recombination loss due to the presence of abundant deep-level defects in the perovskite film and under-optimized carrier dynamics throughout the device. Herein, we healed the structural imperfections of Sn perovskites in an "inside-out" manner by incorporating a new class of biocompatible chelating agent with multidentate claws, namely, 2-Guanidinoacetic acid (GAA), which passivated a variety of deep-level Sn-related and I-related defects, cooperatively reinforced the passivation efficacy, released the lattice strain, improved the structural toughness, and promoted the carrier transport of Sn perovskites. Encouragingly, an efficiency of 13.7 % with a small voltage deficit of ≈0.47 V has been achieved for the GAA-modified Sn-PSCs. GAA modification also extended the lifespan of Sn-PSCs over 1200 hours.
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Affiliation(s)
- Gengling Liu
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE), Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Yang Zhong
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Wenhuai Feng
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE), Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Meifang Yang
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE), Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Guo Yang
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE), Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Jun-Xing Zhong
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE), Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Tian Tian
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE), Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Jian-Bin Luo
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE), Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Junlei Tao
- Province-Ministry Co-construction Collaborative Innovation Center of Hebei Photovoltaic Technology, College of Physics Science and Technology, Hebei University, Baoding, 071002, China
| | - Shaopeng Yang
- Province-Ministry Co-construction Collaborative Innovation Center of Hebei Photovoltaic Technology, College of Physics Science and Technology, Hebei University, Baoding, 071002, China
| | - Xu-Dong Wang
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE), Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
| | - Licheng Tan
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Yiwang Chen
- Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang, 330031, China
| | - Wu-Qiang Wu
- Key Laboratory of Bioinorganic and Synthetic Chemistry (MoE), Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou, 510006, China
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18
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Recent progress of rare earth conversion material in perovskite solar cells: A mini review. INORG CHEM COMMUN 2022. [DOI: 10.1016/j.inoche.2022.109731] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sadegh F, Akman E, Prochowicz D, Tavakoli MM, Yadav P, Akin S. Facile NaF Treatment Achieves 20% Efficient ETL-Free Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2022; 14:38631-38641. [PMID: 35979724 DOI: 10.1021/acsami.2c06110] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Electron transporting layer (ETL)-free perovskite solar cells (PSCs) exhibit promising progress in photovoltaic devices due to the elimination of the complex and energy-/time-consuming preparation route of ETLs. However, the performance of ETL-free devices still lags behind conventional devices because of mismatched energy levels and undesired interfacial charge recombination. In this study, we introduce sodium fluoride (NaF) as an interface layer in ETL-free PSCs to align the energy level between the perovskite and the FTO electrode. KPFM measurements clearly show that the NaF layer covers the surface of rough underlying FTO very well. This interface modification reduces the work function of FTO by forming an interfacial dipole layer, leading to band bending at the FTO/perovskite interface, which facilitates an effective electron carrier collection. Besides, the part of Na+ ions is found to be able to migrate into the absorber layer, facilitating enlarged grains and spontaneous passivation of the perovskite layer. As a result, the efficiency of the NaF-treated cell reaches 20%, comparable to those of state-of-the-art ETL-based cells. Moreover, this strategy effectively enhances the operational stability of devices by preserving 94% of the initial efficiency after storage for 500 h under continuous light soaking at 55 °C. Overall, these improvements in photovoltaic properties are clear indicators of enhanced interface passivation by NaF-based interface engineering.
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Affiliation(s)
- Faranak Sadegh
- Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran
| | - Erdi Akman
- Laboratory of Photovoltaic Cells (PVcells), Karamanoglu Mehmetbey University, 70200 Karaman, Türkiye
| | - Daniel Prochowicz
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Mohammad Mahdi Tavakoli
- Department of Electrical Engineering and Computer Science, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Pankaj Yadav
- Department of Solar Energy, School of Technology, Pandit Deendayal Petroleum University, Gandhinagar382 007, Gujarat, India
| | - Seckin Akin
- Laboratory of Photovoltaic Cells (PVcells), Karamanoglu Mehmetbey University, 70200 Karaman, Türkiye
- Department of Metallurgical and Materials Engineering, Necmettin Erbakan University, 42060 Konya, Türkiye
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20
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Liu G, Zhong Y, Feng W, Yang M, Yang G, Zhong JX, Tian T, Luo JB, Tao J, Yang S, Wang X, Tan L, Chen Y, Wu WQ. Multidentate Chelation Heals Structural Imperfections for Minimized Recombination Loss in Lead‐Free Perovskite Solar Cells. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Genglig Liu
- Sun Yat-Sen University School of Chemistry 510006 Guangzhou CHINA
| | - Yang Zhong
- Nanchang University Institute of Polymers and Energy Chemistry CHINA
| | - Wenhuai Feng
- Sun Yat-Sen University School of Chemistry CHINA
| | - Meifang Yang
- Sun Yat-Sen University School of Chemistry CHINA
| | - Guo Yang
- Sun Yat-Sen University School of Chemistry CHINA
| | | | - Tian Tian
- Sun Yat-Sen University School of Chemistry CHINA
| | - Jian-Bin Luo
- Sun Yat-Sen University School of Chemistry CHINA
| | - Junlei Tao
- Hebei University College of Physics Science and Technology CHINA
| | - Shaopeng Yang
- Hebei University College of Physics Science and Technology CHINA
| | - Xudong Wang
- Sun Yat-Sen University School of Chemistry CHINA
| | - Licheng Tan
- Nanchang University Institute of Polymers and Energy Chemistry CHINA
| | - Yiwang Chen
- Nanchang University Institute of Polymers and Energy Chemistry CHINA
| | - Wu-Qiang Wu
- Sun Yat-Sen University School of Chemistry School of Chemistry 510006 Guangzhou CHINA
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21
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Abstract
Perovskite solar cells (PSCs) have captured the attention of the global energy research community in recent years by showing an exponential augmentation in their performance and stability. The supremacy of the light-harvesting efficiency and wider band gap of perovskite sensitizers have led to these devices being compared with the most outstanding rival silicon-based solar cells. Nevertheless, there are some issues such as their poor lifetime stability, considerable J–V hysteresis, and the toxicity of the conventional constituent materials which restrict their prevalence in the marketplace. The poor stability of PSCs with regard to humidity, UV radiation, oxygen and heat especially limits their industrial application. This review focuses on the in-depth studies of different direct and indirect parameters of PSC device instability. The mechanism for device degradation for several parameters and the complementary materials showing promising results are systematically analyzed. The main objective of this work is to review the effectual strategies of enhancing the stability of PSCs. Several important factors such as material engineering, novel device structure design, hole-transporting materials (HTMs), electron-transporting materials (ETMs), electrode materials preparation, and encapsulation methods that need to be taken care of in order to improve the stability of PSCs are discussed extensively. Conclusively, this review discusses some opportunities for the commercialization of PSCs with high efficiency and stability.
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22
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Huang X, Cui W, Liu S, Liu G, Zhang Y, Zhang Z, Shen G, Li Z, Wang J, Chen Y. One-step assembly of Pd-Keggin polyoxometalates for catalytic benzothiadiazole Generation and derived cell-imaging probe application. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.07.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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23
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Xu C, Chen X, Ma S, Shi M, Zhang S, Xiong Z, Fan W, Si H, Wu H, Zhang Z, Liao Q, Yin W, Kang Z, Zhang Y. Interpretation of Rubidium-Based Perovskite Recipes toward Electronic Passivation and Ion-Diffusion Mitigation. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2109998. [PMID: 35112404 DOI: 10.1002/adma.202109998] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Indexed: 06/14/2023]
Abstract
Rubidium cation (Rb+ ) addition is witnessed to play a pivotal role in boosting the comprehensive performance of organic-inorganic hybrid perovskite solar cells. However, the origin of such success derived from irreplaceable superiorities brought by Rb+ remains ambiguous. Herein, grain-boundary-including atomic models are adopted for the accurate theoretical analysis of practical Rb+ distribution in perovskite structures. The spatial distribution, covering both the grain interiors and boundaries, is thoroughly identified by virtue of synchrotron-based grazing-incidence X-ray diffraction. On this basis, the prominent elevation of the halogen vacancy formation energy, improved charge-carrier dynamics, and the electronic passivation mechanism in the grain interior are expounded. As evidenced by the increased energy barrier and suppressed microcurrent, the critical role of Rb+ addition in blocking the diffusion pathway along grain boundaries, inhibiting halide phase segregation, and eventually enhancing intrinsic stability is elucidated. Hence, the linkage avalanche effect of occupied location dominated by subtle changes in Rb+ concentration on electronic defects, ion migration, and phase stability is completely investigated in detail, shedding a new light on the advancement of high-efficiency cascade-incorporating strategies and perovskite compositional engineering.
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Affiliation(s)
- Chenzhe Xu
- Academy for Advanced Interdisciplinary Science and Technology, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Xiwen Chen
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Soochow University, Suzhou, 215006, P. R. China
| | - Shuangfei Ma
- Academy for Advanced Interdisciplinary Science and Technology, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Mingyue Shi
- Academy for Advanced Interdisciplinary Science and Technology, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Suicai Zhang
- Academy for Advanced Interdisciplinary Science and Technology, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Zhaozhao Xiong
- Academy for Advanced Interdisciplinary Science and Technology, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Wenqiang Fan
- Academy for Advanced Interdisciplinary Science and Technology, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Haonan Si
- Academy for Advanced Interdisciplinary Science and Technology, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Hualin Wu
- Academy for Advanced Interdisciplinary Science and Technology, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Zheng Zhang
- Academy for Advanced Interdisciplinary Science and Technology, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Qingliang Liao
- Academy for Advanced Interdisciplinary Science and Technology, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Wanjian Yin
- College of Energy, Soochow Institute for Energy and Materials Innovations (SIEMIS), Soochow University, Suzhou, 215006, P. R. China
| | - Zhuo Kang
- Academy for Advanced Interdisciplinary Science and Technology, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
| | - Yue Zhang
- Academy for Advanced Interdisciplinary Science and Technology, Beijing Advanced Innovation Center for Materials Genome Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Beijing Key Laboratory for Advanced Energy Materials and Technologies, School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
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Sun Y, Chen W, Sun Z. A mini review: Constructing perovskite p-n homojunction solar cells. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.08.055] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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25
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Cao J, Yin Z, Pang Q, Lu Y, Nong X, Zhang JZ. Modulating optical properties and interfacial electron transfer of CsPbBr 3 perovskite nanocrystals via indium ion and chlorine ion co-doping. J Chem Phys 2021; 155:234701. [PMID: 34937354 DOI: 10.1063/5.0076037] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
In this work, we demonstrated an in situ approach for doping CsPbBr3 nanocrystals (NCs) with In3+ and Cl- with a ligand-assisted precipitation method at room temperature. The In3+ and Cl- co-doped NCs are characterized by the powder x-ray diffraction patterns, ultraviolet-visible, photoluminescence (PL) spectroscopy, time-resolved PL (TRPL), ultraviolet photoelectron spectroscopy, x-ray photoelectron spectroscopy, and transmission electron microscopy. Based on PL and TRPL results, the non-radiative nature of In3+-doping induced localized impurity states is revealed. Furthermore, the impact of In3+ and Cl- doping on charge transfer (CT) from the NCs to molecular acceptors was investigated and the results indicate that the CT at the interface of NCs can be tuned and promoted by In3+ and Cl- co-doping. This enhanced CT is attributed to the enlarged energy difference between relevant states of the molecular acceptor and the NCs by In3+ and Cl- upon co-doping. This work provides insight into how to control interfacial CT in perovskite NCs, which is important for optoelectronic applications.
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Affiliation(s)
- Jianfei Cao
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, People's Republic of China
| | - Zuodong Yin
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, People's Republic of China
| | - Qi Pang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, People's Republic of China
| | - Yuexi Lu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, People's Republic of China
| | - Xiuqing Nong
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Guangxi, People's Republic of China
| | - Jin Zhong Zhang
- Department of Chemistry and Biochemistry, University of California, Santa Cruz, California 95064, USA
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The interface modified by CsPbBr3 quantum dots for hole transport layer-free perovskite solar cell. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.139153] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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27
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Wang L, Yang S, Han Q, Yu F, Zhang H, Cai X, Zhang C, Gao L, Ma T. Carrier Transport Layer-Free Perovskite Solar Cells. CHEMSUSCHEM 2021; 14:4776-4782. [PMID: 34435455 DOI: 10.1002/cssc.202101592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 08/23/2021] [Indexed: 06/13/2023]
Abstract
Power conversion efficiencies (PCEs) of up to 25.5 % have been reported for perovskite solar cells (PSCs). Thus, they have shown great potential for commercial applications. Therefore, simplifying technological process and reducing production costs have been a widespread concern among scientific and industrial communities. In this study, PSCs are prepared with the simplest device architecture (FTO/MAPbI3 /carbon). A high-quality perovskite film with few interface defects and good carrier transport is obtained by tuning the p-n properties, matching energy levels, and enhancing carrier collection and transport. A PCE of 12.01 % is achieved, which is the best reported to date for this device structure. The device also shows excellent long-term stability, owing to the elimination of charge transport layers and the usage of hydrophobic materials. This study provides a new approach to reduce production costs and simplify production of PSCs.
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Affiliation(s)
- Liang Wang
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, Japan
| | - Shuzhang Yang
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, Japan
| | - Qianji Han
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, Japan
| | - Fengyang Yu
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, Japan
| | - Hong Zhang
- Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Xiaoyong Cai
- CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, P. R. China
| | - Chu Zhang
- Department of Materials Science and Engineering, China Jiliang University, Hangzhou, 310018, P. R. China
| | - Liguo Gao
- State Key Laboratory of Fine Chemicals, School of petroleum and chemical engineering, Dalian University of Technology, Panjin, 124221, P. R. China
| | - Tingli Ma
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu-ku, Kitakyushu, Fukuoka, Japan
- Department of Materials Science and Engineering, China Jiliang University, Hangzhou, 310018, P. R. China
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Zhang J, Fang Y, Zhao W, Han R, Wen J, Liu SF. Molten-Salt-Assisted CsPbI 3 Perovskite Crystallization for Nearly 20%-Efficiency Solar Cells. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2103770. [PMID: 34554617 DOI: 10.1002/adma.202103770] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 08/24/2021] [Indexed: 06/13/2023]
Abstract
Dynamic manipulation of crystallization is pivotal to the quality of polycrystalline films. A molten-salt-assisted crystallization (MSAC) strategy is presented to improve grain growth of the all-inorganic perovskite films. Compared with the traditional solvent annealing, MSAC enables more intensive mass transfer by means of convection and diffusion, which is beneficial to the interaction among the precursor colloids and to inducing in-plane growth of perovskite grains, resulting in the formation of high-quality perovskite films with suppressed pinhole and crack formation. Additionally, the introduction of molten salt alters the intermediate phases, and thus changes the crystallization pathways by reducing the energy barrier to produce films with desired optical and electrical properties. As a result, the MSAC strategy endows the devices with champion steady-state output efficiency of 19.83% and open-circuit voltage (Voc ) as high as 1.2 V, among the highest for this type of solar cell, thanks to its effectively reduced Voc deficit.
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Affiliation(s)
- Jingru Zhang
- Shaanxi Engineering Lab for Advanced Energy Technology, Shaanxi Normal University, Xi'an, 710119, China
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Yuankun Fang
- Shaanxi Engineering Lab for Advanced Energy Technology, Shaanxi Normal University, Xi'an, 710119, China
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Wangen Zhao
- Shaanxi Engineering Lab for Advanced Energy Technology, Shaanxi Normal University, Xi'an, 710119, China
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Ruijie Han
- Shaanxi Engineering Lab for Advanced Energy Technology, Shaanxi Normal University, Xi'an, 710119, China
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Jialun Wen
- Shaanxi Engineering Lab for Advanced Energy Technology, Shaanxi Normal University, Xi'an, 710119, China
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
| | - Shengzhong Frank Liu
- Shaanxi Engineering Lab for Advanced Energy Technology, Shaanxi Normal University, Xi'an, 710119, China
- School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China
- Key Laboratory for Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Normal University, Xi'an, 710119, China
- Dalian National Laboratory for Clean Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China
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29
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Xie L, Zeng Q, Li Q, Wang S, Li L, Li Z, Liu F, Hao X, Hao F. A Green Lead Recycling Strategy from Used Lead Acid Batteries for Efficient Inverted Perovskite Solar Cells. J Phys Chem Lett 2021; 12:9595-9601. [PMID: 34582202 DOI: 10.1021/acs.jpclett.1c02831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Lead is widely used as a crucial elemental for lead acid batteries (LABs) and emerging halide perovskite solar cells (PSCs). However, the use of soluble lead will raise environmental concerns. For the purpose of Pb recycling, herein, we report a reactant-recycling strategy to extract Pb from used LABs and synthesize high-purity PbI2. The recycled PbI2 shows smaller grain size, higher crystallinity, and higher thermal stability compared to the commercial sources. Perovskite films deposited with the high-quality PbI2 show larger grain size and fewer defects than the commercial ones. Consequently, the synthesized PbI2 enables a power conversation efficiency of 20.45% for the inverted MAPbI3 (MA= methylammonium) PSCs with excellent air stability. This work offers a novel strategy for lead recovery from LABs and a green path for the realization of high-performance PSCs with high defect tolerance.
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Affiliation(s)
- Lisha Xie
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Qiang Zeng
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
- Yitai Technology Ltd., Hunan 410083, China
| | - Qingya Li
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
- Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Shurong Wang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Linhong Li
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Zhenyu Li
- Yitai Technology Ltd., Hunan 410083, China
| | - Fangyang Liu
- School of Metallurgy and Environment, Central South University, Changsha 410083, China
| | - Xiaojing Hao
- Australian Centre for Advanced Photovoltaics, School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia
| | - Feng Hao
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
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30
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Analysis of Hybrid Hetero-Homo Junction Lead-Free Perovskite Solar Cells by SCAPS Simulator. ENERGIES 2021. [DOI: 10.3390/en14185741] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In this work, we report on the effect of substituting the active intrinsic i-layer on a conventional pin structure of lead-free perovskite solar cell (PSC) by a homo p-n junction, keeping the thickness of the active layer constant. It is expected that when the active i-layer is substituted by a p-n homo junction, one can increase the collection efficiency of the photo-generated electrons and holes due to the built-in electric field of the homo junction. The impact of the technological and physical device parameters on the performance parameters of the solar cell have been worked out. It was found that p-side thickness must be wider than the n-side, while its acceptor concentration should be slightly lower than the donor concentration of the n-side to achieve maximum efficiency. In addition, different absorber types, namely, i-absorber, n-absorber and p-absorber, are compared to the proposed pn-absorber, showing a performance-boosting effect when using the latter. Moreover, the proposed structure is made without a hole transport layer (HTL) to avoid the organic issues of the HTL materials. The back metal work function, bulk trap density and ETL material are optimized for best performance of the HTL-free structure, giving Jsc = 26.48, Voc = 0.948 V, FF = 77.20 and PCE = 19.37% for AM1.5 solar spectra. Such results highlight the prospective of the proposed structure and emphasize the importance of using HTL-free solar cells without deteriorating the efficiency. The solar cell is investigated by using SCAPS simulator.
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31
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Wu G, Dong X, Xiu J, Yu Y, Gu M, Tang TB, Zuo Z, Liu Y, Cui G. Water and oxygen co-induced microstructure relaxation and evolution in CH 3NH 3PbI 3. Phys Chem Chem Phys 2021; 23:17242-17247. [PMID: 34373879 DOI: 10.1039/d1cp02704b] [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
Owing to perovskite possessing the outstanding optoelectronic properties, perovskite-based solar cells show prominent performance. The stability of perovskite-based solar cells hampers the progress of commercialization, so it is important to understand the microstructure mechanism of perovskite degradation under the humidity and oxygen environmental conditions. In this study, a meaningful Debye-type dielectric relaxation was observed under water vapor and oxygen co-treatment conditions. Interestingly, the relaxation was not observed under water vapor or oxygen treatment individually. This new dielectric relaxation is identified as a direct result of dipole jump, and its activation energy was measured to be 630 ± 6 meV. According to photoelectron spectroscopy and 13C nuclear magnetic resonance data, we suggest that the dipoles are formed by CH3NH3+ (MA+) and superoxide (O2-), which originate from the distorted crystal lattice and water vapor-weakened hydrogen bonds of Pb-I cages. In addition, the activation energy fitted by dielectric relaxation might be the energy of ion migration. This study contributes to understanding the mechanism of perovskite degradation from the view of microstructure relaxation and evolution, and also provides a method for the analysis of ion migration energy.
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Affiliation(s)
- Guangcheng Wu
- Anhui Province Key Laboratory of Optoelectric Materials Science and Technology, School of Physics and Electronics Information, Key Laboratory of Functional Molecular Solids of Ministry of Education, Anhui Normal University, Wuhu, 241002, China.
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32
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Wei JH, Liao JF, Zhou L, Luo JB, Wang XD, Kuang DB. Indium-antimony-halide single crystals for high-efficiency white-light emission and anti-counterfeiting. SCIENCE ADVANCES 2021; 7:7/34/eabg3989. [PMID: 34417176 PMCID: PMC8378825 DOI: 10.1126/sciadv.abg3989] [Citation(s) in RCA: 74] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 07/01/2021] [Indexed: 05/03/2023]
Abstract
Although single-source white emissive perovskite has emerged as a class of encouraging light-emitting material, the synthesis of lead-free halide perovskite materials with high luminous efficiency is still challenging. Here, we report a series of zero-dimensional indium-antimony (In/Sb) alloyed halide single crystals, BAPPIn2-2x Sb2x Cl10 (BAPP = C10H28N4, x = 0 to 1), with tunable emission. In BAPPIn1.996Sb0.004Cl10, bright yellow emission with near 100% photoluminescence quantum yield (PLQY) is yielded when it was excited at 320 nm, which turns into bright white-light emission with a PLQY of 44.0% when excited at 365 nm. Combined spectroscopy and theoretical studies reveal that the BAPP4+-associated blue emission and inorganic polyhedron-afforded orange emission function as a perfect pair of complementary colors affording white light in BAPPIn1.996Sb0.004Cl10 Moreover, the interesting afterglow behavior, together with excitation-dependent emission property, makes BAPPIn2-2x Sb2x Cl10 as high-performance anti-counterfeiting/information storage materials.
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Affiliation(s)
- Jun-Hua Wei
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Jin-Feng Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Lei Zhou
- School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, People's Republic of China
| | - Jian-Bin Luo
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Xu-Dong Wang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, People's Republic of China
| | - Dai-Bin Kuang
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry, Lehn Institute of Functional Materials, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, People's Republic of China.
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33
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Xie L, Xie J, Wang S, Chen B, Yang C, Wang Z, Liu X, Chen J, Jia K, Hao F. Fluorinated Oligomer Wrapped Perovskite Crystals for Inverted MAPbI 3 Solar Cells with 21% Efficiency and Enhanced Stability. ACS APPLIED MATERIALS & INTERFACES 2021; 13:26093-26101. [PMID: 34053218 DOI: 10.1021/acsami.1c06216] [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
Defects at the grain boundary provide sites for nonradiative recombination in halide perovskite solar cells (PSCs). Here, by polymerization and fluorination of a Lewis acid of 4,4-bis(4-hydroxyphenyl)pentanoic acid, a fluorinated oligomer (FO-19) is synthesized and applied to passivate these defects in methlyammonium lead iodide (MAPbI3). It is demonstrated that the carboxyl bond of FO-19 was coordinated with Pb ions in the perovskite films to achieve a wrapping effect on the perovskite crystals. The defects of perovskite film are effectively passivated, and the undesirable nonradiative recombination is greatly inhibited. As a result, FO-19 gives a power conversion efficiency of 21.23% for the inverted MAPbI3-based PSCs, which is among the highest reported values in the literature. Meanwhile, the corresponding device with FO-19 exhibits significantly improved humidity and thermal stability. Therefore, this work offers insights into the realization of high-efficiency and stable PSCs through fluorinated additive engineering.
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Affiliation(s)
- Lisha Xie
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Junni Xie
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Shurong Wang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Bin Chen
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Chenguang Yang
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
- Faculty of Printing, Packaging and Digital Media Technology, Xi'an University of Technology, Xi'an 710048, Shanxi, P. R. China
| | - Zhen Wang
- Faculty of Printing, Packaging and Digital Media Technology, Xi'an University of Technology, Xi'an 710048, Shanxi, P. R. China
| | - Xiaobo Liu
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Jiangzhao Chen
- Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
| | - Kun Jia
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
| | - Feng Hao
- School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China
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Shi R, Han X, Xu J, Bu XH. Crystalline Porous Materials for Nonlinear Optics. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2006416. [PMID: 33734577 DOI: 10.1002/smll.202006416] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/11/2020] [Indexed: 06/12/2023]
Abstract
Crystalline porous materials have been extensively explored for wide applications in many fields including nonlinear optics (NLO) for frequency doubling, two-photon absorption/emission, optical limiting effect, photoelectric conversion, and biological imaging. The structural diversity and flexibility of the crystalline porous materials such as the metal-organic frameworks, covalent organic frameworks, and polyoxometalates provide numerous opportunities to orderly organize the dipolar chromophores and to systemically modify the type and concentration of these dipolar chromophores in the confined spaces, which are highly desirable for NLO. Here, the recent advances in the crystalline porous NLO materials are discussed. The second-order NLO of crystalline porous materials have been mainly devoted to the chiral and achiral structures, while the third-order NLO crystalline porous materials have been categorized into pure organic and hybrid organic/inorganic materials. Some representative properties and applications of these crystalline porous materials in the NLO regime are highlighted. The future perspective of challenges as well as the potential research directions of crystalline porous materials have been also proposed.
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Affiliation(s)
- Rongchao Shi
- School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tongyan Road 38, Tianjin, 300350, P. R. China
| | - Xiao Han
- School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tongyan Road 38, Tianjin, 300350, P. R. China
| | - Jialiang Xu
- School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tongyan Road 38, Tianjin, 300350, P. R. China
| | - Xian-He Bu
- School of Materials Science and Engineering, National Institute for Advanced Materials, Nankai University, Tongyan Road 38, Tianjin, 300350, P. R. China
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35
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Huang C, Fu J, Xiang M, Zhang J, Zeng H, Shao X. Single-Layer MoS 2 Grown on Atomically Flat SrTiO 3 Single Crystal for Enhanced Trionic Luminescence. ACS NANO 2021; 15:8610-8620. [PMID: 33949856 DOI: 10.1021/acsnano.1c00482] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The elaborate interface interactions can be critical in determining the achievable functionality of a semiconductor heterojunction (SH), particularly when two-dimensional material is enclosed in the system and its thickness is at an atomic extreme. In this work, we have successfully constructed a SH model system composed of typical transition-metal chalcogenide (TMDs) and transition metal oxides (TMO) by directly growing molybdenum sulfide (MoS2) nanosheets on atomically flat strontium titanate (SrTiO3) single crystal substrates through a conventional chemical vapor deposition (CVD) synthetic method. Multiple measurements have demonstrated the uniform monolayer thickness and single crystallinity of the MoS2 nanosheets as well as the atomic flatness of the heterojunction surface, both characterizing an extremely high quality of the interface. Clear evidence have been obtained for the electron transfer from the MoS2 adlayer to the SrTiO3 substrate which varies against the interface conditions. More importantly, the photoluminescence of MoS2 is significantly tailored, which is correlated with both the cleanness of the interface and the crystal orientation of the SrTiO3 substrate. These results not only shed fresh lights on the structure-property relationship of the TMDs/TMO heterostructures but also manifest the importance of the ideal interface structure for a hybridized system.
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Zhang C, He Z, Luo X, Meng R, Chen M, Lu H, Yang Y. Effects of CsSn xPb 1-xI 3 Quantum Dots as Interfacial Layer on Photovoltaic Performance of Carbon-Based Perovskite Solar Cells. NANOSCALE RESEARCH LETTERS 2021; 16:74. [PMID: 33928451 PMCID: PMC8085196 DOI: 10.1186/s11671-021-03533-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 04/19/2021] [Indexed: 05/30/2023]
Abstract
In this work, inorganic tin-doped perovskite quantum dots (PQDs) are incorporated into carbon-based perovskite solar cells (PSCs) to improve their photovoltaic performance. On the one hand, by controlling the content of Sn2+ doping, the energy level of the tin-doped PQDs can be adjusted, to realize optimized band alignment and enhanced separation of photogenerated electron-hole pairs. On the other hand, the incorporation of tin-doped PQDs provided with a relatively high acceptor concentration due to the self-p-type doping effect is able to reduce the width of the depletion region near the back surface of the perovskite, thereby enhancing the hole extraction. Particularly, after the addition of CsSn0.2Pb0.8I3 quantum dots (QDs), improvement of the power conversion efficiency (PCE) from 12.80 to 14.22% can be obtained, in comparison with the pristine device. Moreover, the experimental results are analyzed through the simulation of the one-dimensional perovskite/tin-doped PQDs heterojunction.
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Affiliation(s)
- Chi Zhang
- Department of Physics, School of Science, Wuhan University of Technology, Wuhan, 430070, People's Republic of China
| | - Zhiyuan He
- Department of Physics, School of Science, Wuhan University of Technology, Wuhan, 430070, People's Republic of China
| | - Xuanhui Luo
- Department of Physics, School of Science, Wuhan University of Technology, Wuhan, 430070, People's Republic of China
| | - Rangwei Meng
- Department of Physics, School of Science, Wuhan University of Technology, Wuhan, 430070, People's Republic of China
| | - Mengwei Chen
- Department of Physics, School of Science, Wuhan University of Technology, Wuhan, 430070, People's Republic of China
| | - Haifei Lu
- Department of Physics, School of Science, Wuhan University of Technology, Wuhan, 430070, People's Republic of China
| | - Yingping Yang
- Department of Physics, School of Science, Wuhan University of Technology, Wuhan, 430070, People's Republic of China.
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Hu X, Meng X, Yang X, Huang Z, Xing Z, Li P, Tan L, Su M, Li F, Chen Y, Song Y. Cementitious grain-boundary passivation for flexible perovskite solar cells with superior environmental stability and mechanical robustness. Sci Bull (Beijing) 2021; 66:527-535. [PMID: 36654422 DOI: 10.1016/j.scib.2020.10.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 09/25/2020] [Accepted: 10/19/2020] [Indexed: 01/20/2023]
Abstract
The power conversion effciency (PCE) of flexible perovskite solar cells (PSCs) has increased rapidly, while the mechanical flexibility and environmental stability are still far from satisfactory. Previous studies show the environmental degradation and ductile cracks of perovskite films usually begin at the grain boundaries (GBs). Herein, sulfonated graphene oxide (s-GO) is employed to construct a cementitious GBs by interacting with the [PbI6]4- at GBs. The resultant s-GO-[PbI6]4- complex can effectively passivate the defects of vacant iodine, and the devices with s-GO exhibit remarkable waterproofness and flexibility due to the tough and water-insoluble GBs. The champion PCE of 20.56% (1.01 cm2) in a device treated with s-GO is achieved. This device retains 90% of its original PCE after 180 d stored in the ambient condition, as well as over 80% retention after 10,000 bending cycles at a curvature radius of 3 mm.
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Affiliation(s)
- Xiaotian Hu
- College of Chemistry/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, Nanchang 330031, China
| | - Xiangchuan Meng
- College of Chemistry/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, Nanchang 330031, China
| | - Xia Yang
- Department of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
| | - Zengqi Huang
- Key Laboratory of Green Printing, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
| | - Zhi Xing
- College of Chemistry/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, Nanchang 330031, China
| | - Pengwei Li
- Key Laboratory of Green Printing, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
| | - Licheng Tan
- College of Chemistry/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, Nanchang 330031, China
| | - Meng Su
- Key Laboratory of Green Printing, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
| | - Fengyu Li
- Key Laboratory of Green Printing, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China
| | - Yiwang Chen
- College of Chemistry/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, Nanchang 330031, China; Institute of Advanced Scientific Research (iASR), Jiangxi Normal University, Nanchang 330022, China.
| | - Yanlin Song
- Key Laboratory of Green Printing, Institute of Chemistry Chinese Academy of Sciences, Beijing 100190, China.
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Mohamad Noh MF, Arzaee NA, Nawas Mumthas IN, Fahsyar PNA, Ramli NF, Mohamed NA, Mohd Nasir SNF, Mohd Yusoff AR, Ibrahim MA, Mat Teridi MA. Motion-dispensing as an effective strategy for preparing efficient high-humidity processed perovskite solar cells. JOURNAL OF ALLOYS AND COMPOUNDS 2021; 854:157320. [DOI: 10.1016/j.jallcom.2020.157320] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
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Chakraborty R, Nag A. Dielectric confinement for designing compositions and optoelectronic properties of 2D layered hybrid perovskites. Phys Chem Chem Phys 2021; 23:82-93. [PMID: 33325476 DOI: 10.1039/d0cp04682e] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Two dimensional (2D) layered hybrid lead halide perovskites are a fascinating class of semiconductors displaying a plethora of interesting optoelectronic properties with potential for application in solar cells, light emitting diodes, etc. Most of these properties can be linked to their repeating quantum well-like structures providing 2D excitons. In this perspective, we discuss how dielectric confinement of excitons originates in these layered hybrid perovskites, and then, how it can be used to tune the excitonic properties. In particular, we discuss the recent theoretical and experimental advances correlating dielectric confinement with chemical composition, excitonic binding energy, and optoelectronic property. The freedom from the restrictions of the Goldsmith tolerance factor allows the synthesis of hundreds of compositions of 2D layered hybrid perovskites by independently varying the organic and inorganic layers. We envisage that the combination of this compositional flexibility with the concepts of dielectric confinement discussed in this perspective would be a path forward for designing novel optoelectronic materials.
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Affiliation(s)
- Rayan Chakraborty
- Department of Chemistry, Indian Institute of Science Education and Research (IISER), Pune, 411008, India.
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40
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He Z, Meng F, Li L, Gao L, Ma T. Organic ammonium salt-assisted pinhole-free CuSCN films for carbon-based perovskite solar cells. NEW J CHEM 2021. [DOI: 10.1039/d1nj04068e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organic ammonium salt, PEAI, has been utilized as additive in CuSCN film of C-PSCs. It not only eliminated the pinhole, but also passivated the perovskite film and enhanced the interfacial connection, resulting in a 11% PCE improvement.
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Affiliation(s)
- Zhen He
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
| | - Fanning Meng
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
| | - Lianjie Li
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
| | - Liguo Gao
- State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116023, China
| | - Tingli Ma
- Department of Materials Science and Engineering, China Jiliang University, Hangzhou, 310018, P. R. China
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Kitakyushu, Fukuoka 808-0196, Japan
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41
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Chen C, Zheng S, Song H. Photon management to reduce energy loss in perovskite solar cells. Chem Soc Rev 2021; 50:7250-7329. [PMID: 33977928 DOI: 10.1039/d0cs01488e] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Despite the rapid development of perovskite solar cells (PSCs) over the past few years, the conversion of solar energy into electricity is not efficient enough or cost-competitive yet. The principal energy loss in the conversion of solar energy to electricity fundamentally originates from the non-absorption of low-energy photons ascribed to Shockley-Queisser limits and thermalization losses of high-energy photons. Enhancing the light-harvesting efficiency of the perovskite photoactive layer by developing efficient photo management strategies with functional materials and arrays remains a long-standing challenge. Here, we briefly review the historical research trials and future research trends to overcome the fundamental loss mechanisms in PSCs, including upconversion, downconversion, scattering, tandem/graded structures, texturing, anti-reflection, and luminescent solar concentrators. We will deeply emphasize the availability and analyze the importance of a fine device structure, fluorescence efficiency, material proportion, and integration position for performance improvement. The unique energy level structure arising from the 4fn inner shell configuration of the trivalent rare-earth ions gives multifarious options for efficient light-harvesting by upconversion and downconversion. Tandem or graded PSCs by combining a series of subcells with varying bandgaps seek to rectify the spectral mismatch. Plasmonic nanostructures function as a secondary light source to augment the light-trapping within the perovskite layer and carrier transporting layer, enabling enhanced carrier generation. Texturing the interior using controllable micro/nanoarrays can realize light-matter interactions. Anti-reflective coatings on the top glass cover of the PSCs bring about better transmission and glare reduction. Photon concentration through perovskite-based luminescent solar concentrators offers a path to increase efficiency at reduced cost and plays a role in building-integrated photovoltaics. Distinct from other published reviews, we here systematically and hierarchically present all of the photon management strategies in PSCs by presenting the theoretical possibilities and summarizing the experimental results, expecting to inspire future research in the field of photovoltaics, phototransistors, photoelectrochemical sensors, photocatalysis, and especially light-emitting diodes. We further assess the overall possibilities of the strategies based on ultimate efficiency prospects, material requirements, and developmental outlook.
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Affiliation(s)
- Cong Chen
- School of Material Science and Engineering, State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Dingzigu Road 1, Tianjin 300130, People's Republic of China. and State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, People's Republic of China.
| | - Shijian Zheng
- School of Material Science and Engineering, State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Dingzigu Road 1, Tianjin 300130, People's Republic of China.
| | - Hongwei Song
- State Key Laboratory of Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun, 130012, People's Republic of China.
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42
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Lin L, Li P, Kang Z, Xiong H, Chen Y, Yan Q, Jiang L, Qiu Y. Device Design of Doping‐Controlled Homojunction Perovskite Solar Cells Omitting HTL and Exceeding 25% Efficiency. ADVANCED THEORY AND SIMULATIONS 2020. [DOI: 10.1002/adts.202000222] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Lingyan Lin
- Key Laboratory of Green Perovskites Application of Fujian Province Universities Fujian Jiangxia University Fuzhou 350108 China
| | - Ping Li
- Key Laboratory of Green Perovskites Application of Fujian Province Universities Fujian Jiangxia University Fuzhou 350108 China
| | - Zhenjing Kang
- Key Laboratory of Green Perovskites Application of Fujian Province Universities Fujian Jiangxia University Fuzhou 350108 China
| | - Hao Xiong
- Key Laboratory of Green Perovskites Application of Fujian Province Universities Fujian Jiangxia University Fuzhou 350108 China
| | - Yiting Chen
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering Minjiang University Fuzhou 350108 China
- Ocean College Minjiang University Fuzhou 350108 China
| | - Qiong Yan
- Key Laboratory of Green Perovskites Application of Fujian Province Universities Fujian Jiangxia University Fuzhou 350108 China
| | - Linqin Jiang
- Key Laboratory of Green Perovskites Application of Fujian Province Universities Fujian Jiangxia University Fuzhou 350108 China
| | - Yu Qiu
- Key Laboratory of Green Perovskites Application of Fujian Province Universities Fujian Jiangxia University Fuzhou 350108 China
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43
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Effective charge separation through the sulfur vacancy interfacial in n-CdO/p-CdS bulk heterojunction particle and its solar-induced hydrogen production. J IND ENG CHEM 2020. [DOI: 10.1016/j.jiec.2020.07.049] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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44
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Wu W, Liao J, Zhong J, Xu Y, Wang L, Huang J. Suppressing Interfacial Charge Recombination in Electron‐Transport‐Layer‐Free Perovskite Solar Cells to Give an Efficiency Exceeding 21 %. Angew Chem Int Ed Engl 2020; 59:20980-20987. [DOI: 10.1002/anie.202005680] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Wu‐Qiang Wu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-sen University Guangzhou 510275 P. R. China
- Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland Brisbane QLD 4072 Australia
| | - Jin‐Feng Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-sen University Guangzhou 510275 P. R. China
| | - Jun‐Xing Zhong
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-sen University Guangzhou 510275 P. R. China
| | - Yang‐Fan Xu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-sen University Guangzhou 510275 P. R. China
| | - Lianzhou Wang
- Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland Brisbane QLD 4072 Australia
| | - Jinsong Huang
- Department of Applied Physical Sciences University of North Carolina Chapel Hill NC 27599 USA
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45
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Wu W, Liao J, Zhong J, Xu Y, Wang L, Huang J. Suppressing Interfacial Charge Recombination in Electron‐Transport‐Layer‐Free Perovskite Solar Cells to Give an Efficiency Exceeding 21 %. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202005680] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Wu‐Qiang Wu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-sen University Guangzhou 510275 P. R. China
- Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland Brisbane QLD 4072 Australia
| | - Jin‐Feng Liao
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-sen University Guangzhou 510275 P. R. China
| | - Jun‐Xing Zhong
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-sen University Guangzhou 510275 P. R. China
| | - Yang‐Fan Xu
- MOE Key Laboratory of Bioinorganic and Synthetic Chemistry Lehn Institute of Functional Materials School of Chemistry Sun Yat-sen University Guangzhou 510275 P. R. China
| | - Lianzhou Wang
- Nanomaterials Centre School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of Queensland Brisbane QLD 4072 Australia
| | - Jinsong Huang
- Department of Applied Physical Sciences University of North Carolina Chapel Hill NC 27599 USA
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46
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Gong S, Li H, Chen Z, Shou C, Huang M, Yang S. CsPbI 2Br Perovskite Solar Cells Based on Carbon Black-Containing Counter Electrodes. ACS APPLIED MATERIALS & INTERFACES 2020; 12:34882-34889. [PMID: 32657578 DOI: 10.1021/acsami.0c08006] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
CsPbI2Br perovskite solar cells (PSCs) based on carbon electrodes (CEs) are considered to be low-cost and thermally stable devices. Nevertheless, the insufficient contact and energy level mismatch between the CsPbI2Br layer and CE hinder the further enhancement of the cell efficiency. Herein, a carbon black (CB) interlayer was introduced between the perovskite layer and CE. The hole extraction was facilitated due to the larger contact area and suitable energy band alignment in the CsPbI2Br/CB interface. Further investigation indicated the diffusion of CB nanoparticles from the CE or CB layer to the CsPbI2Br film after a certain period of time. We disclosed the formation of a CB-CsPbI2Br bulk heterojunction structure due to the carbon diffusion, which resulted in an efficiency enhancement. As a result, a record efficiency of 13.13% is achieved for carbon-based inorganic PSCs. This work also reveals that the diffusion of CB nanoparticles in CB-containing PSCs is universal and inevitable, although this kind of diffusion results in the enhancement of cell efficiency.
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Affiliation(s)
- Shuiping Gong
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 588 Heshuo Road, Shanghai 201899, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haiyan Li
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 588 Heshuo Road, Shanghai 201899, China
| | - Zongqi Chen
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 588 Heshuo Road, Shanghai 201899, China
| | - Chunhui Shou
- Key Laboratory of Solar Energy Utilization & Energy Saving Technology of Zhejiang Province, Zhejiang Energy Group R&D, Hangzhou, Zhejiang 310003, China
| | - Mianji Huang
- Key Laboratory of Solar Energy Utilization & Energy Saving Technology of Zhejiang Province, Zhejiang Energy Group R&D, Hangzhou, Zhejiang 310003, China
| | - Songwang Yang
- CAS Key Laboratory of Materials for Energy Conversion, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 588 Heshuo Road, Shanghai 201899, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
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Meng F, Li Y, Gao L, Liu A, Li Y, Wang T, Zhang C, Fan M, Wei G, Ma T. Intermediate-Controlled Interfacial Engineering for Stable and Highly Efficient Carbon-Based PSCs. ACS APPLIED MATERIALS & INTERFACES 2020; 12:34479-34486. [PMID: 32633128 DOI: 10.1021/acsami.0c11419] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A major bottleneck hindering the performance and commercial application of cost-effective carbon-based perovskite solar cells (C-PSCs) is the contact issue at the interface of the perovskite layer and the carbon counter electrode. Herein, a new approach of intermediate-controlled interfacial engineering (IIE) utilizing an ultra-low-cost acetylene black material is developed for the first time that can improve the interfacial contact of C-PSCs. We achieved both high efficiency (16.41%) without hole-transport materials and good stability as a result of the optimal heterogeneous interfacial contact. Devices without any encapsulation consistently exhibit excellent environmental stability, retaining 93% of their original efficiency by storing in an ambient atmosphere (30 °C, 30% RH) for 2000 h and achieving 81% of their original efficiency by storing in a terrible air environment (85 °C, 65% RH) for 312 h. In addition, to acquire a deep understanding of carrier transport, a comparison of heterogeneous interfaces fabricated using different methods has been undertaken. In C-PSCs fabricated by the IIE method, the lower radioactive recombination and faster carrier transfer result in a shorter carrier lifetime. We present a promising future for the industrialization of C-PSCs by reducing the costs and improving the performance.
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Affiliation(s)
- Fanning Meng
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, P. R. China
| | - Yang Li
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, P. R. China
| | - Liguo Gao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, P. R. China
| | - Anmin Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, P. R. China
| | - Yanqiang Li
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, P. R. China
| | - Tonghua Wang
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116023, P. R. China
| | - Chu Zhang
- Department of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, P. R. China
| | - Meiqiang Fan
- Department of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, P. R. China
| | - Guoying Wei
- Department of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, P. R. China
| | - Tingli Ma
- Department of Materials Science and Engineering, China Jiliang University, Hangzhou 310018, P. R. China
- Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Kitakyushu, Fukuoka 808-0196, Japan
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Wang H, Li H, Cai W, Zhang P, Cao S, Chen Z, Zang Z. Challenges and strategies relating to device function layers and their integration toward high-performance inorganic perovskite solar cells. NANOSCALE 2020; 12:14369-14404. [PMID: 32617550 DOI: 10.1039/d0nr03408h] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Parallel to the flourishing of inorganic-organic hybrid perovskite solar cells (PSCs), the development of inorganic cesium-based metal halide PSCs (CsPbX3) is accelerating, with power conversion efficiency (PCE) values of over 20% being obtained. Although CsPbX3 possesses numerous merits, such as superior thermal stability and great potential for use in tandem solar cells, severe challenges remain, such as its phase instability, trap state density, and absorption range limitations, hindering further performance improvements and commercialization. This review summarizes challenges and strategies relating to each device functional layer and their integration for the purposes of performance improvement and commercialization, utilizing the fundamental configuration of a perovskite photo-absorption layer, electron transport layer (ETL), and hole transport layer (HTL ). In detail, we first analyze comprehensively strategies for designing high-quality CsPbX3 perovskite films, including precursor engineering, element doping, and post-treatment, followed by discussing the precise control of the CsPbX3 film fabrication process. Then, we introduce and analyze the carrier dynamics and interfacial modifications of inorganic ETLs, such as TiO2, SnO2, ZnO, and other typical organic ETLs with p-i-n configuration. The pros and cons of inorganic and organic HTLs are then discussed from the viewpoints of stability and band structure. Subsequently, promising candidates, i.e., HTL-free carbon-electrode-based inorganic CsPbX3 PSCs, that meet the "golden triangle" criteria used by the PSC community are reviewed, followed by discussion of other obstacles, such as hysteresis and large-scale fabrication, that lie on the road toward PSC commercialization. Finally, some perspectives relating to solutions to development bottlenecks are proposed, with the attempt to gain insight into CsPbX3 PSCs and inspire future research prospects.
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Affiliation(s)
- Huaxin Wang
- Key Laboratory of Optoelectronic Technology & Systems (Ministry of Education), Chongqing University, Chongqing 400044, China.
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Xie X, Liu X, Zeng D, Zhao L. The Potentials in Solar Cells for
MEH‐PPV
Derivatives: Molecular Design and Performance Prediction. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.12059] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaohua Xie
- Environmental School of Green and IntelligenceYangtze Normal University Chongqing 408100 People's Republic of China
| | - Xu Liu
- Environmental School of Green and IntelligenceYangtze Normal University Chongqing 408100 People's Republic of China
| | - Dan Zeng
- Environmental School of Green and IntelligenceYangtze Normal University Chongqing 408100 People's Republic of China
| | - Longfeng Zhao
- Environmental School of Green and IntelligenceYangtze Normal University Chongqing 408100 People's Republic of China
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50
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Wu WQ, Rudd PN, Wang Q, Yang Z, Huang J. Blading Phase-Pure Formamidinium-Alloyed Perovskites for High-Efficiency Solar Cells with Low Photovoltage Deficit and Improved Stability. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2000995. [PMID: 32468688 DOI: 10.1002/adma.202000995] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 04/11/2020] [Indexed: 05/05/2023]
Abstract
Currently, blade-coated perovskite solar cells (PSCs) with high power conversion efficiencies (PCEs), that is, greater than 20%, normally employ methylammonium lead tri-iodide with a sub-optimal bandgap. Alloyed perovskites with formamidinium (FA) cation have narrower bandgap and thus enhance device photocurrent. However, FA-alloyed perovskites show low phase stability and high moisture sensitivity. Here, it is reported that incorporating 0.83 molar percent organic halide salts (OHs) into perovskite inks enables phase-pure, highly crystalline FA-alloyed perovskites with extraordinary optoelectronic properties. The OH molecules modulate the crystal growth, enhance the phase stability, passivate ionic defects at the surface and/or grain boundaries, and enhance the moisture stability of the perovskite film. A high efficiency of 22.0% under 1 sun illumination for blade-coated PSCs is demonstrated with an open-circuit voltage of 1.18 V, corresponding to a very small voltage deficit of 0.33 V, and significantly improved operational stability with 96% of the initial efficiency retained under one sun illumination for 500 h.
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Affiliation(s)
- Wu-Qiang Wu
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
- Nanomaterials Centre, School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Peter N Rudd
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Qi Wang
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Zhibin Yang
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Jinsong Huang
- Department of Applied Physical Sciences, University of North Carolina, Chapel Hill, NC, 27599, USA
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