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Yang W, Shi R, Lu H, Liu K, Yan Q, Bai Y, Ding X, Li H, Gao Z. Revisiting the thermal decomposition mechanism of MAPbI 3. Phys Chem Chem Phys 2024; 26:17999-18005. [PMID: 38894597 DOI: 10.1039/d4cp01318b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
The thermal stability of MAPbI3 poses a challenge for the industry. To overcome this limitation, a thorough investigation of MAPbI3 is necessary. In this work, thermal gravimetric analysis (TGA) and Fourier transform infrared (FTIR) spectroscopy were conducted to identify the thermal decomposition products of MAPbI3, which were found to be CH3I, NH3, and PbI2. In situ X-ray diffraction (XRD) measurements were then performed in the temperature range from 300 to 700 K, which revealed the significant decomposition of the (110), (220), and (310) surfaces of MAPbI3 between 550 and 600 K. Density functional theory (DFT) calculations demonstrated that the (220) surface exhibited the highest stability. Additionally, the transition states of thermal decomposition showed that the energy barrier for the decomposition of the (110) surface was 2.07 eV. Our combined experimental and theoretical results provide a better understanding of the thermal decomposition mechanism of MAPbI3, providing valuable theoretical support for the design of long-term stable devices.
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Affiliation(s)
- Weijie Yang
- Department of Power Engineering, North China Electric Power University, Baoding 071003, Hebei, China.
- Hebei Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China
- Baoding Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China
| | - Ruiyang Shi
- Department of Power Engineering, North China Electric Power University, Baoding 071003, Hebei, China.
- Hebei Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China
- Baoding Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China
| | - Huan Lu
- Department of Power Engineering, North China Electric Power University, Baoding 071003, Hebei, China.
- Hebei Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China
- Baoding Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China
| | - Kailong Liu
- Department of Power Engineering, North China Electric Power University, Baoding 071003, Hebei, China.
- Hebei Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China
- Baoding Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China
| | - Qingqi Yan
- Department of Power Engineering, North China Electric Power University, Baoding 071003, Hebei, China.
- Hebei Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China
- Baoding Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China
| | - Yang Bai
- Department of Power Engineering, North China Electric Power University, Baoding 071003, Hebei, China.
- Hebei Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China
- Baoding Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China
| | - Xunlei Ding
- Institute of Clusters and Low Dimensional Nanomaterials, School of Mathematics and Physics, North China Electric Power University, Beijing 102206, P. R. China
- Hebei Key Laboratory of Physics and Energy Technology, North China Electric Power University, Baoding 071000, Hebei, P. R. China
| | - Hao Li
- Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577, Japan.
| | - Zhengyang Gao
- Department of Power Engineering, North China Electric Power University, Baoding 071003, Hebei, China.
- Hebei Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China
- Baoding Key Laboratory of Low Carbon and High-Efficiency Power Generation Technology, North China Electric Power University, Baoding 071003, Hebei, China
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2
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Wei S, Xia X, Bi S, Hu S, Wu X, Hsu HY, Zou X, Huang K, Zhang DW, Sun Q, Bard AJ, Yu ET, Ji L. Metal-insulator-semiconductor photoelectrodes for enhanced photoelectrochemical water splitting. Chem Soc Rev 2024; 53:6860-6916. [PMID: 38833171 DOI: 10.1039/d3cs00820g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Photoelectrochemical (PEC) water splitting provides a scalable and integrated platform to harness renewable solar energy for green hydrogen production. The practical implementation of PEC systems hinges on addressing three critical challenges: enhancing energy conversion efficiency, ensuring long-term stability, and achieving economic viability. Metal-insulator-semiconductor (MIS) heterojunction photoelectrodes have gained significant attention over the last decade for their ability to efficiently segregate photogenerated carriers and mitigate corrosion-induced semiconductor degradation. This review discusses the structural composition and interfacial intricacies of MIS photoelectrodes tailored for PEC water splitting. The application of MIS heterostructures across various semiconductor light-absorbing layers, including traditional photovoltaic-grade semiconductors, metal oxides, and emerging materials, is presented first. Subsequently, this review elucidates the reaction mechanisms and respective merits of vacuum and non-vacuum deposition techniques in the fabrication of the insulator layers. In the context of the metal layers, this review extends beyond the conventional scope, not only by introducing metal-based cocatalysts, but also by exploring the latest advancements in molecular and single-atom catalysts integrated within MIS photoelectrodes. Furthermore, a systematic summary of carrier transfer mechanisms and interface design principles of MIS photoelectrodes is presented, which are pivotal for optimizing energy band alignment and enhancing solar-to-chemical conversion efficiency within the PEC system. Finally, this review explores innovative derivative configurations of MIS photoelectrodes, including back-illuminated MIS photoelectrodes, inverted MIS photoelectrodes, tandem MIS photoelectrodes, and monolithically integrated wireless MIS photoelectrodes. These novel architectures address the limitations of traditional MIS structures by effectively coupling different functional modules, minimizing optical and ohmic losses, and mitigating recombination losses.
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Affiliation(s)
- Shice Wei
- School of Microelectronics & Jiashan Fudan Institute, Fudan University, Shanghai 200433, China.
| | - Xuewen Xia
- School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China.
| | - Shuai Bi
- Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, China
| | - Shen Hu
- School of Microelectronics & Jiashan Fudan Institute, Fudan University, Shanghai 200433, China.
| | - Xuefeng Wu
- School of Microelectronics & Jiashan Fudan Institute, Fudan University, Shanghai 200433, China.
| | - Hsien-Yi Hsu
- Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Kowloon, Hong Kong 999077, China
| | - Xingli Zou
- School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China.
| | - Kai Huang
- Department of Physics, Xiamen University, Xiamen 361005, China.
| | - David W Zhang
- School of Microelectronics & Jiashan Fudan Institute, Fudan University, Shanghai 200433, China.
| | - Qinqqing Sun
- School of Microelectronics & Jiashan Fudan Institute, Fudan University, Shanghai 200433, China.
| | - Allen J Bard
- Department of Chemistry, The University of Texas at Austin, Texas 78713, USA
| | - Edward T Yu
- Department of Electrical and Computer Engineering, The University of Texas at Austin, Texas 78758, USA.
| | - Li Ji
- School of Microelectronics & Jiashan Fudan Institute, Fudan University, Shanghai 200433, China.
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3
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Zhang Y, Huang J, Zhu M, Zhang Z, Nie K, Wang Z, Liao X, Shu L, Tian T, Wang Z, Lu Y, Fei L. Significant hydrogen generation via photo-mechanical coupling in flexible methylammonium lead iodide nanowires. Chem Sci 2024; 15:1782-1788. [PMID: 38303930 PMCID: PMC10829025 DOI: 10.1039/d3sc05434a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Accepted: 12/21/2023] [Indexed: 02/03/2024] Open
Abstract
The flexoelectric effect, which refers to the mechanical-electric coupling between strain gradient and charge polarization, should be considered for use in charge production for catalytically driving chemical reactions. We have previously revealed that halide perovskites can generate orders of higher magnitude flexoelectricity under the illumination of light than in the dark. In this study, we report the catalytic hydrogen production by photo-mechanical coupling involving the photoflexoelectric effect of flexible methylammonium lead iodide (MAPbI3) nanowires (NWs) in hydrogen iodide solution. Upon concurrent light illumination and mechanical vibration, large strain gradients were introduced in flexible MAPbI3 NWs, which subsequently induced significant hydrogen generation (at a rate of 756.5 μmol g-1 h-1, surpassing those values from either photo- or piezocatalysis of MAPbI3 nanoparticles). This photo-mechanical coupling strategy of mechanocatalysis, which enables the simultaneous utilization of multiple energy sources, provides a potentially new mechanism in mechanochemistry for highly efficient hydrogen production.
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Affiliation(s)
- Yucheng Zhang
- School of Physics and Materials Science, Nanchang University Nanchang 330031 China
| | - Jiawei Huang
- School of Physics and Materials Science, Nanchang University Nanchang 330031 China
| | - Mengya Zhu
- Department of Mechanical Engineering, City University of Hong Kong Kowloon Hong Kong SAR China
| | - Zhouyang Zhang
- Department of Mechanical Engineering, City University of Hong Kong Kowloon Hong Kong SAR China
| | - Kaiqi Nie
- Institute of High Energy Physics, Chinese Academy of Sciences Beijing 100049 China
| | - Zhiguo Wang
- School of Physics and Materials Science, Nanchang University Nanchang 330031 China
| | - Xiaxia Liao
- School of Physics and Materials Science, Nanchang University Nanchang 330031 China
| | - Longlong Shu
- School of Physics and Materials Science, Nanchang University Nanchang 330031 China
| | - Tingfang Tian
- School of Physics and Materials Science, Nanchang University Nanchang 330031 China
| | - Zhao Wang
- Hubei Key Laboratory of Micro- & Nano electronic Materials and Devices, School of Microelectronics, Hubei University Wuhan 430062 China
| | - Yang Lu
- Department of Mechanical Engineering, The University of Hong Kong Hong Kong SAR China
| | - Linfeng Fei
- School of Physics and Materials Science, Nanchang University Nanchang 330031 China
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Hong Z, Quan H, Ke C, Ouyang Z, Cheng B. Controllably modulated asymmetrical photoresponse with a nonvolatile memory effect in a single CH 3NH 3PbI 3 micro/nanowire for photorectifiers and photomemory. NANOSCALE 2023; 15:13359-13370. [PMID: 37527151 DOI: 10.1039/d3nr01921g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/03/2023]
Abstract
Nanostructured hybrid organic-inorganic perovskites exhibit remarkable photodetection performance due to their abundant surface states and high responsivity to visible light. However, in traditional photodetectors with a symmetrical configuration of two-terminal electrodes, the photoresponse is independent of bias polarity. Moreover, for self-powered photodetectors, an asymmetric structure of the chemical composition, such as p-n and Schottky junctions, and two different electrodes are necessary. Herein, we demonstrate a modulable asymmetrical photoresponse by packing only one electrode end in a single CH3NH3PbI3 micro/nanowire with two symmetrical Ag electrodes. This not only enables the high performance of light- and bias-modulated multifunctional photorectifiers and self-powered photodetectors, but also allows controllable implementation of nonvolatile photomemory with a tunable spectral responsivity and range. At an unpacked electrode interface, trace moisture in the environment promotes a good bonding of Ag+ and I-, substantially decreasing the interface barrier. Conversely, at a packed electrode interface, abundant surface states can be well preserved, leading to a high interface barrier. Notably, under a large voltage and strong light, the redox of Ag/AgI at the unpacked electrode interface and the injection and ejection of holes at the packed electrode interface can be reversibly conducted by inverting the voltage polarity, enabling a controllable nonvolatile modulation. Therefore, by clarifying the actual origin of the photoelectrical response of CH3NH3PbI3 micro/nanowires at electrode interfaces, high-performance multifunctional photorectifiers and self-powered photodetectors based on asymmetrical interface photovoltaic effects with two symmetrical electrodes can be controllably realized. Furthermore, by precise cooperative modulation of two electrode interface states with a large voltage and strong illumination, nonvolatile photomemory with a tunable spectral responsivity and range can be implemented.
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Affiliation(s)
- Zhen Hong
- School of Materials Science and Engineering, Nanchang Hangkong University, Jiangxi 330063, P. R. China
| | - Hongying Quan
- School of Materials Science and Engineering, Nanchang Hangkong University, Jiangxi 330063, P. R. China
| | - Changying Ke
- School of Environment and Energy, Jiangxi Modern Polytechnic College, Jiang Xi 330095, P. R. China
| | - Zhiyong Ouyang
- Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Jiangxi 330031, P. R. China.
| | - Baochang Cheng
- Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Jiangxi 330031, P. R. China.
- School of Materials Science and Engineering, Nanchang University, Jiangxi 330031, P. R. China
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5
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Metcalf I, Sidhik S, Zhang H, Agrawal A, Persaud J, Hou J, Even J, Mohite AD. Synergy of 3D and 2D Perovskites for Durable, Efficient Solar Cells and Beyond. Chem Rev 2023; 123:9565-9652. [PMID: 37428563 DOI: 10.1021/acs.chemrev.3c00214] [Citation(s) in RCA: 24] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
Three-dimensional (3D) organic-inorganic lead halide perovskites have emerged in the past few years as a promising material for low-cost, high-efficiency optoelectronic devices. Spurred by this recent interest, several subclasses of halide perovskites such as two-dimensional (2D) halide perovskites have begun to play a significant role in advancing the fundamental understanding of the structural, chemical, and physical properties of halide perovskites, which are technologically relevant. While the chemistry of these 2D materials is similar to that of the 3D halide perovskites, their layered structure with a hybrid organic-inorganic interface induces new emergent properties that can significantly or sometimes subtly be important. Synergistic properties can be realized in systems that combine different materials exhibiting different dimensionalities by exploiting their intrinsic compatibility. In many cases, the weaknesses of each material can be alleviated in heteroarchitectures. For example, 3D-2D halide perovskites can demonstrate novel behavior that neither material would be capable of separately. This review describes how the structural differences between 3D halide perovskites and 2D halide perovskites give rise to their disparate materials properties, discusses strategies for realizing mixed-dimensional systems of various architectures through solution-processing techniques, and presents a comprehensive outlook for the use of 3D-2D systems in solar cells. Finally, we investigate applications of 3D-2D systems beyond photovoltaics and offer our perspective on mixed-dimensional perovskite systems as semiconductor materials with unrivaled tunability, efficiency, and technologically relevant durability.
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Affiliation(s)
- Isaac Metcalf
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Siraj Sidhik
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Hao Zhang
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
- Applied Physics Graduate Program, Smalley-Curl Institute, Rice University, Houston, Texas 77005, United States
| | - Ayush Agrawal
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Jessica Persaud
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
| | - Jin Hou
- Department of Materials Science and NanoEngineering, Rice University, Houston, Texas 77005, United States
| | - Jacky Even
- Université de Rennes, INSA Rennes, CNRS, Institut FOTON - UMR 6082, 35708 Rennes, France
| | - Aditya D Mohite
- Department of Chemical and Biomolecular Engineering, Rice University, Houston, Texas 77005, United States
- Applied Physics Graduate Program, Smalley-Curl Institute, Rice University, Houston, Texas 77005, United States
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6
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Ma C, Eickemeyer FT, Lee SH, Kang DH, Kwon SJ, Grätzel M, Park NG. Unveiling facet-dependent degradation and facet engineering for stable perovskite solar cells. Science 2023; 379:173-178. [PMID: 36634188 DOI: 10.1126/science.adf3349] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A myriad of studies and strategies have already been devoted to improving the stability of perovskite films; however, the role of the different perovskite crystal facets in stability is still unknown. Here, we reveal the underlying mechanisms of facet-dependent degradation of formamidinium lead iodide (FAPbI3) films. We show that the (100) facet is substantially more vulnerable to moisture-induced degradation than the (111) facet. With combined experimental and theoretical studies, the degradation mechanisms are revealed; a strong water adhesion following an elongated lead-iodine (Pb-I) bond distance is observed, which leads to a δ-phase transition on the (100) facet. Through engineering, a higher surface fraction of the (111) facet can be achieved, and the (111)-dominated crystalline FAPbI3 films show exceptional stability against moisture. Our findings elucidate unknown facet-dependent degradation mechanisms and kinetics.
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Affiliation(s)
- Chunqing Ma
- School of Chemical Engineering and Center for Antibonding Regulated Crystals, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Felix T Eickemeyer
- Laboratory of Photonics and Interfaces, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Sun-Ho Lee
- School of Chemical Engineering and Center for Antibonding Regulated Crystals, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Dong-Ho Kang
- School of Chemical Engineering and Center for Antibonding Regulated Crystals, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Seok Joon Kwon
- School of Chemical Engineering, Sungkyunkwan University, Suwon 16419, Republic of Korea.,SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Michael Grätzel
- Laboratory of Photonics and Interfaces, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.,SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Nam-Gyu Park
- School of Chemical Engineering and Center for Antibonding Regulated Crystals, Sungkyunkwan University, Suwon 16419, Republic of Korea.,SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University, Suwon 16419, Republic of Korea
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7
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Aihemaiti N, Jiang Y, Zhu Y, Peng S. Light-Induced Phase Segregation Evolution of All-Inorganic Mixed Halide Perovskites. J Phys Chem Lett 2023; 14:267-272. [PMID: 36595354 DOI: 10.1021/acs.jpclett.2c03419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Light-induced phase segregation in mixed halide perovskites is a major roadblock for commercialization of optoelectronics utilizing these materials. We investigate the phenomenon in a model material system consisting of only surfaces and the bulk of a single-crystalline-like microplate. We utilize environmental in-situ time-dependent photoluminescence spectroscopy to observe the bandgap evolution of phase segregation under illumination. This enables analysis of the evolution of the iodide-rich phase composition as a function of the environment (i.e., surface defects) and carrier concentration. Our study provides microscopic insights into the relationship among photocarrier generations, surface structural defects, and subsequently iodide ion migrations that result in the complex evolution of phase segregation. We elucidate the significance of surface defects with respect to the evolution of phase segregation, which may provide new perspectives for modulating ion migration by engineering of defects and carrier concentrations.
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Affiliation(s)
- Nuerbiya Aihemaiti
- Zhejiang University, Hangzhou, Zhejiang310027, China
- School of Engineering, Westlake University, Hangzhou, Zhejiang310030, China
| | - Yifan Jiang
- School of Engineering, Westlake University, Hangzhou, Zhejiang310030, China
| | - Yizhou Zhu
- Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang310030, China
- School of Engineering, Westlake University, Hangzhou, Zhejiang310030, China
| | - Siying Peng
- Research Center for Industries of the Future, Westlake University, Hangzhou, Zhejiang310030, China
- School of Engineering, Westlake University, Hangzhou, Zhejiang310030, China
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8
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Park JG, Park SW, Hong KH. High-throughput screening of perovskite inspired bismuth halide materials: toward lead-free photovoltaic cells and light-emitting diodes. NANOTECHNOLOGY 2022; 33:485706. [PMID: 35952474 DOI: 10.1088/1361-6528/ac88db] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
Toxicity is the main bottleneck for the commercialization of Pb halide perovskites. Bi has been considered a promising metal cation to replace Pb because of its comparable electronic structures with Pb and better stability. Although experimental and theoretical studies have proposed various Bi-based halides, the present achievements in photovoltaic cells and other photoelectronic device fields do not compete with Pb analogs. Thermodynamic stability, bandgap control, and enhancement of carrier transport are fundamental challenges in the context of intrinsic material properties for developing highly efficient Bi-based devices. This study evaluates the potential of Bi-based halide compounds with good stability and electronic properties through high-throughput density functional theory calculations. Lattice structures and compositions are selected based on previous reports and an open material database. Then, we expanded our dataset to cover all possible compositional variations of A- and X-sites and alloying to B-sites. We examined over six-hundred candidates and found ten new candidates that have not been reported previously. Rb3SbBiI9exhibits the best-expected efficiency for high-efficiency solar cells among selected compounds, and other compounds can be used as visible-light-generation sources. Analysis of the screening procedure revealed that vacancy-ordered (A3B2X9)-type Bi-halides exhibit significantly favorable characteristics when compared with those of double perovskites and rudorffite-like structures for Bi-based photoelectronic devices.
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Affiliation(s)
- Jong-Goo Park
- Department of Materials Science and Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-Gu, Daejeon, 34158, Republic of Korea
| | - Sang Woo Park
- Department of Materials Science and Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-Gu, Daejeon, 34158, Republic of Korea
| | - Ki-Ha Hong
- Department of Materials Science and Engineering, Hanbat National University, 125 Dongseo-daero, Yuseong-Gu, Daejeon, 34158, Republic of Korea
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9
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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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10
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Huang JY, Yang YW, Hsu WH, Chang EW, Chen MH, Wu YR. Influences of dielectric constant and scan rate on hysteresis effect in perovskite solar cell with simulation and experimental analyses. Sci Rep 2022; 12:7927. [PMID: 35562539 PMCID: PMC9106723 DOI: 10.1038/s41598-022-11899-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 04/28/2022] [Indexed: 11/17/2022] Open
Abstract
In this work, perovskite solar cells (PSCs) with different transport layers were fabricated to understand the hysteresis phenomenon under a series of scan rates. The experimental results show that the hysteresis phenomenon would be affected by the dielectric constant of transport layers and scan rate significantly. To explain this, a modified Poisson and drift-diffusion solver coupled with a fully time-dependent ion migration model is developed to analyze how the ion migration affects the performance and hysteresis of PSCs. The modeling results show that the most crucial factor in the hysteresis behavior is the built-in electric field of the perovskite. The non-linear hysteresis curves are demonstrated under different scan rates, and the mechanism of the hysteresis behavior is explained. Additionally, other factors contributing to the degree of hysteresis are determined to be the degree of degradation in the perovskite material, the quality of the perovskite crystal, and the materials of the transport layer, which corresponds to the total ion density, carrier lifetime of perovskite, and the dielectric constant of the transport layer, respectively. Finally, it was found that the dielectric constant of the transport layer is a key factor affecting hysteresis in perovskite solar cells.
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Affiliation(s)
- Jun-Yu Huang
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - You-Wei Yang
- Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan
| | - Wei-Hsuan Hsu
- Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan
| | - En-Wen Chang
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Mei-Hsin Chen
- Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei, 10608, Taiwan
| | - Yuh-Renn Wu
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei, 10617, Taiwan.
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11
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Mat Yunin MYA, Mohd Adenam N, Khairul WM, Yusoff AH, Adli HK. Effect of Stability of Two-Dimensional (2D) Aminoethyl Methacrylate Perovskite Using Lead-Based Materials for Ammonia Gas Sensor Application. Polymers (Basel) 2022; 14:1853. [PMID: 35567022 PMCID: PMC9105985 DOI: 10.3390/polym14091853] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Revised: 04/25/2022] [Accepted: 04/27/2022] [Indexed: 11/16/2022] Open
Abstract
Changes in physical properties of (H2C=C(CH3)CO2CH2CH2NH3)2PbI2Cl2 and (H2C=C(CH3)CO2CH2CH2NH3)2Pb(NO3)2Cl2 (2D) perovskite materials from iodide-based (I-AMP) and nitrate-based (N-AMP) leads were investigated at different durations (days) for various storage conditions. UV-Vis spectra of both samples showed an absorption band of around λmax 420 nm due to the transition of n to π* of ethylene (C=C) and amine (NH2). XRD perovskite peaks could be observed at approximately 25.35° (I-AMP) and 23.1° (N-AMP). However, a major shift in I-AMP and dramatic changes in the crystallite size, FHWM and crystallinity percentage highlighted the instability of the iodide-based material. In contrast, N-AMP showed superior stability with 96.76% crystallinity even at D20 under the S condition. Both materials were exposed to ammonia (NH3) gas, and a new XRD peak of ammonium lead iodide (NH4PbI3) with a red-shifted perovskite peak (101) was observed for the case of I-AMP. Based on the FWHM, crystallite size, crystallinity and lattice strain analysis, it can be concluded N-AMP's stability was maintained even after a few days of exposure to the said gases. These novel nitrate-based lead perovskite materials exhibited great potential for stable perovskite 2D materials and recorded less toxicity compared to famous lead iodide (PbI2) material.
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Affiliation(s)
| | - Norfatihah Mohd Adenam
- Faculty of Bioengineering and Technology, Universiti Malaysia Kelantan, Jeli 17600, Malaysia; (M.Y.A.M.Y.); (N.M.A.)
| | - Wan M. Khairul
- Advanced Nano Materials (ANoMa) Research Group, Faculty of Science and Marine Environment, Universiti Malaysia Terengganu, Kuala Nerus 21030, Malaysia;
| | - Abdul Hafidz Yusoff
- Gold Rare Earth and Material Technopreneurship Centre (GREAT), Universiti Malaysia Kelantan, Jeli Campus, Jeli 17600, Malaysia
| | - Hasyiya Karimah Adli
- Institute for Artificial Intelligence and Big Data, Universiti Malaysia Kelantan, City Campus, Kota Bharu 16100, Malaysia
- Department of Data Science, Universiti Malaysia Kelantan, City Campus, Kota Bharu 16100, Malaysia
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12
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Abstract
Halide perovskites are considered to be next-generation semiconductor materials with bright prospects to advance the technology of photonics and optoelectronics. Because of the intrinsic ionic feature, the interactions between perovskites and water induce serious stability issues, which has been one of the fundamental problems hindering the practical application of perovskites. The degradation of halide perovskites upon water exposure has been intensively studied, resulting in chemical insights into key processes, including hydration, phase transformation, decomposition, and dissolution. In this Perspective, we try to illustrate what happens when halide perovskites meet with water. We summarize the research progress regarding the understanding of these processes and discuss the principle of strategy design toward improved stability against water. In addition to the instability-related interactions, we also discuss the aqueous solution of perovskite precursors for fabricating perovskite-based functional materials. Hopefully, this Perspective can inspire more fundamental studies on the interactions between perovskites and water, such as spectroscopy and simulation, crystal structure and material characterizations, and solution chemistry and crystallization.
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Affiliation(s)
- Shangjun Cheng
- MIIT Key Laboratory for Low Dimensional Quantum Structure and Devices, School of Materials Sciences & Engineering, Beijing Institute of Technology, 100081 Beijing, China
| | - Haizheng Zhong
- MIIT Key Laboratory for Low Dimensional Quantum Structure and Devices, School of Materials Sciences & Engineering, Beijing Institute of Technology, 100081 Beijing, China
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13
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Kotov VY, Buikin PA, Ilyukhin AB, Korlyukov AA, Ananyev IV, Gavrikov AV, Medvedev MG. Hybrid iodobismuthates code: adapting the geometry of Bi polyhedra to weak interactions. MENDELEEV COMMUNICATIONS 2021. [DOI: 10.1016/j.mencom.2021.03.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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14
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Mansour Rezaei Fumani N, Arabpour Roghabadi F, Alidaei M, Sadrameli SM, Ahmadi V, Najafi F. Prolonged Lifetime of Perovskite Solar Cells Using a Moisture-Blocked and Temperature-Controlled Encapsulation System Comprising a Phase Change Material as a Cooling Agent. ACS OMEGA 2020; 5:7106-7114. [PMID: 32280851 PMCID: PMC7143401 DOI: 10.1021/acsomega.9b03407] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 03/06/2020] [Indexed: 05/31/2023]
Abstract
Although the power conversion efficiency of perovskite solar cells (PSCs) reached up to 25% that made them comparable to the commercial solar cells, they are facing issues toward commercialization, especially their short lifetime. Remarkably, the most important key factors that regulate the durability of the devices are moisture, light, and heat. In this work, prolonging the device lifetime is focused by designing a flexible moisture-blocked and temperature-controlled encapsulation system. In this regard, a thermally adjusted phase change material is embedded in a polymer encapsulation layer to avoid the moisture diffusion, rapid temperature fluctuation, and undesired crystalline phase change of the perovskite layer in the PSCs under the operation condition. As a result, a 2 year stable device is achieved, whereas the reference device loses more than 50% of its performance after 10 days. Surprisingly, the charge transport resistance and recombination rate show no significant change during 450 days of storage, which confirms no increase in the defect density.
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Affiliation(s)
| | - Farzaneh Arabpour Roghabadi
- Faculty
of Chemical Engineering, Tarbiat Modares
University, Tehran 14117-13116, Iran
- Optoelectronic
and Nanophotonic Research Group, Faculty of Electrical and Computer
Engineering, Tarbiat Modares University, Tehran 14117-13116, Iran
| | - Maryam Alidaei
- Optoelectronic
and Nanophotonic Research Group, Faculty of Electrical and Computer
Engineering, Tarbiat Modares University, Tehran 14117-13116, Iran
| | | | - Vahid Ahmadi
- Optoelectronic
and Nanophotonic Research Group, Faculty of Electrical and Computer
Engineering, Tarbiat Modares University, Tehran 14117-13116, Iran
| | - Farhood Najafi
- Department
of Resin and Additives, Institute for Color
Science and Technology, Tehran 1668836471, Iran
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15
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Haque MA, Syed A, Akhtar FH, Shevate R, Singh S, Peinemann KV, Baran D, Wu T. Giant Humidity Effect on Hybrid Halide Perovskite Microstripes: Reversibility and Sensing Mechanism. ACS APPLIED MATERIALS & INTERFACES 2019; 11:29821-29829. [PMID: 31343861 DOI: 10.1021/acsami.9b07751] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Despite the exceptional performance of hybrid perovskites in photovoltaics, their susceptibility to ambient factors, particularly humidity, gives rise to the well-recognized stability issue. In the present work, microstripes of CH3NH3PbI3 are fabricated on flexible substrates, and they exhibit much larger response to relative humidity (RH) levels than continuous films and single crystals. The resistance of microstripes decreases by four orders of magnitude on changing the RH level from 10 to 95%. Fast response and recovery time of 100 and 500 ms, respectively, are recorded. Because bulk diffusion and defect trapping are much slower processes, our result indicates a surface-dictated mechanism related to hydrate formation and electron donation. In addition, water uptake behavior of perovskites is studied for the first time, which correlates well with the resistance decrease of the CH3NH3PbI3 microstripes. Furthermore, we report that the photoresponse decreases with increasing humidity, and at the 85% RH level, the perovskite device is not photoresponsive anymore. Our work underscores patterned structures as a new platform to investigate the interaction of hybrid perovskites with ambient factors and reveals the importance of the humidity effect on optoelectronic performance.
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Affiliation(s)
| | | | | | | | - Simrjit Singh
- School of Materials Science and Engineering , University of New South Wales , Sydney , New South Wales 2052 , Australia
| | | | | | - Tom Wu
- School of Materials Science and Engineering , University of New South Wales , Sydney , New South Wales 2052 , Australia
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16
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Chhillar P, Dhamaniya BP, Dutta V, Pathak SK. Recycling of Perovskite Films: Route toward Cost-Efficient and Environment-Friendly Perovskite Technology. ACS OMEGA 2019; 4:11880-11887. [PMID: 31460298 PMCID: PMC6682129 DOI: 10.1021/acsomega.9b01053] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2019] [Accepted: 06/21/2019] [Indexed: 05/30/2023]
Abstract
Mixed organic-inorganic halide perovskite solar cells have reached unprecedentedly high efficiency in a short term. Two major challenges in its large-scale deployment is the material instability and hazardous lead waste. Several studies have identified that lead replacement with its other alternatives does not show the similar assurance. In this manuscript, we introduce the concept of recycling of the degraded perovskite film (PbI2), gaining back the initial optoelectronic properties as the best possible solution to avoid lead waste. The simple recycling procedure allows the utilization of some of the most expensive (fluorine-doped tin oxide), primary energy-consuming (TiO2), and toxic (Pb) parts of the solar cell, reducing the payback time even further. This addresses the major issues of instability and expensive toxic lead disposal, altogether. We have demonstrated the comparative study of feasibility of recycling in degraded perovskite films deposited by three different standard fabrication routes. Films fabricated via acetate route shows efficient recycling compared to the other routes, i.e., chloride and sequential deposition routes. Moreover, recycling in sequentially deposited films needs further optimization.
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17
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Dhamaniya BP, Chhillar P, Roose B, Dutta V, Pathak SK. Unraveling the Effect of Crystal Structure on Degradation of Methylammonium Lead Halide Perovskite. ACS APPLIED MATERIALS & INTERFACES 2019; 11:22228-22239. [PMID: 31145848 DOI: 10.1021/acsami.9b00831] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Despite the remarkable efficiencies of perovskite solar cells, moisture instability has still been the major constraint in the technology deployment. Although, some research groups have discussed the possible mechanisms involved in the perovskite degradation, no broader understanding has been developed so far. Here, we demonstrate that the crystal orientation of perovskite film plays a major role in its degradation. We observed that the films fabricated via different routes led to different degradation behaviors and unraveled that diversity in the degradation rate arises due to the difference in crystallographic characteristics of the films. Using optical and electrical measurements, we show that the film prepared via a single-step (lead chloride precursor based) route undergoes a much faster degradation rate as compared with films prepared using single step (acetate precursor based) and two-step (or sequential deposition) routes. Although the resulting film is methylammonium lead iodide (MAPbI3) regardless of processing via different routes, their respective crystal orientation is different. In this manuscript, we correlate crystal orientation of MAPbI3 with their degradation pattern. Our studies also suggest a possible way to make stable perovskite film.
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Affiliation(s)
- Bhanu Pratap Dhamaniya
- Centre for Energy Studies , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
| | - Priyanka Chhillar
- Centre for Energy Studies , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
| | - Bart Roose
- Cavendish Laboratory , University of Cambridge , JJ Thomson Avenue , Cambridge CB30HE , U.K
| | - Viresh Dutta
- Centre for Energy Studies , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
| | - Sandeep K Pathak
- Centre for Energy Studies , Indian Institute of Technology Delhi , Hauz Khas , New Delhi 110016 , India
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18
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Kotov VY, Ilyukhin AB, Buikin PA, Simonenko NP, Korlyukov AA, Smol'yakov AF, Yorov KE, Gavrikov AV. Unexpected hydrolytic transformation of new type hybrid bromobismuthates with methylpyrazinium dications. Dalton Trans 2019; 48:7602-7611. [PMID: 31089663 DOI: 10.1039/c9dt01019j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of new type hybrid bromobismuthates formed by various pyrazinium cations were isolated and studied. In the systems initially containing iodide anions and monocations of substituted pyrazines, the complexes based on doubly charged cations of substituted pyrazines instead of ones based on the corresponding monocations were surprisingly formed. The variation of substituted pyrazinium cations affects not only the crystal structures of hybrid bromobismuthates via tuning the nuclearity of the anions but also the hydrolytic stability of the compounds. A thorough structural study of hydrolytic transformations was performed for halobismuthates for the first time. The results revealed a stepwise course of the process affording several products. Spectral studies of the complexes evidence that the values of optical band gaps (Eg) are low in comparison with those for similar systems which is most likely due to the cooperative effect involving the nature of the corresponding cations together with the features of the supramolecular structures of the complexes.
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Affiliation(s)
- Vitalii Yu Kotov
- National Research University Higher School of Economics, 101000, Moscow, Russian Federation.
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19
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Sinatra L, Lutfullin M, Mozo SL, Pan J, Bakr OM. P‐124: Perovskite Quantum Dots Display: Challenges and Opportunities. ACTA ACUST UNITED AC 2019. [DOI: 10.1002/sdtp.13283] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | | | | | - Jun Pan
- King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia
| | - Osman M. Bakr
- King Abdullah University of Science and Technology (KAUST) Thuwal Saudi Arabia
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20
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Impact of Delay Time before Annealing MAI-PbI2-DMSO Intermediate Phase on Perovskite Film Quality and Photo-Physical Properties. CRYSTALS 2019. [DOI: 10.3390/cryst9030151] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
High-performance perovskite solar cells are strongly dependent on the quality of the perovskite layer. Two-step sequential deposition of CH3NH3PbI3 (MAPbI3) films is widely used to fabricate perovskite solar cells and many factors influence the quality of perovskite films, such as the delay time before annealing the MAI-PbI2-DMSO intermediate phase, which would impact the morphology and photo-physical properties of perovskite thin films. Here, the experimental research indicates that the impact of the delay time before annealing the MAI-PbI2-DMSO intermediate phase on the quality, crystallinity, and photo-physical properties of perovskite film is crucial. During the delay process, the delay time before annealing the MAI-PbI2-DMSO intermediate phase plays an important role in the nucleation process of perovskite grains inside the intermediate phase. With the extension of the delay time before annealing, the quality of the perovskite film deteriorates, thus the photo-physical properties change. We found that after the localized liquid–liquid diffusion of MAI and PbI2, with the extension of the delay time before annealing the MAI-PbI2-DMSO intermediate phase, the nucleation number of the perovskite grains increases and the grain size becomes smaller. Therefore, with the extension of the delay time before annealing, the device performance deteriorates.
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21
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Bonadio A, de Oliveira LS, Polo AS, Souza JA. Liquid water-induced growth of the 1D morphology of CH 3NH 3PbI 3 hybrid perovskites. CrystEngComm 2019. [DOI: 10.1039/c9ce01275c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Liquid water induces the formation of 1D morphology. 1D assembly of [PbI6]4− octahedra intercalated with (CH3NH3·H2O)+ cations is formed. When the water molecules are removed the 1D assembly change to 3D perovskite but keeping its wire morphology.
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Affiliation(s)
- A. Bonadio
- Universidade Federal do ABC
- Santo André
- Brazil
| | | | - A. S. Polo
- Universidade Federal do ABC
- Santo André
- Brazil
| | - J. A. Souza
- Universidade Federal do ABC
- Santo André
- Brazil
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22
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Mahmud MA, Elumalai NK, Pal B, Jose R, Upama MB, Wang D, Gonçales VR, Xu C, Haque F, Uddin A. Electrospun 3D composite nano-flowers for high performance triple-cation perovskite solar cells. Electrochim Acta 2018. [DOI: 10.1016/j.electacta.2018.09.097] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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23
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Zhang Y, Rong M, Yan X, Wang X, Chen Y, Li X, Zhu R. Surface Modification of Methylamine Lead Halide Perovskite with Aliphatic Amine Hydroiodide. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:9507-9515. [PMID: 30044100 DOI: 10.1021/acs.langmuir.8b01650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
By spin-coating method, a thin layer of dodecylamine hydroiodide (DAHI) is introduced to the surface of perovskite CH3NH3PbI xCl3- x. This layer of DAHI successfully changes the surface of perovskite from hydrophilic to hydrophobic as revealed by the water contact angle measurement. Significantly enhanced fluorescence intensity and prolonged fluorescence lifetime are found for these modified films in comparison to those of unmodified perovskite films, suggesting that the number of structure defects is reduced dramatically. The compatibility between the perovskite and hole transfer layer (HTL) is also improved, which leads to more efficient hole collection from the perovskite layer by HTL as revealed by the fluorescence spectra, fluorescence decay dynamics, as well as the transient photocurrent measurements. Moreover, the perovskite solar cells (PSCs) fabricated from these modified perovskite films exhibit significantly improved humidity stability as well as promoted photoelectron conversion efficiency (PCE). The result of this research reveals for the first time that the layer of aliphatic amino hydroiodide is a multiple functions layer, which can not only improve the humidity stability but also promote the performance of PSCs by reducing the defect number and improve the compatibility between perovskite and HTL. Because the structure of aliphatic amines can be functionalized with myriad of other groups, this perovskite modification method should be very promising in promoting the performance of PSCs.
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Affiliation(s)
- Yingze Zhang
- College of Science , China University of Petroleum , Qingdao 266580 , China
| | - Mingjie Rong
- College of Science , China University of Petroleum , Qingdao 266580 , China
| | - Xiaoyun Yan
- College of Science , China University of Petroleum , Qingdao 266580 , China
| | - Xinlong Wang
- College of Science , China University of Petroleum , Qingdao 266580 , China
| | - Yanli Chen
- College of Science , China University of Petroleum , Qingdao 266580 , China
| | - Xiyou Li
- College of Science , China University of Petroleum , Qingdao 266580 , China
| | - Ruimin Zhu
- Department of Chemistry , Shandong University , Jinan 250014 , China
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24
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Deretzis I, Smecca E, Mannino G, La Magna A, Miyasaka T, Alberti A. Stability and Degradation in Hybrid Perovskites: Is the Glass Half-Empty or Half-Full? J Phys Chem Lett 2018; 9:3000-3007. [PMID: 29763327 DOI: 10.1021/acs.jpclett.8b00120] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Methylammonium lead iodide (CH3NH3PbI3) is an extensively used perovskite material with a remarkable potential for solar energy conversion. Despite its high photovoltaic efficiency, the material suffers from fast degradation when aging in atmospheric conditions and/or under sunlight. Here we review the principal degradation mechanisms of CH3NH3PbI3, focusing on the thermodynamic, environmental and polymorphic parameters that impact the stability of the material. A critical analysis of the available data indicates that degradation under ambient conditions is a defect-generation process that is highly localized on surfaces and interfaces, while it is further enhanced above the tetragonal-cubic transition at ∼54 °C. Within this context, we discuss the conservative role of N2 and propose strategies for the emergence of industrially viable hybrid photovoltaics.
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Affiliation(s)
- Ioannis Deretzis
- Institute for Microelectronics and Microsystems (CNR-IMM) , Zona Industriale - VIII Strada 5 , Catania 95121 , Italy
| | - Emanuele Smecca
- Institute for Microelectronics and Microsystems (CNR-IMM) , Zona Industriale - VIII Strada 5 , Catania 95121 , Italy
| | - Giovanni Mannino
- Institute for Microelectronics and Microsystems (CNR-IMM) , Zona Industriale - VIII Strada 5 , Catania 95121 , Italy
| | - Antonino La Magna
- Institute for Microelectronics and Microsystems (CNR-IMM) , Zona Industriale - VIII Strada 5 , Catania 95121 , Italy
| | - Tsutomu Miyasaka
- Graduate School of Engineering , Toin University of Yokohama , 1614, Kuroganecho , Aoba, Yokohama 225-8503 , Japan
| | - Alessandra Alberti
- Institute for Microelectronics and Microsystems (CNR-IMM) , Zona Industriale - VIII Strada 5 , Catania 95121 , Italy
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25
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Xiong H, Zabihi F, Wang H, Zhang Q, Eslamian M. Grain engineering by ultrasonic substrate vibration post-treatment of wet perovskite films for annealing-free, high performance, and stable perovskite solar cells. NANOSCALE 2018; 10:8526-8535. [PMID: 29694485 DOI: 10.1039/c8nr00540k] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Perovskite solar cells (PSCs) have gained great interest, owing to a fast increase in their power conversion efficiency (PCE), within a few years. However, their wide application and scale-up are hampered due to multiple obstacles, such as chemical instability, which leads to a short lifetime, and their complicated reaction and crystallization, which requires thermal annealing. Here, we address these issues using the ultrasonic substrate vibration post treatment (SVPT) applied on the as-spun perovskite wet films, so as to achieve a uniform, microscale and stable mixed-halide and mixed-cation perovskite layer, (FAPbI3)0.85(MAPbBr3)0.15, without the need for a conventional thermal annealing step. This is achieved by the creation of fluid micromixing and in situ annealing within the solution, caused by the ultrasonic excitation of the wet film. The optoelectronic properties of the perovskite films subjected to the SVPT, including photoemission, carrier lifetime and band gap, are remarkably improved compared to the conventionally annealed films. When incorporated into a planar PSC, a maximum PCE of 18.55% was achieved, compared to 15.17% for the control device, with high reproducibility and no hysteresis, and the device retained 80% of its initial PCE, over a period of 20 days of storage under ambient conditions.
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Affiliation(s)
- Hao Xiong
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China.
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26
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Kye YH, Yu CJ, Jong UG, Chen Y, Walsh A. Critical Role of Water in Defect Aggregation and Chemical Degradation of Perovskite Solar Cells. J Phys Chem Lett 2018; 9:2196-2201. [PMID: 29642701 DOI: 10.1021/acs.jpclett.8b00406] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
The chemical stability of methylammonium lead iodide (MAPbI3) under humid conditions remains the primary challenge facing halide perovskite solar cells. We investigate defect processes in the water-intercalated iodide perovskite (MAPbI3_H2O) and monohydrated phase (MAPbI3·H2O) within a first-principles thermodynamic framework. We consider the formation energies of isolated and aggregated vacancy defects with different charge states under I-rich and I-poor conditions. It is found that a PbI2 (partial Schottky) vacancy complex can be formed readily, while the MAI vacancy complex is difficult to form in the hydrous compounds. Vacancies in the hydrous phases create deep charge transition levels, indicating the degradation of the lead halide perovskite upon exposure to moisture. Electronic structure analysis supports a mechanism of water-mediated vacancy pair formation.
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Affiliation(s)
- Yun-Hyok Kye
- Computational Materials Design (CMD), Faculty of Materials Science , Kim Il Sung University , Ryongnam-Dong, Taesong District, Pyongyang , Democratic People's Republic of Korea
| | - Chol-Jun Yu
- Computational Materials Design (CMD), Faculty of Materials Science , Kim Il Sung University , Ryongnam-Dong, Taesong District, Pyongyang , Democratic People's Republic of Korea
| | - Un-Gi Jong
- Computational Materials Design (CMD), Faculty of Materials Science , Kim Il Sung University , Ryongnam-Dong, Taesong District, Pyongyang , Democratic People's Republic of Korea
| | - Yue Chen
- Department of Mechanical Engineering , The University of Hong Kong , Pokfulam Road , Hong Kong SAR , China
| | - Aron Walsh
- Department of Materials , Imperial College London , London SW7 2AZ , United Kingdom
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27
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Segovia R, Qu G, Peng M, Sun X, Shi H, Gao B. Evolution of Photoluminescence, Raman, and Structure of CH 3NH 3PbI 3 Perovskite Microwires Under Humidity Exposure. NANOSCALE RESEARCH LETTERS 2018. [PMID: 29516198 PMCID: PMC5842165 DOI: 10.1186/s11671-018-2470-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
Self-assembled organic-inorganic CH3NH3PbI3 perovskite microwires (MWs) upon humidity exposure along several weeks were investigated by photoluminescence (PL) spectroscopy, Raman spectroscopy, and X-ray diffraction (XRD). We show that, in addition to the common perovskite decomposition into PbI2 and the formation of a hydrated phase, humidity induced a gradual PL redshift at the initial weeks that is stabilized for longer exposure (~ 21 nm over the degradation process) and an intensity enhancement. Original perovskite Raman band and XRD reflections slightly shifted upon humidity, indicating defects formation and structure distortion of the MWs crystal lattice. By correlating the PL, Raman, and XRD results, it is believed that the redshift of the MWs PL emission was originated from the structural disorder caused by the incorporation of H2O molecules in the crystal lattice and radiative recombination through moisture-induced subgap trap states. Our study provides insights into the optical and structural response of organic-inorganic perovskite materials upon humidity exposure.
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Affiliation(s)
- Rubén Segovia
- Institute of Modern Optics, Key Lab of Micro-optics and Photonic Technology of Heilongjiang Province, Key Laboratory of Micro-Nano Optoelectronic Information System, Ministry of Industry and Information Technology, Department of Physics, Harbin Institute of Technology, Harbin, 150001 China
| | - Geyang Qu
- Institute of Modern Optics, Key Lab of Micro-optics and Photonic Technology of Heilongjiang Province, Key Laboratory of Micro-Nano Optoelectronic Information System, Ministry of Industry and Information Technology, Department of Physics, Harbin Institute of Technology, Harbin, 150001 China
| | - Miao Peng
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001 China
| | - Xiudong Sun
- Institute of Modern Optics, Key Lab of Micro-optics and Photonic Technology of Heilongjiang Province, Key Laboratory of Micro-Nano Optoelectronic Information System, Ministry of Industry and Information Technology, Department of Physics, Harbin Institute of Technology, Harbin, 150001 China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 03006 China
| | - Hongyan Shi
- Institute of Modern Optics, Key Lab of Micro-optics and Photonic Technology of Heilongjiang Province, Key Laboratory of Micro-Nano Optoelectronic Information System, Ministry of Industry and Information Technology, Department of Physics, Harbin Institute of Technology, Harbin, 150001 China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 03006 China
| | - Bo Gao
- Institute of Modern Optics, Key Lab of Micro-optics and Photonic Technology of Heilongjiang Province, Key Laboratory of Micro-Nano Optoelectronic Information System, Ministry of Industry and Information Technology, Department of Physics, Harbin Institute of Technology, Harbin, 150001 China
- Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, 03006 China
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28
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Tan W, Bowring AR, Meng AC, McGehee MD, McIntyre PC. Thermal Stability of Mixed Cation Metal Halide Perovskites in Air. ACS APPLIED MATERIALS & INTERFACES 2018; 10:5485-5491. [PMID: 29328620 DOI: 10.1021/acsami.7b15263] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
We study the thermal stability in air of the mixed cation organic-inorganic lead halide perovskites Cs0.17FA0.83Pb(I0.83Br0.17)3 and Cs0.05(MA0.17FA0.83)0.95Pb(I0.83Br0.17)3. For the latter compound, containing both MA+ and FA+ ions, thermal decomposition of the perovskite phase was observed to occur in two stages. The first stage of decomposition occurs at a faster rate compared to the second stage and is only observed at relatively low temperatures (T < 150 °C). For the second stage, we find that both decomposition rate and the activation energy have similar values for Cs0.05(MA0.17FA0.83)0.95Pb(I0.83Br0.17)3 and Cs0.17FA0.83Pb(I0.83Br0.17)3, which suggests that the first stage mainly involves reaction of MA+ and the second stage mainly FA+.
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Affiliation(s)
- Wanliang Tan
- Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States
| | - Andrea R Bowring
- Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States
| | - Andrew C Meng
- Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States
| | - Michael D McGehee
- Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States
| | - Paul C McIntyre
- Department of Materials Science and Engineering, Stanford University , Stanford, California 94305, United States
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29
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Mahmud MA, Elumalai NK, Upama MB, Wang D, Zarei L, Gonçales VR, Wright M, Xu C, Haque F, Uddin A. Adsorbed carbon nanomaterials for surface and interface-engineered stable rubidium multi-cation perovskite solar cells. NANOSCALE 2018; 10:773-790. [PMID: 29256572 DOI: 10.1039/c7nr06812c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The current work reports the simultaneous enhancement in efficiency and stability of low-temperature, solution-processed triple cation based MA0.57FA0.38Rb0.05PbI3 (MA: methyl ammonium, FA: formamidinium, Rb: rubidium) perovskite solar cells (PSCs) by means of adsorbed carbon nanomaterials at the perovskite/electron transporting layer interface. The quantity and quality of the adsorbents are precisely controlled to electronically modify the ETL surface and lower the energy barrier across the interface. Carbon derivatives namely fullerene (C60) and PC71BM ([6,6]-phenyl C71 butyric acid methyl ester) are employed as adsorbents in conjunction with ZnO and together serve as a bilayer electron transporting layer (ETL). The adsorbed fullerene (C60-ZnO, abbreviated as C-ZnO) passivates the interstitial trap-sites of ZnO with interstitial intercalation of oxygen atoms in the ZnO lattice structure. C-ZnO ETL based PSCs demonstrate about a 19% higher average PCE compared to conventional ZnO ETL based devices and a nearly 9% higher average PCE than PC71BM adsorbed-ZnO (P-ZnO) ETL based PSCs. In addition, the interstitial trap-state passivation with a C-ZnO film upshifts the Fermi-level position of the C-ZnO ETL by 130 meV, with reference to the ZnO ETL, which contributes to an enhanced n-type conductivity. The photocurrent hysteresis phenomenon in C-ZnO PSCs is also substantially reduced due to mitigated charge trapping phenomena and concomitant reduction in an electrode polarization process. Another major highlight of this work is that, C-ZnO PSCs demonstrate a superior device stability retaining about 94% of its initial PCE in the course of a month-long, systematic degradation study conducted in our work. The enhanced device stability with C-ZnO PSCs is attributed to their high resistance to aging-induced recombination phenomena and a water-induced perovskite degradation process, due to a lower content of oxygen-related chemisorbed species on the C-ZnO ETL. The intricate mechanisms behind the efficiency and stability enhancement are investigated in detail and explained in the context of enhanced surface and interfacial electronic properties.
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Affiliation(s)
- Md Arafat Mahmud
- School of Photovoltaic and Renewable Energy Engineering, University of New South Wales, Sydney, NSW 2052, Australia.
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30
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Lim EL, Yap CC, Jumali MHH, Teridi MAM, Teh CH. A Mini Review: Can Graphene Be a Novel Material for Perovskite Solar Cell Applications? NANO-MICRO LETTERS 2017; 10:27. [PMID: 30393676 PMCID: PMC6199075 DOI: 10.1007/s40820-017-0182-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 12/05/2017] [Indexed: 05/25/2023]
Abstract
Perovskite solar cells (PSCs) have raised research interest in scientific community because their power conversion efficiency is comparable to that of traditional commercial solar cells (i.e., amorphous Si, GaAs, and CdTe). Apart from that, PSCs are lightweight, are flexible, and have low production costs. Recently, graphene has been used as a novel material for PSC applications due to its excellent optical, electrical, and mechanical properties. The hydrophobic nature of graphene surface can provide protection against air moisture from the surrounding medium, which can improve the lifetime of devices. Herein, we review recent developments in the use of graphene for PSC applications as a conductive electrode, carrier transporting material, and stabilizer material. By exploring the application of graphene in PSCs, a new class of strategies can be developed to improve the device performance and stability before it can be commercialized in the photovoltaic market in the near future.
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Affiliation(s)
- Eng Liang Lim
- School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
| | - Chi Chin Yap
- School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia.
| | - Mohammad Hafizuddin Hj Jumali
- School of Applied Physics, Faculty of Science and Technology, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Mohd Asri Mat Teridi
- Solar Energy Research Institute, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
| | - Chin Hoong Teh
- ASASI Pintar Program, Pusat Permata Pintar Negara, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia
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31
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Qiao B, Song P, Cao J, Zhao S, Shen Z, Liang Z, Xu Z, Song D, Xu X. Water-resistant, monodispersed and stably luminescent CsPbBr 3/CsPb 2Br 5 core-shell-like structure lead halide perovskite nanocrystals. NANOTECHNOLOGY 2017; 28:445602. [PMID: 28853708 DOI: 10.1088/1361-6528/aa892e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Lead halide perovskite materials are thriving in optoelectronic applications due to their excellent properties, while their instability due to the fact that they are easily hydrolyzed is still a bottleneck for their potential application. In this work, water-resistant, monodispersed and stably luminescent cesium lead bromine perovskite nanocrystals coated with CsPb2Br5 were obtained using a modified non-stoichiometric solution-phase method. CsPb2Br5 2D layers were coated on the surface of CsPbBr3 nanocrystals and formed a core-shell-like structure in the synthetic processes. The stability of the luminescence of the CsPbBr3 nanocrystals in water and ethanol atmosphere was greatly enhanced by the photoluminescence-inactive CsPb2Br5 coating with a wide bandgap. The water-stable enhanced nanocrystals are suitable for long-term stable optoelectronic applications in the atmosphere.
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Affiliation(s)
- Bo Qiao
- Key Laboratory of Luminescence and Optical Information, Beijing Jiaotong University, Ministry of Education, Beijing, 100044, People's Republic of China. Institute of Optoelectronics Technology, Beijing Jiaotong University, Beijing, 100044, People's Republic of China
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32
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Xia Z, Yu FX, Lu SC, Xue DJ, He YS, Yang B, Wang C, Ding RQ, Zhong J, Tang J. Synthesis and characterization of NaSbS 2 thin film for potential photodetector and photovoltaic application. CHINESE CHEM LETT 2017. [DOI: 10.1016/j.cclet.2017.03.003] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Huang S, Li Z, Wang B, Zhu N, Zhang C, Kong L, Zhang Q, Shan A, Li L. Morphology Evolution and Degradation of CsPbBr 3 Nanocrystals under Blue Light-Emitting Diode Illumination. ACS APPLIED MATERIALS & INTERFACES 2017; 9:7249-7258. [PMID: 28181794 DOI: 10.1021/acsami.6b14423] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
Under illumination of light-emitting diode (LED) or sunlight, the green color of all-inorganic CsPbBr3 perovskite nanocrystals (CPB-NCs) often quickly changes to yellow, followed by large photoluminescence (PL) loss. To figure out what is happening on CPB-NCs during the color change process, the morphology, structure, and PL evolutions are systematically investigated by varying the influence factors of illumination, moisture, oxygen, and temperature. We find that the yellow color is mainly originated from the large CPB crystals formed in the illumination process. With maximized isolation of oxygen for the sandwiched film or the uncovered film stored in nitrogen, the color change can be dramatically slowed down whether there is water vapor or not. Under dark condition, the PL emissions are not significantly influenced by the varied relative humidity (RH) levels and temperatures up to 60 °C. Under the precondition of oxygen or air, color change and PL loss become more obvious when increasing the illumination power or RH level, and the large-sized cubic CPB crystals are further evolved into the oval-shaped crystals. We confirm that oxygen is the crucial factor to drive the color change, which has the strong synergistic effect with the illumination and moisture for the degradation of the CPB film. Meanwhile, the surface decomposition and the increased charge trap states occurred in the formed large CPB crystals play important roles for the PL loss.
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Affiliation(s)
- Shouqiang Huang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, 200240 Shanghai, China
| | - Zhichun Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, 200240 Shanghai, China
| | - Bo Wang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, 200240 Shanghai, China
| | - Nanwen Zhu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, 200240 Shanghai, China
| | - Congyang Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, 200240 Shanghai, China
| | - Long Kong
- School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, 200240 Shanghai, China
| | - Qi Zhang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, 200240 Shanghai, China
| | - Aidang Shan
- School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, 200240 Shanghai, China
| | - Liang Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University , 800 Dongchuan Road, 200240 Shanghai, China
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Li H, Liang C, Liu Y, Zhang Y, Tong J, Zuo W, Xu S, Shao G, Cao S. Covalently Connecting Crystal Grains with Polyvinylammonium Carbochain Backbone To Suppress Grain Boundaries for Long-Term Stable Perovskite Solar Cells. ACS APPLIED MATERIALS & INTERFACES 2017; 9:6064-6071. [PMID: 28124553 DOI: 10.1021/acsami.6b15434] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Grain boundaries act as rapid pathways for nonradiative carrier recombination, anion migration, and water corrosion, leading to low efficiency and poor stability of organometal halide perovskite solar cells (PSCs). In this work, the strategy suppressing the crystal grain boundaries is applied to improve the photovoltaic performance, especially moisture-resistant stability, with polyvinylammonium carbochain backbone covalently connecting the perovskite crystal grains. This cationic polyelectrolyte additive serves as nucleation sites and template for crystal growth of MAPbI3 and afterward the immobilized adjacent crystal grains grow into the continuous compact, pinhole-free perovskite layer. As a result, the unsealed PSC devices, which are fabricated under low-temperature fabrication protocol with a proper content of polymer additive PVAm·HI, currently exhibit the maximum efficiency of 16.3%. Remarkably, these unsealed devices follow an "outside-in" corrosion mechanism and respectively retain 92% and 80% of the initial PCE value after being exposed under ambient environment for 50 days and 100 days, indicating the superiority of carbochain polymer additives in solving the long-term stability problem of PSCs.
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Affiliation(s)
- Han Li
- School of Materials Science and Engineering, Zhengzhou University , Zhengzhou 450001, People's Republic of China
| | - Chao Liang
- School of Materials Science and Engineering, Zhengzhou University , Zhengzhou 450001, People's Republic of China
- State Centre for International Cooperation on Designer Low-Carbon and Environmental Material (SCICDLCEM), Zhengzhou University , Zhengzhou 450001, People's Republic of China
| | - Yingliang Liu
- School of Materials Science and Engineering, Zhengzhou University , Zhengzhou 450001, People's Republic of China
| | - Yiqiang Zhang
- School of Materials Science and Engineering, Zhengzhou University , Zhengzhou 450001, People's Republic of China
- State Centre for International Cooperation on Designer Low-Carbon and Environmental Material (SCICDLCEM), Zhengzhou University , Zhengzhou 450001, People's Republic of China
| | - Jincheng Tong
- School of Materials Science and Engineering, Zhengzhou University , Zhengzhou 450001, People's Republic of China
| | - Weiwei Zuo
- School of Materials Science and Engineering, Zhengzhou University , Zhengzhou 450001, People's Republic of China
| | - Shengang Xu
- School of Materials Science and Engineering, Zhengzhou University , Zhengzhou 450001, People's Republic of China
| | - Guosheng Shao
- School of Materials Science and Engineering, Zhengzhou University , Zhengzhou 450001, People's Republic of China
- State Centre for International Cooperation on Designer Low-Carbon and Environmental Material (SCICDLCEM), Zhengzhou University , Zhengzhou 450001, People's Republic of China
| | - Shaokui Cao
- School of Materials Science and Engineering, Zhengzhou University , Zhengzhou 450001, People's Republic of China
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35
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Mahmud MA, Elumalai NK, Upama MB, Wang D, Gonçales VR, Wright M, Xu C, Haque F, Uddin A. A high performance and low-cost hole transporting layer for efficient and stable perovskite solar cells. Phys Chem Chem Phys 2017; 19:21033-21045. [DOI: 10.1039/c7cp03551a] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A F4TCNQ doped FDT HTL based PSC demonstrates 75% higher device stability than a conventional Li-TFSI doped FDT based PSC.
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Affiliation(s)
- Md Arafat Mahmud
- School of Photovoltaic and Renewable Energy Engineering
- University of New South Wales
- Sydney
- Australia
| | - Naveen Kumar Elumalai
- School of Photovoltaic and Renewable Energy Engineering
- University of New South Wales
- Sydney
- Australia
| | - Mushfika Baishakhi Upama
- School of Photovoltaic and Renewable Energy Engineering
- University of New South Wales
- Sydney
- Australia
| | - Dian Wang
- School of Photovoltaic and Renewable Energy Engineering
- University of New South Wales
- Sydney
- Australia
| | | | - Matthew Wright
- School of Photovoltaic and Renewable Energy Engineering
- University of New South Wales
- Sydney
- Australia
| | - Cheng Xu
- School of Photovoltaic and Renewable Energy Engineering
- University of New South Wales
- Sydney
- Australia
| | - Faiazul Haque
- School of Photovoltaic and Renewable Energy Engineering
- University of New South Wales
- Sydney
- Australia
| | - Ashraf Uddin
- School of Photovoltaic and Renewable Energy Engineering
- University of New South Wales
- Sydney
- Australia
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Palma AL, Cinà L, Busby Y, Marsella A, Agresti A, Pescetelli S, Pireaux JJ, Di Carlo A. Mesoscopic Perovskite Light-Emitting Diodes. ACS APPLIED MATERIALS & INTERFACES 2016; 8:26989-26997. [PMID: 27667291 DOI: 10.1021/acsami.6b07750] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Solution-processed hybrid bromide perovskite light-emitting-diodes (PLEDs) represent an attractive alternative technology that would allow overcoming the well-known severe efficiency drop in the green spectrum related to conventional LEDs technologies. In this work, we report on the development and characterization of PLEDs fabricated using, for the first time, a mesostructured layout. Stability of PLEDs is a critical issue; remarkably, mesostructured PLEDs devices tested in ambient conditions and without encapsulation showed a lifetime well-above what previously reported with a planar heterojunction layout. Moreover, mesostructured PLEDs measured under full operative conditions showed a remarkably narrow emission spectrum, even lower than what is typically obtained by nitride- or phosphide-based green LEDs. A dynamic analysis has shown fast rise and fall times, demonstrating the suitability of PLEDs for display applications. Combined electrical and advanced structural analyses (Raman, XPS depth profiling, and ToF-SIMS 3D analysis) have been performed to elucidate the degradation mechanism, the results of which are mainly related to the degradation of the hole-transporting material (HTM) and to the perovskite-HTM interface.
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Affiliation(s)
- Alessandro Lorenzo Palma
- C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, University of Rome Tor Vergata , Via del Politecnico 1, 00133 Rome, Italy
| | - Lucio Cinà
- C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, University of Rome Tor Vergata , Via del Politecnico 1, 00133 Rome, Italy
| | - Yan Busby
- Department of Physics, Research Center in Physics of Matter and Radiation (PMR), LISE Laboratory, Université de Namur ASBL , Rue de Bruxelles 61, 5000 Namur, Belgium
| | - Andrea Marsella
- C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, University of Rome Tor Vergata , Via del Politecnico 1, 00133 Rome, Italy
| | - Antonio Agresti
- C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, University of Rome Tor Vergata , Via del Politecnico 1, 00133 Rome, Italy
| | - Sara Pescetelli
- C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, University of Rome Tor Vergata , Via del Politecnico 1, 00133 Rome, Italy
| | - Jean-Jacques Pireaux
- Department of Physics, Research Center in Physics of Matter and Radiation (PMR), LISE Laboratory, Université de Namur ASBL , Rue de Bruxelles 61, 5000 Namur, Belgium
| | - Aldo Di Carlo
- C.H.O.S.E. (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, University of Rome Tor Vergata , Via del Politecnico 1, 00133 Rome, Italy
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Sun PP, Chi WJ, Li ZS. Effects of water molecules on the chemical stability of MAGeI3 perovskite explored from a theoretical viewpoint. Phys Chem Chem Phys 2016; 18:24526-36. [PMID: 27539944 DOI: 10.1039/c6cp04344e] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The stability of perovskite in humid environments is one of the biggest obstacles for its potential applications in light harvesting and electroluminescent displays. Understanding the detailed degradation mechanism of MAGeI3 in moisture is a critical way to explore the practicability of MAGeI3 perovskite. In this study, we report a quantitative and systematic investigation of MAGeI3 degradation processes by exploring the effects of H2O molecules on the structural and electronic properties of the most stable MAGeI3(101) surface under various simulated environmental conditions with different water coverage based on first-principles calculations. The results show that H2O molecules can easily diffuse into the inner side of the perovskite and gradually corrode the structure as the number of H2O molecules increases. As a result of the interactions between perovskite and H2O molecules, a hydrated intermediate will be generated as the first step in the degradation mechanism; the perovskite will further decompose to HI and GeI2. In terms of one MAGeI3 molecule, it will be dissociated completely to GeI2 as a result of hydrolysis reactions with a minimum of 4H2O molecules. In addition, the degradation of the perovskite will also affect the electronic structure, causing a decrease in optical absorption across the visible region of the spectrum and a distinct deformation change in the crystal structure of the material. These findings further illustrate the degradation of the hydrolysis process of MAGeI3 perovskite in humid environments, which should be helpful to inspire experimentalists to take action to prolong the lifetimes of perovskite solar cells to achieve high conversion efficiency in their applications.
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Affiliation(s)
- Ping-Ping Sun
- Key Laboratory of Cluster Science of Ministry of Education, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry, Beijing Institute of Technology, Beijing 100081, China.
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38
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Yang J, Kelly TL. Decomposition and Cell Failure Mechanisms in Lead Halide Perovskite Solar Cells. Inorg Chem 2016; 56:92-101. [DOI: 10.1021/acs.inorgchem.6b01307] [Citation(s) in RCA: 95] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jinli Yang
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
| | - Timothy L. Kelly
- Department of Chemistry, University of Saskatchewan, 110 Science Place, Saskatoon, Saskatchewan S7N 5C9, Canada
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