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Cheng L, Xu B, Zeng Y, Meng L. Intrinsic defects at the interface of the FAPbI 3/MAPbI 3 superlattice: insight from first-principles calculations. Phys Chem Chem Phys 2023; 25:6369-6379. [PMID: 36779360 DOI: 10.1039/d2cp05114a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
The use of a superlattice structure is an effective strategy to develop novel perovskites and obtain excellent light-absorbing materials. Based on first-principles calculations, we systematically studied the properties of intrinsic point defects at the interface of the FAPbI3/MAPbI3 superlattice. Our calculations show that charged defects are easier to form as compared to neutral ones at the superlattice interface due to low formation energies. Most defects with low formation energies have a shallow level in the band gap, and some deep level defects have high formation energies, so the superlattice perovskite exhibits high defect tolerance. PbI3+ is a dominant and detrimental defect, which acts as a non-radiative recombination center because it has low formation energy and a deep transition level. To avoid the generation of PbI3+ defects, it is suggested to synthesize FAPbI3/MAPbI3 superlattices under I-rich conditions. The calculated light absorption coefficients and photovoltaic performance parameters demonstrate that the presence of defects leads to a certain degree of reduction in light absorption and power conversion efficiency (PCE) of solar cells made of FAPbI3/MAPbI3 superlattices, but the excellent performance of the perovskite solar cell (PSC) is basically retained. The superlattice perovskites are still promising candidates for light-absorbing materials of PSCs. This study is expected to contribute to a better understanding of the properties of defects at the superlattice interface and provide theoretical support for the design of high performance PSCs.
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Affiliation(s)
- Liping Cheng
- Hebei Key Laboratory of Inorganic Nano-materials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, P. R. China. .,College of Chemistry and Chemical Engineering, Xingtai University, Xingtai, 054001, P. R. China
| | - Baoen Xu
- Technology Innovation Center of Hebei Province for Heterocyclic Compound, College of Chemical Engineering, Shijiazhuang University, Shijiazhuang 050035, P. R. China
| | - Yanli Zeng
- Hebei Key Laboratory of Inorganic Nano-materials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, P. R. China.
| | - Lingpeng Meng
- Hebei Key Laboratory of Inorganic Nano-materials, College of Chemistry and Materials Science, Hebei Normal University, Shijiazhuang 050024, P. R. China.
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Cai Z, Zhang X, Xiao S, Ge S, Liu X, Zhang Y, Chen L, Hua XN, Sun B. Design, synthesis, and characterization of a new hybrid organic-inorganic perovskite with a high- Tc dielectric transition. Dalton Trans 2023; 52:955-961. [PMID: 36597776 DOI: 10.1039/d2dt03503k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Phase change materials (PCMs) have drawn increasing attention for their promising applications in thermal switches, data communication, and energy storage. Because of the complexity of the interactions between molecules, it is still a challenge to design PCMs with a desired high phase transition temperature (Tc). In this study, a one-dimensional hybrid perovskite of (TEACCl)PbBr3 (1, TEACCl = Et3NCH2Cl) was successfully designed and synthesized with a Tc = 390 K. Disordering of TEACCl+ on the heating process is the origin of the structural phase transition of 1 from the P21/c to P63/mmc structure. It is noted that the phase transition is associated with an excellent switchable dielectric property, which indicates that 1 has the potential to be applied to sensor equipment. After calculation, 1 is an infrequent indirect bandgap semiconductor with an energy gap of 3.57 eV. Moreover, 1 exhibits strong red fluorescence under irradiation of UV light. This work will provide guidance for designing high Tc switching materials.
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Affiliation(s)
- Zhuoer Cai
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
| | - Xinyi Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
| | - Shiyue Xiao
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
| | - Shuwang Ge
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
| | - Xianmin Liu
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
| | - Yinan Zhang
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
| | - Long Chen
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Xiu-Ni Hua
- School of Environmental Science, Nanjing Xiaozhuang University, Nanjing 211171, P. R. China.
| | - Baiwang Sun
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, P. R. China.
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Improved Power Conversion Efficiency with Tunable Electronic Structures of the Cation-Engineered [Ai]PbI3 Perovskites for Solar Cells: First-Principles Calculations. Int J Mol Sci 2022; 23:ijms232113556. [DOI: 10.3390/ijms232113556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 10/23/2022] [Accepted: 11/02/2022] [Indexed: 11/09/2022] Open
Abstract
Higher power conversion efficiencies for photovoltaic devices can be achieved through simple and low production cost processing of APbI3(A=CH3NH3,CHN2H4,…) perovskites. Due to their limited long-term stability, however, there is an urgent need to find alternative structural combinations for this family of materials. In this study, we propose to investigate the prospects of cation-substitution within the A-site of the APbI3 perovskite by selecting nine substituting organic and inorganic cations to enhance the stability of the material. The tolerance and the octahedral factors are calculated and reported as two of the most critical geometrical features, in order to assess which perovskite compounds can be experimentally designed. Our results showed an improvement in the thermal stability of the organic cation substitutions in contrast to the inorganic cations, with an increase in the power conversion efficiency of the Hydroxyl-ammonium (NH3OH) substitute to η = 25.84%.
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Li JF, Wang JH, Yin B. Assessment of XC functionals for the study of organic molecules with superhalogen substitution. A systematic comparison between DFT and CCSD(T). J Chem Phys 2022; 156:184303. [PMID: 35568538 DOI: 10.1063/5.0089672] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
A systematic density functional theory study, including 17 exchange-correlation functionals, was performed on 22 composite structures consisting of organic molecules, e.g., ethylene, ethane, and benzene, and superhalogen substitutions arising from [MgX3]- and [Mg2X5]- (X = F, Cl). Range-separated hybrid functionals ωB97M-V, ωB97X-D3(BJ), ωB97XD, ωB97X, and CAM-B3LYP, as well as double-hybrid functionals B2PLYP and DSD-PBEP86-D3(BJ), are verified to provide reliable results with accuracy approaching that at the coupled-cluster single double triple [CCSD(T)] level. The basis set effect of density functional theory calculation is usually moderate, and triple-ξ quality, e.g., Def2-TZVP, is enough in most cases. In addition, the average values from HF and MP2 method, indicated as (MP2 + HF)/2, are also quite close to those of CCSD(T).
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Affiliation(s)
- Jin-Feng Li
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an University, Yan'an 716000, People's Republic of China
| | - Jia-Hui Wang
- College of Chemistry and Chemical Engineering, Shaanxi Key Laboratory of Chemical Reaction Engineering, Yan'an University, Yan'an 716000, People's Republic of China
| | - Bing Yin
- Lab of Theoretical Molecular Magnetism (LTMM), College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China
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Zhang Z, Ghimire S, Okamoto T, Sachith BM, Sobhanan J, Subrahmanyam C, Biju V. Mechano-optical Modulation of Excitons and Carrier Recombination in Self-Assembled Halide Perovskite Quantum Dots. ACS NANO 2022; 16:160-168. [PMID: 34978425 DOI: 10.1021/acsnano.1c04944] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Mechanically modulating optical properties of semiconductor nanocrystals and organic molecules are valuable for mechano-optical and optomechanical devices. Halide perovskites with excellent optical and electronic properties are promising for such applications. We report the mechanically changing excitons and photoluminescence of self-assembled formamidinium lead bromide (FAPbBr3) quantum dots. The as-synthesized quantum dots (3.6 nm diameter), showing blue emission and a short photoluminescence lifetime (2.6 ns), form 20-300 nm 2D and 3D self-assemblies with intense green emission in a solution or a film. The blue emission and short photoluminescence lifetime of the quantum dots are different from the delayed (ca. 550 ns) green emission from the assemblies. Thus, we consider the structure and excitonic properties of individual quantum dots differently from the self-assemblies. The blue emission and short lifetime of individual quantum dots are consistent with a weak dielectric screening of excitons or strong quantum confinement. The red-shifted emission and a long photoluminescence lifetime of the assemblies suggest a strong dielectric screening that weakens the quantum confinement, allowing excitons to split into free carriers, diffuse, and trap. The delayed emission suggests nongeminate recombination of diffusing and detrapped carriers. Interestingly, the green emission of the self-assembly blueshifts by applying a lateral mechanical force (ca. 4.65 N). Correspondingly, the photoluminescence lifetime decreases by 1 order of magnitude. These photoluminescence changes suggest the mechanical dissociation of the quantum dot self-assemblies and mechanically controlled exciton splitting and recombination. The mechanically changing emission color and lifetime of halide perovskite are promising for mechano-optical and optomechanical switches and sensors.
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Affiliation(s)
- Zhijing Zhang
- Research Institute for Electronic Science, Hokkaido University, N20, W10, Sapporo, Hokkaido 001-0020, Japan
- Graduate School of Environmental Science, Hokkaido University, N10, W5, Sapporo, Hokkaido 060-0810, Japan
| | - Sushant Ghimire
- Research Institute for Electronic Science, Hokkaido University, N20, W10, Sapporo, Hokkaido 001-0020, Japan
- Institute of Physics, University of Rostock, Albert-Einstein-Straβe 23, 18059 Rostock, Germany
| | - Takuya Okamoto
- Research Institute for Electronic Science, Hokkaido University, N20, W10, Sapporo, Hokkaido 001-0020, Japan
| | | | - Jeladhara Sobhanan
- Graduate School of Environmental Science, Hokkaido University, N10, W5, Sapporo, Hokkaido 060-0810, Japan
| | - Challapalli Subrahmanyam
- Department of Chemistry, Indian Institute of Technology Hyderabad, Mandi, Telangana 502285, India
| | - Vasudevanpillai Biju
- Research Institute for Electronic Science, Hokkaido University, N20, W10, Sapporo, Hokkaido 001-0020, Japan
- Graduate School of Environmental Science, Hokkaido University, N10, W5, Sapporo, Hokkaido 060-0810, Japan
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Wen Y, Wang G, Jiang X, Ye X, Li W, Xu G. A Covalent Organic–Inorganic Hybrid Superlattice Covered with Organic Functional Groups for Highly Sensitive and Selective Gas Sensing. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202107185] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Yingyi Wen
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences (CAS) 115 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
- University of Chinese Academy of Sciences (UCAS) 19A Yuquan Road Beijing 100049 P. R. China
| | - Guan‐E Wang
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences (CAS) 115 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Xiaoming Jiang
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences (CAS) 115 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Xiaoliang Ye
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences (CAS) 115 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Wenhua Li
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences (CAS) 115 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
| | - Gang Xu
- State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences (CAS) 115 Yangqiao Road West Fuzhou Fujian 350002 P. R. China
- University of Chinese Academy of Sciences (UCAS) 19A Yuquan Road Beijing 100049 P. R. China
- Fujian Science & Technology Innovation Laboratory for, Optoelectronic Information of China Fuzhou Fujian 350108 P. R. China
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Wen Y, Wang GE, Jiang X, Ye X, Li W, Xu G. A Covalent Organic-Inorganic Hybrid Superlattice Covered with Organic Functional Groups for Highly Sensitive and Selective Gas Sensing. Angew Chem Int Ed Engl 2021; 60:19710-19714. [PMID: 34240809 DOI: 10.1002/anie.202107185] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Revised: 06/29/2021] [Indexed: 01/05/2023]
Abstract
Organic-inorganic hybrid superlattices (OIHSLs) hold attractive physical and chemical properties, while the construction of single-crystal covalent OIHSLs has not been achieved. Herein a coordination assembly strategy was proposed to create a single-crystal covalent OIHSL PbBDT (BDT=1,4-benzenedithiolate), where layered [PbS2 ] sublattice covalently connects with benzene sublattice. The covalent bonding offers better thermo-/chemi-stability, inter-sublattice electron transport, and unique organic-group-functionalized surface, which may enable better performances in chemical applications than non-covalent OIHSL. These features endow PbBDT with the highest sensitivity, the lowest detection limit and excellent selectivity towards NO2 at room temperature among all chemiresistive gas-sensing materials with reported response time less than 2 min without the need of light assistance.
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Affiliation(s)
- Yingyi Wen
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences (CAS), 115 Yangqiao Road West, Fuzhou, Fujian, 350002, P. R. China.,University of Chinese Academy of Sciences (UCAS), 19A Yuquan Road, Beijing, 100049, P. R. China
| | - Guan-E Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences (CAS), 115 Yangqiao Road West, Fuzhou, Fujian, 350002, P. R. China
| | - Xiaoming Jiang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences (CAS), 115 Yangqiao Road West, Fuzhou, Fujian, 350002, P. R. China
| | - Xiaoliang Ye
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences (CAS), 115 Yangqiao Road West, Fuzhou, Fujian, 350002, P. R. China
| | - Wenhua Li
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences (CAS), 115 Yangqiao Road West, Fuzhou, Fujian, 350002, P. R. China
| | - Gang Xu
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences (CAS), 115 Yangqiao Road West, Fuzhou, Fujian, 350002, P. R. China.,University of Chinese Academy of Sciences (UCAS), 19A Yuquan Road, Beijing, 100049, P. R. China.,Fujian Science & Technology Innovation Laboratory for, Optoelectronic Information of China, Fuzhou, Fujian, 350108, P. R. China
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Bhattacharya S, Chandra GK, Predeep P. A Microstructural Analysis of 2D Halide Perovskites: Stability and Functionality. FRONTIERS IN NANOTECHNOLOGY 2021. [DOI: 10.3389/fnano.2021.657948] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Recent observations have demonstrated that the photoelectric conversion properties of perovskite materials are intimately related to the presence of superlattice structures and other unusual nanoscale features in them. The low-dimensional or mixed-dimensional halide perovskite families are found to be more efficient materials for device application than three-dimensional halide perovskites. The emergence of perovskite solar cells has revolutionized the solar cell industry because of their flexible architecture and rapidly increased efficiency. Tuning the dielectric constant and charge separation are the main objectives in designing a photovoltaic device that can be explored using the two-dimensional perovskite family. Thus, revisiting the fundamental properties of perovskite crystals could reveal further possibilities for recognizing these improvements toward device functionality. In this context, this review discusses the material properties of two-dimensional halide perovskites and related optoelectronic devices, aiming particularly for solar cell applications.
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Liu J, Kang J, Chen S, White JJ, Yin H, Liu P, Zhao H, Wang Y. Effects of compositional engineering and surface passivation on the properties of halide perovskites: a theoretical understanding. Phys Chem Chem Phys 2020; 22:19718-19724. [DOI: 10.1039/d0cp02896g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Halide perovskite solar cells have demonstrated high performance and moisture stability via compositional engineering and surface passivation.
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Affiliation(s)
- Junxian Liu
- School of Environment and Science
- Centre for Clean Environment and Energy
- Griffith University
- Gold Coast
- Australia
| | - Jian Kang
- School of Environment and Science
- Centre for Clean Environment and Energy
- Griffith University
- Gold Coast
- Australia
| | - Shan Chen
- School of Environment and Science
- Centre for Clean Environment and Energy
- Griffith University
- Gold Coast
- Australia
| | - Jessica Jein White
- School of Environment and Science
- Centre for Clean Environment and Energy
- Griffith University
- Gold Coast
- Australia
| | - Huajie Yin
- School of Environment and Science
- Centre for Clean Environment and Energy
- Griffith University
- Gold Coast
- Australia
| | - Porun Liu
- School of Environment and Science
- Centre for Clean Environment and Energy
- Griffith University
- Gold Coast
- Australia
| | - Huijun Zhao
- School of Environment and Science
- Centre for Clean Environment and Energy
- Griffith University
- Gold Coast
- Australia
| | - Yun Wang
- School of Environment and Science
- Centre for Clean Environment and Energy
- Griffith University
- Gold Coast
- Australia
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