Control of Charge Transport in the Perovskite CH3NH3PbI3 Thin Film |
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| Authors: | Jiangjian Shi Huiyun Wei Songtao Lv Xin Xu Huijue Wu Prof Yanhong Luo Prof Dongmei Li Prof Qingbo Meng |
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| Institution: | Key Laboratory for Renewable Energy, Beijing Key Laboratory for New Energy Materials and Devices, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (P. R. China) |
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| Abstract: | Carrier density and transport properties in the CH3NH3PbI3 thin film have been investigated. It is found that the carrier density, the depletion field, and the charge collection and transport properties in the CH3NH3PbI3 absorber film can be controlled effectively by different concentrations of reactants. That is, the carrier properties and the self‐doping characteristics in CH3NH3PbI3 films are strongly influenced by the reaction thermodynamic and kinetic processes. Furthermore, by employing mixed solvents with ethanol and isopropanol to deposit the CH3NH3PbI3 film, the charge collection and transport efficiencies are improved significantly, thereby yielding an overall enhanced cell performance. |
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| Keywords: | charge transport kinetics perovskite phases solar cells thermodynamics |
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