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Author Shi, Jiangjian ♦ Xu, Xin ♦ Zhang, Huiyin ♦ Luo, Yanhong ♦ Li, Dongmei ♦ Meng, Qingbo
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ CARRIERS ♦ CHARGE TRANSPORT ♦ ELECTRIC FIELDS ♦ ELECTRONS ♦ EXTRACTION ♦ FILMS ♦ HETEROJUNCTIONS ♦ HYSTERESIS ♦ IONS ♦ MIGRATION ♦ PEROVSKITE ♦ SOLAR CELLS
Abstract The intrinsic charge response and hysteresis characteristic in the perovskite solar cell has been investigated by an electrically modulated transient photocurrent technology. An ultraslow charge response process in the timescale of seconds is observed, which can be well explained by the ion migration in the perovskite CH{sub 3}NH{sub 3}PbI{sub 3} film driven by multiple electric fields derived from the heterojunction depletion charge, the external modulation, and the accumulated ion charge. Furthermore, theoretical calculation of charge transport reveals that the hysteresis behavior is also significantly influenced by the interfacial charge extraction velocity and the carrier transport properties inside the cell.
ISSN 00036951
Educational Use Research
Learning Resource Type Article
Publisher Date 2015-10-19
Publisher Place United States
Journal Applied Physics Letters
Volume Number 107
Issue Number 16


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