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Control of Charge Transport in the Perovskite CH 3 NH 3 PbI 3 Thin Film
Author(s) -
Shi Jiangjian,
Wei Huiyun,
Lv Songtao,
Xu Xin,
Wu Huijue,
Luo Yanhong,
Li Dongmei,
Meng Qingbo
Publication year - 2015
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.201402815
Subject(s) - perovskite (structure) , thin film , doping , charge carrier , materials science , analytical chemistry (journal) , charge carrier density , inorganic chemistry , chemistry , nanotechnology , crystallography , organic chemistry , optoelectronics
Carrier density and transport properties in the CH 3 NH 3 PbI 3 thin film have been investigated. It is found that the carrier density, the depletion field, and the charge collection and transport properties in the CH 3 NH 3 PbI 3 absorber film can be controlled effectively by different concentrations of reactants. That is, the carrier properties and the self‐doping characteristics in CH 3 NH 3 PbI 3 films are strongly influenced by the reaction thermodynamic and kinetic processes. Furthermore, by employing mixed solvents with ethanol and isopropanol to deposit the CH 3 NH 3 PbI 3 film, the charge collection and transport efficiencies are improved significantly, thereby yielding an overall enhanced cell performance.