Steric Impediment of Ion Migration Contributes to Improved Operational Stability of Perovskite Solar Cells
نویسندگان
چکیده
منابع مشابه
Stability Issues on Perovskite Solar Cells
Organo lead halide perovskite materials like methylammonium lead iodide (CH3NH3PbI3) and formamidinium lead iodide (HC(NH2)2PbI3) show superb opto-electronic properties. Based on these perovskite light absorbers, power conversion efficiencies of the perovskite solar cells employing hole transporting layers have increased from 9.7% to 20.1% within just three years. Thus, it is apparent that pero...
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Ion migration has been proposed as a possible cause of photovoltaic current-voltage hysteresis in hybrid perovskite solar cells. A major objection to this hypothesis is that hysteresis can be reduced by changing the interfacial contact materials; however, this is unlikely to significantly influence the behaviour of mobile ionic charge within the perovskite phase. Here, we show that the primary ...
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ژورنال
عنوان ژورنال: Advanced Materials
سال: 2020
ISSN: 0935-9648,1521-4095
DOI: 10.1002/adma.201906995