期刊
ACS APPLIED MATERIALS & INTERFACES
卷 7, 期 4, 页码 2708-2714出版社
AMER CHEMICAL SOC
DOI: 10.1021/am5077588
关键词
perovskite solar cells; planar-heterojuction; low-pressure chemical vapor deposition; high-quality films; stability
资金
- National Natural Science Foundation of China [51302058]
- CAS Key Laboratory of Materials for Energy Conversion at University of Science and Technology of China (USTC)
Recently, hybrid perovskite solar cells (PSCs) have attracted extensive attention due to their high efficiency and simple preparing process. Herein, a facile low-pressure chemical vapor deposition (LPCVD) technology is first developed to fabricate PSCs, which can effectively reduce the over-rapid intercalating reaction rate and easily overcome this blocking issue during the solution process. As a result, the prepared uniform perovskite films exhibit good crystallization, strong absorption, and long carrier diffusion length. More strikingly, CH3NH3PbI3 absorbers by LPCVD demonstrate excellent moisture-resistant feature even under laser illumination and high-temperature conditions, which indicates that our proprietary method is very suitable for the future low-cost, nonvacuum production of the new generation photovoltaic devices. Finally, high efficiency of 12.73% is successfully achieved under fully open-air conditions. To the best of our knowledge, this is the first report of efficient PSCs with such a high humidity above 60%.
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