期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 14, 页码 12382-12390出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.6b16541
关键词
single-crystal-like perovskite grain; merged annealing; solution process; thermal stability; inverted planar perovskite solar cells
资金
- Global Frontier Program through the Global Frontier Hybrid Interface Materials (GFHIM) of the National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning [2013M3A6, B1078874]
- NRF Grant - Korea Government [CD20160979]
We report a simple, low cost, and quite effective method for achieving single-crystal-like CH3NH3PbI3 perovskite leading to a significant enhancement in the performance and stability of inverted planar perovskite solar cells (IPSCs). By employing a merged annealing method during the fabrication of an IPSC for preparing the perovskite CH3NH3PbI3 film, we remarkably increase the crystallinity of the CH3NH3PbI3 film and enhance the device performance and stability. An IPSC with the indium tin oxide/poly(3,4-ethylenedioxythiophene)-poly-(styrenesulfonate)/CH3NH3PbI3 (active layer)/[6,6]-phenyl-C-61-butyric acid methyl ester/Al structure was fabricated using the merged annealing method and exhibited significantly enhanced performance with a high power conversion efficiency of 18.27% and a fill factor of 81.34%. Moreover, since two separate annealing processes are merged in the proposed annealing method, the fabrication step becomes much simpler and easier, leading to a reduction in fabrication costs.
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