Improving efficiency of planar hybrid CH3NH3PbI3-xClx perovskite solar cells by isopropanol solvent treatment
作者： Xueyan Wang , Xiaodong Li , Gang Tang , Lixiao Zhao , Wenjun Zhang
DOI: 10.1016/J.ORGEL.2015.05.043
关键词: Heterojunction 、 Materials science 、 Energy conversion efficiency 、 Hybrid solar cell 、 Perovskite (structure) 、 Fabrication 、 Photocurrent 、 PEDOT:PSS 、 Chemical engineering 、 Inorganic chemistry 、 Solution process
摘要: Abstract Hybrid organic/inorganic perovskite planar heterojunction (PHJ) solar cells are becoming one of the most competitive emerging technologies. Here, devices (ITO/PEDOT:PSS/CH3NH3PbI3−xClx/PC60BM/C60/Al) fabricated based on solution process. A power conversion efficiency (PCE) up to 13.1% was obtained after isopropanol (IPA) solvent treatment, which 9% improvement than that original devices. Photocurrent hysteresis could be reduced a certain extent by introducing IPA treatment. Solvent treatment can remove as-grown impurities like CH3NH3I and defects formed during device fabrication. We also demonstrated electrical optical properties films were improved. The addition IPA-treated facilitates formation relatively smooth PC60BM films. This work provides very simple but effective strategy enhance cells.
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