空气环境中不同反溶剂对CH_3NH_3PbI_3钙钛矿太阳电池光电性能的影响研究  

Influence of different anti-solvents on photoelectric property of CH_3NH_3PbI_3 perovskite solar cells fabricated under fully open air conditions

作　　者：张乾隆 管明婧 王飞[1] 韩国涛 陈翌庆[1] 

机构地区：[1]合肥工业大学材料科学与工程学院,合肥安徽230009

出　　处：《电子元件与材料》2017年第12期84-88,94,共6页Electronic Components And Materials

基　　金：国家自然科学基金资助项目(No.21071039)

摘　　要：在一步溶液法制备钙钛矿薄膜的工艺中,溶剂环境是决定薄膜质量的关键因素。本文以全空气环境中,甲苯、氯苯、乙醚、乙酸乙酯这四种常见的反溶剂为研究对象,重点比较研究了不同反溶剂对钙钛矿多晶薄膜的结晶性、形貌、覆盖率以及器件光电转换效率的影响。研究表明:在相对湿度(RH)高达70%的环境下,相较于其他三种反溶剂,乙酸乙酯不仅能控制钙钛矿薄膜的结晶速率,还表现出优异的抗湿性,因此钙钛矿电池的效率达到17.8%,明显优于使用其他反溶剂。For the fabrication of perovskite film via the one-step deposition method, anti-solvent becomes the critical factor to decide the quality of the film. In this work, the influence of four different anti-solvents, which were toluene, chlorobenzene, diethyl ether and ethyl acetate, on crystallinity, morphology and coverage of perovskite film and subsequently photoelectric property of perovskite solar cells were reported. Under fully open air conditions with the relative humidity （RH） as high as 70%, the best device fabricated through the ethyl acetate extraction exhibits a power conversion efficiency of 17.8%, appreciably outperforming the device with other anti-solvent treatments, which can be ascribed to control of crystallization rate and outstanding humidity resistance of perovskite layer.

关 键 词：钙钛矿太阳能电池 全空气环境 高湿度 溶液-步法 不同反溶剂 乙酸乙酯 

分 类 号：TM914.4[电气工程—电力电子与电力传动]