材料科学
钙钛矿(结构)
萃取(化学)
杂原子
能量转换效率
电化学
光伏系统
热滞后
磁滞
化学工程
光电子学
化学
结晶学
有机化学
电极
电气工程
物理化学
戒指(化学)
物理
量子力学
工程类
相变
作者
Xianfu Zhang,Xuepeng Liu,Nan Wu,Rahim Ghadari,Songyuan Dai,Ying Wang,Yong Ding,Molang Cai,Zuopeng Qu,Songyuan Dai
标识
DOI:10.1016/j.jechem.2021.09.046
摘要
A series of spiro-type hole transporting materials, spiro-OMeTAD, spiro-SMeTAD and spiro-OSMeTAD, with methoxy, methylsulfanyl or half methoxy and half methylsulfanyl terminal groups are designed and prepared. The impact of varied terminal groups on bulk properties, such as photophysical, electrochemical, thermal, hole extraction, and photovoltaic performance in perovskite solar cells is investigated. It is noted that the terminal groups of the hole transporting material with half methoxy and half methylsulfanyl exhibit a better device performance and decreased hysteresis compared with all methoxy or methylsulfanyl counterparts due to better film-forming ability and improved hole extraction capability. Promisingly, the spiro-OSMeTAD also shows comparable performance than high-purity commercial spiro-OMeTAD. Moreover, the highest power conversion efficiency of the optimized device employing spiro-OSMeTAD exceeding 20% has been achieved.
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