Improving photovoltaic parameters of all-polymer solar cells through integrating two polymeric donors  

作　　者：Kang An Feng Peng Wenkai Zhong Wanyuan Deng Difei Zhang Lei Ying Hongbin Wu Fei Huang Yong Cao 

机构地区：[1]Institute of Polymer Optoelectronic Materials and Devices,State Key Laboratory of Luminescent Materials and Devices,South China University of Technology,Guangzhou,510640,China

出　　处：《Science China Chemistry》2021年第11期2010-2016,共7页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(21822505);Guangdong Natural Science Foundation(2017A030306011,2019B030302007);the National Key Research and Development Program of China(2019YFA0705900)。

摘　　要：The incorporation of an additional component into the bulk-heterojunction light-harvesting layer of polymer solar cells has been considered as an effective strategy to enhance photovoltaic performance.Here we demonstrated that the photovoltaic parameters of all-polymer solar cells could be enhanced upon replacing a certain ratio of electron-donating polymer PTz BI-o F with a widely used wide-bandgap polymer donor PM6.The photoluminescent characterizations confirmed the F?rster resonance energy transfer from incorporated PM6 to PTz BI-o F.Moreover,the combination of Fourier-transform photocurrent spectroscopy and electroluminescence external quantum efficiencies measurements demonstrated reduced non-radiative recombination energy loss upon the incorporation of PM6,resulting in a slightly enhanced open-circuit voltage of 0.88 V of the ternary cell regarding the binary PTz BI-o F:PFA1 device.The optimized ternary blend devices comprising of PTz BI-o F:PM6:PFA1 presented an impressively high power conversion efficiency of 16.3%,and the efficiency remains 15%on a device with an enlarged effective area of 1 cm^(2),demonstrating the great potential of these all-PSCs for potential applications.

关 键 词：all-polymer solar cells ternary blend high performance large area device 

分 类 号：TQ317[化学工程—高聚物工业] TM914.4[电气工程—电力电子与电力传动]