材料科学
聚合物太阳能电池
光电探测器
聚合物
光电子学
异质结
接受者
电子迁移率
活动层
光伏系统
能量转换效率
纳米技术
图层(电子)
复合材料
电气工程
物理
工程类
薄膜晶体管
凝聚态物理
作者
Yanfei Zhao,Tao Liu,Baoqi Wu,Song Zhang,Nathaniel Prine,Long Zhang,Shuting Pang,Bingyan Yin,Long Ye,Xiaodan Gu,Gang Yu,Chunhui Duan,Fei Huang,Yong Cao
标识
DOI:10.1021/acs.chemmater.1c00825
摘要
All-polymer solar cells (all-PSCs) and all-polymer photodetectors (all-PPDs) are promising for application in flexible electronics, but their performance is greatly limited by the lack of polymer acceptors and the difficulties in morphology control. Herein, we report the use of a high-mobility n-type polymer semiconductor, PNDI-DTBT, for fabricating high-performance all-PSCs and all-PPDs. By pairing PNDI-DTBT with a matched polymer donor, a prominent power conversion efficiency of 8.5% was obtained in all-PSCs, demonstrating the great potential of high-mobility n-type polymers with a conventional donor–acceptor skeleton for photovoltaic application. Moreover, all-PPDs with a low dark current density of 1.32 × 10–8 A cm–2 at −0.1 V bias and a high specific detectivity of 4.77 × 1012 Jones were achieved, which belong to the best results of organic photodetectors. Morphology investigations revealed that the formation of a bicontinuous interpenetrating network with optimal phase separation scale, high domain purity, and preferential vertical composition distribution in the bulk-heterojunction active layer contribute to the remarkable device performance. These results suggest that combining high-mobility n-type polymers and morphology optimization is fruitful to achieving high-performance all-PSCs and all-PPDs.
科研通智能强力驱动
Strongly Powered by AbleSci AI