Novel donor-acceptor-donor structured small molecular hole transporting materials for planar perovskite solar cells  

作　　者：Xiaojuan Zhao Yunyun Quan Han Pan Qingyun Li Yan Shen Zu-Sheng Huang Mingkui Wang 

机构地区：[1]Wuhan National Laboratory for Optoelectronics,School of Optical and Electronic Information,Huazhong University of Science and Technology,Wuhan 430074,Hubei,China [2]School of Pharmaceutical Sciences,Wenzhou Medical University,Wenzhou 325035,Zhejiang,China [3]Wenzhou Institute of Biomaterials and Engineering,CAS,Wenzhou 325011,Zhejiang,China

出　　处：《Journal of Energy Chemistry》2019年第5期85-92,共8页能源化学（英文版）

基　　金：Financial support from the 973 Program of China(No.2014CB643506);the NSFC Major International(Regional)Joint Research Project NSFC-SNSF(51661135023);NSFC(21673091,21702147);the Fundamental Research Funds For the Central Universities HUST(2018KFYXKJC034);the Opening Project of Zhejiang Provincial Top Key Discipline of Pharmaceutical Sciences

摘　　要：Novel donor-acceptor-donor structured small molecular hole transporting materials are developed through a facile route by crosslinking dithienopyrrolobenzothiadiazole and phenothiazine or triarylamine-based donor units. The strong push/pull electron capability of dithienopyrrolobenzothiadiazole/ phenothiazine and large π-conjugated dithienopyrrolobenzothiadiazole facilitate hole mobility and high conductivity. The devices using the dithienopyrrolobenzothiadiazole/phenothiazine-based hole trans-porting material achieved a power conversion efficiency of 14.2% under 1 sun illumination and improved stability under 20% relative humidity at room temperature without encapsulation. The present finding highlights the potential of dithienopyrrolobenzothiadiazole-based donor-acceptor-donor small molecular hole transporting materials for perovskite solar cells.Novel donor-acceptor-donor structured small molecular hole transporting materials are developed through a facile route by crosslinking dithienopyrrolobenzothiadiazole and phenothiazine or triarylamine-based donor units. The strong push/pull electron capability of dithienopyrrolobenzothiadiazole/phenothiazine and large π-conjugated dithienopyrrolobenzothiadiazole facilitate hole mobility and high conductivity. The devices using the dithienopyrrolobenzothiadiazole/phenothiazine-based hole transporting material achieved a power conversion efficiency of 14.2% under 1 sun illumination and improved stability under 20% relative humidity at room temperature without encapsulation. The present finding highlights the potential of dithienopyrrolobenzothiadiazole-based donor-acceptor-donor small molecular hole transporting materials for perovskite solar cells.

关 键 词：HOLE-TRANSPORT material DONOR ACCEPTOR PEROVSKITE Solar cell 

分 类 号：O4[理学—物理]