摘要
A series of organic solar cells（OSCs） are prepared with PTB7：PC71 BM as the host materials and DIB-SQ as the third component. The power conversion efficienty（PCE） of OSCs can be improved from 6.79% to 7.92% by incorporating 6 wt%DIB-SQ into donors, resulting from the enhanced short circuit current density（JSC and fill factor（FF）. The increased JSCof the optimized ternary OSCs should be attributed to the enhanced photon harvesting of teranry active layer by incorporating DIB-SQ. Meanwhile, FF of the optimized ternary OSCs should be due to the optimied phase separation. The open circuit voltage（VOC） of tenray OSCs can be maintained at a constant of 0.75 V, indicating that all photogenerated holes willl be transported along the channels formed by PTB7.
A series of organic solar cells（OSCs） are prepared with PTB7：PC71 BM as the host materials and DIB-SQ as the third component. The power conversion efficienty（PCE） of OSCs can be improved from 6.79% to 7.92% by incorporating 6 wt%DIB-SQ into donors, resulting from the enhanced short circuit current density（JSC and fill factor（FF）. The increased JSCof the optimized ternary OSCs should be attributed to the enhanced photon harvesting of teranry active layer by incorporating DIB-SQ. Meanwhile, FF of the optimized ternary OSCs should be due to the optimied phase separation. The open circuit voltage（VOC） of tenray OSCs can be maintained at a constant of 0.75 V, indicating that all photogenerated holes willl be transported along the channels formed by PTB7.
作者
齐慧欣
余泊含
刘赛
张苗
马晓玲
王健
张福俊
Hui-Xin Qi1, Bo-Han Yu1, Sai Liu1, Miao Zhang1, Xiao-Ling Ma1, Jian Wang2, and Fu-Jun Zhang1(1 Key Laboratory of Luminescence and Optical Information of Mimstry of Education, Beijing Jiaotong University, Beijing 100044, China; 2College of Physics and Electronic Engineering, Taishan University, Taian 271021, Chin)
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.61675017,61377029,and 61705161)
the National Training Program of Innovation and Entrepreneurship for Undergraduates,China(Grant No.170170010)
