摘要
近年来有机太阳电池效率突飞猛进,单结电池效率已经突破18%,然而这些高效率电池的活性层厚度通常只有100 nm左右,随着厚度增加,电池效率下降明显.为了实现有机太阳电池的产业化,发展对厚度不敏感,且可适用于卷对卷印刷制备的高性能厚膜电池势在必行.本文通过在D18:Y6二元活性层中加入少量富勒烯受体PC61BM,使得电池对厚度的敏感性显著降低. PC61BM的加入使厚膜活性层的电子和空穴迁移率明显提高,载流子传输更加平衡,并且显著降低了陷阱辅助复合.D18:Y6:PC61BM(1:1.6:0.2)三元电池在活性层厚度超过300 nm时,还能保持16%以上的效率,是目前性能最优异的厚膜有机太阳电池之一.
作者
Jianqiang Qin
Lixiu Zhang
Zuo Xiao
Shanshan Chen
Kuan Sun
Zhigang Zang
Chenyi Yi
Yongbo Yuan
Zhiwen Jin
Feng Hao
Yuanhang Cheng
Qinye Bao
Liming Ding
秦建强;张立秀;肖作;陈珊珊;孙宽;臧志刚;易陈谊;袁永波;靳志文;郝锋;程远航;保秦烨;丁黎明(Key Laboratory of Low-grade Energy Utilization Technologies and Systems(MoE),School of Energy and Power Engineering,Chongqing University,Chongqing University,Chongqing 400044,China;Center for Excellence in Nanoscience(CAS),Key Laboratory of Nanosystem and Hierarchical Fabrication(CAS),National Center for Nanoscience and Technology,Beijing 100190,China;Department of Electrical Engineering,Tsinghua University,Beijing 100084,China;School of Physics and Electronics,Central South University,Changsha 410083,China;School of Physical Science and Technology,Lanzhou University,Lanzhou 730000,China;School of Materials and Energy,University of Electronic Science and Technology of China,Chengdu 611731,China;Solar Energy Research Institute of Singapore,National University of Singapore,Singapore 117574,Singapore;School of Physics and Electronic Science,East China Normal University,Shanghai 200241,China)
基金
the National Key Research and Development Program of China (2017YFA0206600)
the National Natural Science Foundation of China (51773045, 21772030, 51922032 and 21961160720)
Fundamental Research Funds for the Central Universities (2020CDJQY-A055)
the Youth Association for Promoting Innovation (CAS) for financial support。
