Single-junction polymer solar cells with high efficiency and photovoltage

被引：0

作者：

He Z. ^{[1
]}

Xiao B. ^{[1
]}

Liu F. ^{[2
]}

Wu H. ^{[1
]}

Yang Y. ^{[3
]}

Xiao S. ^{[3
]}

Wang C. ^{[4
]}

Russell T.P. ^{[2
]}

Cao Y. ^{[1
]}

机构：

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

[2] Department of Polymer Science and Engineering, University of Massachusetts, Amherst, 01003, MA

[3] 1-material Inc., 2290 St-Francois, Dorval, H9P 1K2, QC

[4] Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, 94720, CA

来源：

Wu, Hongbin (hbwu@scut.edu.cn) | 2015年 / Nature Publishing Group卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Conversion efficiency - Semiconductor junctions - Solar power generation;

D O I：

10.1038/nphoton.2015.6

中图分类号：

学科分类号：

摘要：

Polymer solar cells are an exciting class of next-generation photovoltaics, because they hold promise for the realization of mechanically flexible, lightweight, large-area devices that can be fabricated by room-temperature solution processing. High power conversion efficiencies of ∼10% have already been reported in tandem polymer solar cells. Here, we report that similar efficiencies are achievable in single-junction devices by reducing the tail state density below the conduction band of the electron acceptor in a high-performance photoactive layer made from a newly developed semiconducting polymer with a deepened valence energy level. Control over band tailing is realized through changes in the composition of the active layer and the structure order of the blend, both of which are known to be important factors in cell operation. The approach yields cells with high power conversion efficiencies (∼9.94% certified) and enhanced photovoltage. © 2015 Macmillan Publishers Limited.

引用

页码：174 / 179

页数：5