Simultaneous enhanced efficiency and thermal stability in organic solar cells from a polymer acceptor additive

作者:Yang, WY (Yang, Wenyan)[ 1 ] ; Luo, ZH (Luo, Zhenghui)[ 2 ] ; Sun, R (Sun, Rui)[ 1 ] ; Guo, J (Guo, Jie)[ 1 ] ; Wang, T (Wang, Tao)[ 1 ] ; Wu, Y (Wu, Yao)[ 1 ] ; Wang, W (Wang, Wei)[ 1 ] ; Guo, J (Guo, Jing)[ 1 ] ; Wu, Q (Wu, Qiang)[ 1 ] ; Shi, MM (Shi, Mumin)[ 1 ] ; Li, HN (Li, Hongneng)[ 1 ] ; Yang, CL (Yang, Chuluo)[ 2 ] ; Min, J (Min, Jie)[ 1,3,4 ] 

NATURE COMMUNICATIONS

卷: 11 期: 1

文献号: 1218

DOI: 10.1038/s41467-020-14926-5

出版年:MAR 5 2020

文献类型:Article

摘要

The thermal stability of organic solar cells is critical for practical applications of this emerging technology. Thus, effective approaches and strategies need to be found to alleviate their inherent thermal instability. Here, we show a polymer acceptor-doping general strategy and report a thermally stable bulk heterojunction photovoltaic system, which exhibits an improved power conversion efficiency of 15.10%. Supported by statistical analyses of device degradation data, and morphological characteristics and physical mechanisms study, this polymer-doping blend shows a longer lifetime, nearly keeping its efficiency (t = 800h) under accelerated aging tests at 150 C-o. Further analysis of the degradation behaviors indicates a bright future of this system in outer space applications. Notably, the use of polymer acceptor as a dual function additive in the other four photovoltaic systems was also confirmed, demonstrating the good generality of this polymer-doping strategy. Thermal instability is a critical bottleneck for bulk heterojunction organic solar cells. Here Yang et al. use barely 1wt% of a polymer acceptor as an additive to simultaneously improve the device efficiency and thermal stability of several state-of-the-art organic photovoltaic systems at high temperatures.

关键词

KeyWords Plus:SMALL-MOLECULE DONOR; FULLERENE-POLYMER; HIGHLY EFFICIENT; ALL-POLYMER; PERFORMANCE; TEMPERATURE; CHALLENGES; INSIGHTS

作者信息

通讯作者地址:

Wuhan University Wuhan Univ, Inst Adv Studies, Wuhan 430072, Peoples R China.

Chinese Academy of Sciences Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China.

Zhengzhou University Zhengzhou Univ, Key Lab Mat Proc & Mold, Minist Educ, Zhengzhou 450002, Peoples R China.

通讯作者地址: Min, J (通讯作者)

Wuhan Univ, Inst Adv Studies, Wuhan 430072, Peoples R China.

通讯作者地址: Min, J (通讯作者)

Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China.

通讯作者地址: Min, J (通讯作者)

Zhengzhou Univ, Key Lab Mat Proc & Mold, Minist Educ, Zhengzhou 450002, Peoples R China.

地址:

[ 1 ]‎ Wuhan Univ, Inst Adv Studies, Wuhan 430072, Peoples R China

[ 2 ]‎ Wuhan Univ, Dept Chem, Hubei Key Lab Organ & Polymer Optoelect Mat, Wuhan 430072, Peoples R China

[ 3 ]‎ Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[ 4 ]‎ Zhengzhou Univ, Key Lab Mat Proc & Mold, Minist Educ, Zhengzhou 450002, Peoples R China

电子邮件地址:min.jie@whu.edu.cn