An Organic Small Molecule as a Solid Additive in Non-Fullerene Organic Solar Cells with Improved Efficiency and Operational Stability

作     者：Yi-Nuo Yang Xiao-Ming Li Shi-Jie Wang Xiao-Peng Duan Yun-Hao Cai Xiao-Bo Sun Dong-Hui Wei Wei Ma Yan-Ming Sun Yi-Nuo Yang;Xiao-Ming Li;Shi-Jie Wang;Xiao-Peng Duan;Yun-Hao Cai;Xiao-Bo Sun;Dong-Hui Wei;Wei Ma;Yan-Ming Sun

作者机构：School of ChemistryBeihang UniversityBeijing100191China State Key Laboratory for Mechanical Behavior of MaterialsXi’an Jiaotong UniversityXi’an710049China The College of Chemistry and Molecular EngineeringZhengzhou UniversityZhengzhou450001China 

出 版 物：《Chinese Journal of Polymer Science》 (高分子科学（英文版）)

年 卷 期：2023年第41卷第2期

页      面：194-201页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the National Natural Science Foundation of China(Nos.21975012 and 51825301) 

主　　题：Organic solid additive Morphology Dual additives Organic solar cells Operational stability 

摘      要：The use of additive is an effective approach to optimize the active layer morphology and improve the power conversion efficiency(PCE)of organic solar cells(OSCs).However,residual solvent additives always lead to undesirably compromise the stability of *** this work,an organic small molecule BBT-Cl was designed and used as a novel solid additive to partly replace solvent additive to fabricate highperformance *** synergistic effect of the dual additives on the optical property,morphology and photovoltaic characteristics of the PM6:Y6 based non-fullerene OSCs have been systematically *** introduction of BBT-Cl could effectively enhance the crystallinity of the blend and promote charge extraction and ***,the OSCs processed by the dual additives exhibit a high PCE of 17.73%,which is obviously higher than OSCs with CN additive(16.48%).Meanwhile,BBT-Cl based dual additives treatment has also been successfully introduced into another two non-fullerene OSCs to verify its general ***,20%PCE aging is significantly prolonged from 720 min to 2880 min for the devices proceeded with the dual *** work highlights the great potential of solid additive in the fabrication of efficient OSCs with excellent stability.