S-1805/Ag/Au Hybrid Transparent Electrodes for ITO-free Flexible Organic Photovoltaics

作     者：WEN Xuemei YI Fangshun JI Jinhai BI Yangang ZHANG Wenyi WANG Wenquan 

作者机构：State Key Laboratory of Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin UniversityChangchun 130012P.R.China College of PhysicsJilin UniversityChangchun 130012P.R.China Systems Engineering Research InstituteBeijing 100094P.R.China 

出 版 物：《Chemical Research in Chinese Universities》 (高等学校化学研究（英文版）)

年 卷 期：2019年第35卷第3期

页      面：509-513页

核心收录：

学科分类：07[理学] 0703[理学-化学] 

基　　金：the National Key Research and Development Program of China(No.2017YFB0404500) the National Natural Science Foundation of China(Nos.61705075,61505065,61605056,and 61675085) the China Postdoctoral Science Foundation(No.2016M600230) 

主　　题：Ultrathin metal film Hybrid transparent electrode Flexible organic photovoltaics 

摘      要：We fabricated an S-1805/Ag/Au hybrid transparent electrode based on 4.4 lini ultrathin Au film, which exhibited a high transparency(T=78% at 550 nm), a low sheet resistance(Rs=70Ωl/sq), and an extremely smooth surface(roughness=0.37 nm). The three-dimensional(3D) island growth mode of 4.4 nm Au film was resisted by tlie chemical bonding effect of the nonconductive S-1805 film and the wetting behavior of 0.6 nm Ag layer. The S-1805/Ag/Au hybrid transparent electrodes were used as the replacement of ITO anodes in flexible organic photovoltaics(OPVs), and the S-1805/Ag/Au-based OP Vs resulted in the similar power conversion efficiency compared to ITO-based devices. High flexibility and mechanical robustness were demonstrated in the ITO-free OPVs without obvious degeneration in device performance after over 2000 repeated bending cycles.