基于自组装修饰银纳米线透明电极的柔性有机太阳能电池  

Flexible Organic Solar Cells Based on Self-assembly Modified Silver Nanowires Transparent Electrode

作　　者：吴江[1,2] 李右占 汤浩 易雪亭[1,2] 刘泽坤 谢志元 JiangWu;You-zhan Li;Hao Tang;Xue-ting Yi;Ze-kun Liu;Zhi-yuan Xie(State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022;School of Applied Chemistry and Engineering,University of Science and Technology of China,Hefei 230026)

机构地区：[1]高分子物理与化学国家重点实验室中国科学院长春应用化学研究所,长春130022 [2]中国科学技术大学应用化学与工程学院,合肥230026

出　　处：《高分子学报》2023年第1期78-86,共9页Acta Polymerica Sinica

基　　金：国家重点基础研究发展计划(项目号2019YFA0705900);吉林省科技发展计划(项目号20210201036GX);国家自然科学基金(基金号51803207,21774122,51973209)资助项目.

摘　　要：银纳米线(AgNWs)透明电极具有出色的挠曲性和高电导率,是一类非常有潜力的柔性透明电极材料.然而AgNWs透明电极还存在表面粗糙度大、与衬底的附着力差、表面功函数与活性层能级不匹配等问题.针对上述问题,采用刮涂方法将AgNWs嵌入聚酰亚胺薄膜中,获得表面平整的AgNWs柔性透明电极,并通过Ag与巯基基团相互作用将五氟苯硫酚自组装到AgNWs电极表面,使AgNWs电极表面功函数从未处理的−4.88 eV提高到−5.06 eV,从而使其与活性层能级更加匹配.利用该电极作为柔性透明电极,在不采用任何阳极界面层的情况下制备的柔性有机太阳能电池最佳能量转换效率达到11.77%.本工作为AgNWs柔性电极的制备及功函数调控提供了新的研究思路,并为发展基于AgNWs柔性电极的高效柔性有机太阳能电池提供了一种简单有效的解决方案.Silver nanowires(AgNWs)are a kind of flexible transparent electrode material with superior flexibility and high conductivity.However,AgNWs-based transparent electrode films always suffer some problems,such as large surface roughness,poor adhesion to the substrate,and mismatching between its work function and energy level of the active layer.In this work,the embedded AgNWs in polyimide(PI)substrate was prepared by bladecoating method,which demonstrates the AgNWs transparent electrode with smooth surface.Pentafluorothiophenol(PFTP)was self-assembled on the surface of AgNWs through interaction between Ag and sulfhydryl group,so that the work function of AgNWs electrode is increased from−4.88 eV to−5.06 eV,rendering it more matched with the energy level of the active layer.Based on the PFTP-modified AgNWs/PI substrate,the flexible organic solar cell without hole transport layer was fabricated by blade coating,and a power conversion efficiency of 11.77%was obtained.This work provides a novel idea for the preparation and work function regulation of AgNWs-based flexible electrode/substrate,and suggests a simple and effective method for the development of efficient flexible organic solar cells based on AgNWs flexible electrode.

关 键 词：银纳米线 自组装 柔性 有机太阳能 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TB383.1[一般工业技术—材料科学与工程]