基于氧化石墨烯空穴传输层的钙钛矿太阳能电池  

Perovskite Solar Cells Based on Graphene Oxide Hole Transport Layer

作　　者：王云祥[1,2] 张继华 吴艳花[1,2] 王红航 易子川[2] 张小文[3] 刘黎明[2] WANG Yun-xiang;ZHANG Ji-hua;WU Yan-hua;WANG Hong-hang;YI Zi-chuan;ZHANG Xiao-wen;LIU Li-ming(School of Electronic Science and Engineering, University of Electronic Science and Technology of China,Chengdu 610054, China;Zhongshan Branch of State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Zhongshan Institute, Zhongshan, Guangdong 528400, China;Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology,Guilin, Guangxi 541004, China)

机构地区：[1]电子科技大学电子科学与工程学院,成都610054 [2]电子科技大学中山学院电子薄膜与集成器件国家重点实验室中山分实验室,广东中山528400 [3]桂林电子科技大学广西信息材料重点实验室,广西桂林541004

出　　处：《光子学报》2019年第3期59-65,共7页Acta Photonica Sinica

基　　金：国家自然科学基金项目(Nos.51362031;61571103);中山市引进创新创业科研团队(No.180809162197886)~~

摘　　要：采用溶液旋涂法在平面异质结型钙钛矿电池中引入氧化石墨烯(Graphene oxide,GO),制备了GO、GO∶(PEDOT:PSS)复合薄膜和GO/PEDOT∶PSS双层薄膜作为空穴传输层的电池,其光电转换效率分别为1.86%、7.35%、7.69%,基于PEDOT∶PSS空穴传输层的对照电池的效率为7.38%.主要原因是GO具有绝缘性,作为阳极界面层时,随着GO薄膜厚度增加,器件的串联电阻增大,从而降低了电池的短路电流和效率.为提高GO导电性,并改善其功函数,将GO氨化改性后与PEDOT:PSS组合构成双空穴传输层,所得电池取得了7.69%的较高效率,表明该方式是GO用于钙钛矿电池空穴传输层的有效途径.Graphene Oxide (GO) was introduced as a hole transport layer material in a planar heterojunction perovskite battery by solution spin coating. The photoelectric conversion efficiencies of the prepared cells based on GO, GO∶(PEDOT:PSS) composite film and GO/PEDOT∶PSS double-layer film as hole transport layer are 1.86%, 7.35%, and 7.69%, respectively. And the efficiency of the control cell based on PEDOT∶PSS as the transport layer is 7.38%. The main reason is that graphene oxide has insulation properties. When graphene oxide as the anode interface layer, the series resistance of the device increases with the thickness of the graphene oxide film increases, thereby reducing the short-circuit current and efficiency of the battery. In order to improve the conductivity of graphene oxide and its work function, the oxidation of graphene oxide was combined with PEDOT:PSS to form a two-hole transport layer. The battery achieves a high efficiency of 7.69%, which proves that this is oxidation is an effective way for graphene to be used in the hole transport layer of perovskite cells.

关 键 词：氧化石墨烯 钙钛矿太阳能电池 溶液旋涂法 光电转换效率 空穴传输层 PEDOT∶PSS 

分 类 号：TQ174[化学工程—陶瓷工业]