Solution-processed CuOx as an efficient hole-extraction layer for inverted planar heterojunction perovskite solar cells

作     者：Zhi-Kai Yu Wei-Fei Fu Wen-Qing Liu Zhong-Qiang Zhang Yu-Jing Liu Jie-Lin Yan Tao Ye Wei-Tao Yang Han-Ying Li Hong-Zheng Chen 

作者机构：State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and Engineering Zhejiang University Hangzhou 310027 China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2017年第28卷第1期

页      面：13-18页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 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：supported by the Major State Basic Research Development Program (No. 2014CB643503) the National Science Foundation for Post-doctoral Scientists of China (No. 2015M580512) partly supported by the program for Innovative Research Team in University of Ministry of Education of China (No. IRT13R54) 

主　　题：CuOx Solution-processing Hole-transporting layer Perovskite solar cells Stable 

摘      要：A solution-processed CuOx film has been successfully integrated as the hole-transporting layer（HTL） for inverted planar heterojunction perovskite solar cells（PVSCs）. The CuOx layer is fabricated by simply spin-coating a copper acetylacetonate（Cu（acac）2） chloroform solution onto ITO glass with high transparency in the visible range. The compact and pinhole-free perovskite film with large grain domains is grown on the CuOx film. The inverted PVSCs with the structure of ITO/CuOx/MAPbI3/PC（61）BM/ZnO/Al are fabricated and show a best PCE of 17.43% under standard AM 1.5G simulated solar irradiation with a VOCof 1.03 V, aJ（SC） of 22.42 mA cm^（-2）, and a fill factor of 0.76, which is significantly higher and more stable than that fabricated from the often used hole-transporting material PEDOT：PSS（11.98%） under the same experimental conditions. The enhanced performance is attributed to the efficient hole extraction through the CuOx layer as well as the high-quality CH3NH3PbI3 films grown on the CuOx. Our results indicate that low-cost and solution-processed CuOx film is a promising HTL for high performance PVSCs with better stability.