Efficient planar heterojunction perovskite solar cells employing graphene oxide as hole conductor
Zhongwei Wu(The Fifth People’s Hospital of Suzhou), Sai Bai(State Key Laboratory of Silicon Materials), Jian Xiang(The Fifth People’s Hospital of Suzhou), Zhongcheng Yuan(The Fifth People’s Hospital of Suzhou), Yingguo Yang(Chinese Academy of Sciences), Wei Cui(The Fifth People’s Hospital of Suzhou), Xingyu Gao(Chinese Academy of Sciences), Zhuang Liu(The Fifth People’s Hospital of Suzhou), Yizheng Jin(State Key Laboratory of Silicon Materials), Baoquan Sun(The Fifth People’s Hospital of Suzhou)
Cited by 375
Abstract
Graphene oxide (GO) is employed as a hole conductor in inverted planar heterojunction perovskite solar cells, and the devices with CH₃NH₃PbI₃-xClx as absorber achieve an efficiency of over 12%. The perovskite film grown on GO exhibits enhanced crystallization, high surface coverage ratio as well as preferred in-plane orientation of the (110) plane. Efficient hole extraction from the perovskite to GO is demonstrated.
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