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Perovskite solar cells with 18.21% efficiency and area over 1 cm2 fabricated by heterojunction engineering

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  • Yongzhen Wu

    (Photovoltaic Materials Unit, National Institute for Materials Science)

  • Xudong Yang

    (State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University)

  • Wei Chen

    (Photovoltaic Materials Unit, National Institute for Materials Science)

  • Youfeng Yue

    (Photovoltaic Materials Unit, National Institute for Materials Science)

  • Molang Cai

    (Photovoltaic Materials Unit, National Institute for Materials Science)

  • Fengxian Xie

    (Photovoltaic Materials Unit, National Institute for Materials Science)

  • Enbing Bi

    (State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University)

  • Ashraful Islam

    (Photovoltaic Materials Unit, National Institute for Materials Science)

  • Liyuan Han

    (Photovoltaic Materials Unit, National Institute for Materials Science
    State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University)

Abstract

Perovskite solar cells (PSCs) are promising low-cost photovoltaic technologies with high solar-to-electric power conversion efficiency (PCE). The heterojunction structure between perovskite and charge extraction layers is crucial to the photovoltaic performance of PSCs. Here, we report efficient inverted-structured PSCs with a perovskite–fullerene graded heterojunction (GHJ), in which the electron-accepting material is distributed in the perovskite layer with a gradient. This structure can enhance the PCE as it improves the photoelectron collection and reduces recombination loss, especially for the formamidinium cation-based perovskite. The conformal fullerene coating on perovskite during the GHJ deposition achieves a full coverage with reduced layer thickness, thus minimizing the resistive loss in larger sized devices. Our strategy enables the fabrication of centimetre-scale PSCs showing high efficiency with small hysteresis and good stability. A PCE of 18.21% was certified by an independent institution for cells with an aperture area of 1.022 cm2.

Suggested Citation

  • Yongzhen Wu & Xudong Yang & Wei Chen & Youfeng Yue & Molang Cai & Fengxian Xie & Enbing Bi & Ashraful Islam & Liyuan Han, 2016. "Perovskite solar cells with 18.21% efficiency and area over 1 cm2 fabricated by heterojunction engineering," Nature Energy, Nature, vol. 1(11), pages 1-7, November.
    • Handle: RePEc:nat:natene:v:1:y:2016:i:11:d:10.1038_nenergy.2016.148
    DOI: 10.1038/nenergy.2016.148
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    Cited by:

    1. Shuai You & Felix T. Eickemeyer & Jing Gao & Jun-Ho Yum & Xin Zheng & Dan Ren & Meng Xia & Rui Guo & Yaoguang Rong & Shaik M. Zakeeruddin & Kevin Sivula & Jiang Tang & Zhongjin Shen & Xiong Li & Micha, 2023. "Bifunctional hole-shuttle molecule for improved interfacial energy level alignment and defect passivation in perovskite solar cells," Nature Energy, Nature, vol. 8(5), pages 515-525, May.
    2. Jamal, M.S. & Bashar, M.S. & Hasan, A.K. Mahmud & Almutairi, Zeyad A. & Alharbi, Hamad F. & Alharthi, Nabeel H. & Karim, Mohammad R. & Misran, H. & Amin, Nowshad & Sopian, Kamaruzzaman Bin & Akhtaruzz, 2018. "Fabrication techniques and morphological analysis of perovskite absorber layer for high-efficiency perovskite solar cell: A review," Renewable and Sustainable Energy Reviews, Elsevier, vol. 98(C), pages 469-488.
    3. Sajid, Sajid & Huang, Hao & Ji, Jun & Jiang, Haoran & Duan, Mingjun & Liu, Xin & Liu, Benyu & Li, Meicheng, 2021. "Quest for robust electron transporting materials towards efficient, hysteresis-free and stable perovskite solar cells," Renewable and Sustainable Energy Reviews, Elsevier, vol. 152(C).
    4. Yequan Xiao & Zeyu Fan & Mamiko Nakabayashi & Qiaoqiao Li & Liujiang Zhou & Qian Wang & Changli Li & Naoya Shibata & Kazunari Domen & Yanbo Li, 2022. "Decoupling light absorption and carrier transport via heterogeneous doping in Ta3N5 thin film photoanode," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    5. MiJoung Kim & MoonHoe Kim & JungSeock Oh & NamHee Kwon & Yoonmook Kang & JungYup Yang, 2019. "Phenyl-C61-Butyric Acid Methyl Ester Hybrid Solution for Efficient CH 3 NH 3 PbI 3 Perovskite Solar Cells," Sustainability, MDPI, vol. 11(14), pages 1-11, July.

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