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Silicon heterojunction solar cells with up to 26.81% efficiency achieved by electrically optimized nanocrystalline-silicon hole contact layers

Author

Listed:
  • Hao Lin

    (LONGi Green Energy Technology Co., Ltd.
    Sun Yat-sen University)

  • Miao Yang

    (LONGi Green Energy Technology Co., Ltd.)

  • Xiaoning Ru

    (LONGi Green Energy Technology Co., Ltd.)

  • Genshun Wang

    (LONGi Green Energy Technology Co., Ltd.
    Sun Yat-sen University)

  • Shi Yin

    (LONGi Green Energy Technology Co., Ltd.)

  • Fuguo Peng

    (LONGi Green Energy Technology Co., Ltd.)

  • Chengjian Hong

    (LONGi Green Energy Technology Co., Ltd.)

  • Minghao Qu

    (LONGi Green Energy Technology Co., Ltd.)

  • Junxiong Lu

    (LONGi Green Energy Technology Co., Ltd.)

  • Liang Fang

    (LONGi Green Energy Technology Co., Ltd.)

  • Can Han

    (Sun Yat-sen University
    Delft University of Technology)

  • Paul Procel

    (Delft University of Technology)

  • Olindo Isabella

    (Delft University of Technology)

  • Pingqi Gao

    (Sun Yat-sen University)

  • Zhenguo Li

    (LONGi Green Energy Technology Co., Ltd.)

  • Xixiang Xu

    (LONGi Green Energy Technology Co., Ltd.)

Abstract

Silicon heterojunction (SHJ) solar cells have reached high power conversion efficiency owing to their effective passivating contact structures. Improvements in the optoelectronic properties of these contacts can enable higher device efficiency, thus further consolidating the commercial potential of SHJ technology. Here we increase the efficiency of back junction SHJ solar cells with improved back contacts consisting of p-type doped nanocrystalline silicon and a transparent conductive oxide with a low sheet resistance. The electrical properties of the hole-selective contact are analysed and compared with a p-type doped amorphous silicon contact. We demonstrate improvement in the charge carrier transport and a low contact resistivity (

Suggested Citation

  • Hao Lin & Miao Yang & Xiaoning Ru & Genshun Wang & Shi Yin & Fuguo Peng & Chengjian Hong & Minghao Qu & Junxiong Lu & Liang Fang & Can Han & Paul Procel & Olindo Isabella & Pingqi Gao & Zhenguo Li & X, 2023. "Silicon heterojunction solar cells with up to 26.81% efficiency achieved by electrically optimized nanocrystalline-silicon hole contact layers," Nature Energy, Nature, vol. 8(8), pages 789-799, August.
    • Handle: RePEc:nat:natene:v:8:y:2023:i:8:d:10.1038_s41560-023-01255-2
    DOI: 10.1038/s41560-023-01255-2
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    References listed on IDEAS

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    1. Wenzhu Liu & Jianhua Shi & Liping Zhang & Anjun Han & Shenglei Huang & Xiaodong Li & Jun Peng & Yuhao Yang & Yajun Gao & Jian Yu & Kai Jiang & Xinbo Yang & Zhenfei Li & Wenjie Zhao & Junlin Du & Xin S, 2022. "Light-induced activation of boron doping in hydrogenated amorphous silicon for over 25% efficiency silicon solar cells," Nature Energy, Nature, vol. 7(5), pages 427-437, May.
    2. Thomas G. Allen & James Bullock & Xinbo Yang & Ali Javey & Stefaan De Wolf, 2019. "Passivating contacts for crystalline silicon solar cells," Nature Energy, Nature, vol. 4(11), pages 914-928, November.
    3. Xianlin Qu & Yongcai He & Minghao Qu & Tianyu Ruan & Feihong Chu & Zilong Zheng & Yabin Ma & Yuanping Chen & Xiaoning Ru & Xixiang Xu & Hui Yan & Lihua Wang & Yongzhe Zhang & Xiaojing Hao & Ziv Hameir, 2021. "Identification of embedded nanotwins at c-Si/a-Si:H interface limiting the performance of high-efficiency silicon heterojunction solar cells," Nature Energy, Nature, vol. 6(2), pages 194-202, February.
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