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All-inorganic cesium lead iodide perovskite solar cells with stabilized efficiency beyond 15%

Author

Listed:
  • Kang Wang

    (Shaanxi Normal University)

  • Zhiwen Jin

    (Shaanxi Normal University
    Lanzhou University)

  • Lei Liang

    (Shaanxi Normal University)

  • Hui Bian

    (Shaanxi Normal University)

  • Dongliang Bai

    (Shaanxi Normal University)

  • Haoran Wang

    (Shaanxi Normal University)

  • Jingru Zhang

    (Shaanxi Normal University)

  • Qian Wang

    (Shaanxi Normal University
    Lanzhou University)

  • Shengzhong Liu

    (Shaanxi Normal University
    Chinese Academy of Sciences)

Abstract

As the black cesium lead iodide (CsPbI3) tends to transit into a yellow δ-phase at ambient, it is imperative to develop a stabilized black phase for photovoltaic applications. Herein, we report a distorted black CsPbI3 film by exploiting the synergistic effect of hydroiodic acid (HI) and phenylethylammonium iodide (PEAI) additives. It is found that the HI induces formation of hydrogen lead iodide (HPbI3+x), an intermediate to the distorted black phase with appropriate band gap of 1.69 eV; while PEAI provides nucleation for optimized crystallization. More importantly, it stabilizes the distorted black phase by hindering phase transition via its steric effects. Upon optimization, we have attained solar cell efficiency as high as 15.07%. Specifically, the bare cell without any encapsulation shows negligible efficiency loss after 300 h of light soaking. The device keeps 92% of its initial cell efficiency after being stored for 2 months under ambient conditions.

Suggested Citation

  • Kang Wang & Zhiwen Jin & Lei Liang & Hui Bian & Dongliang Bai & Haoran Wang & Jingru Zhang & Qian Wang & Shengzhong Liu, 2018. "All-inorganic cesium lead iodide perovskite solar cells with stabilized efficiency beyond 15%," Nature Communications, Nature, vol. 9(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-06915-6
    DOI: 10.1038/s41467-018-06915-6
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    Cited by:

    1. Shaochuan Hou & Siheng Wu & Xiaoyan Li & Jiahao Yan & Jie Xing & Hao Liu & Huiying Hao & Jingjing Dong & Haochong Huang, 2022. "Efficient CsPbBr 3 Perovskite Solar Cells with Storage Stability > 340 Days," Energies, MDPI, vol. 15(20), pages 1-9, October.
    2. Lee, Dong-Gun & Pandey, Padmini & Parida, Bhaskar & Ryu, Jun & Cho, SungWon & Kim, Jae-Kwang & Kang, Dong-Won, 2022. "Improving inorganic perovskite photovoltaic performance via organic cation addition for efficient solar energy utilization," Energy, Elsevier, vol. 257(C).
    3. Priyadarshini, P. & Senapati, S. & Naik, R., 2023. "Lead-free organic inorganic hybrid halide perovskites: An emerging candidate for bifunctional applications," Renewable and Sustainable Energy Reviews, Elsevier, vol. 186(C).

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