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Efficient and stable emission of warm-white light from lead-free halide double perovskites

Author

Listed:
  • Jiajun Luo

    (Huazhong University of Science and Technology (HUST))

  • Xiaoming Wang

    (The University of Toledo)

  • Shunran Li

    (Huazhong University of Science and Technology (HUST))

  • Jing Liu

    (Huazhong University of Science and Technology (HUST))

  • Yueming Guo

    (Monash University)

  • Guangda Niu

    (Huazhong University of Science and Technology (HUST))

  • Li Yao

    (Huazhong University of Science and Technology (HUST))

  • Yuhao Fu

    (Jilin University)

  • Liang Gao

    (Huazhong University of Science and Technology (HUST)
    University of Toronto)

  • Qingshun Dong

    (Tsinghua University)

  • Chunyi Zhao

    (Dalian Institute of Chemical Physics, Chinese Academy of Sciences)

  • Meiying Leng

    (Huazhong University of Science and Technology (HUST))

  • Fusheng Ma

    (Tsinghua University)

  • Wenxi Liang

    (Huazhong University of Science and Technology (HUST))

  • Liduo Wang

    (Tsinghua University)

  • Shengye Jin

    (Dalian Institute of Chemical Physics, Chinese Academy of Sciences)

  • Junbo Han

    (Huazhong University of Science and Technology (HUST))

  • Lijun Zhang

    (Jilin University)

  • Joanne Etheridge

    (Monash University
    Monash University)

  • Jianbo Wang

    (and Institute for Advanced Studies, Wuhan University)

  • Yanfa Yan

    (The University of Toledo)

  • Edward H. Sargent

    (University of Toronto)

  • Jiang Tang

    (Huazhong University of Science and Technology (HUST))

Abstract

Lighting accounts for one-fifth of global electricity consumption1. Single materials with efficient and stable white-light emission are ideal for lighting applications, but photon emission covering the entire visible spectrum is difficult to achieve using a single material. Metal halide perovskites have outstanding emission properties2,3; however, the best-performing materials of this type contain lead and have unsatisfactory stability. Here we report a lead-free double perovskite that exhibits efficient and stable white-light emission via self-trapped excitons that originate from the Jahn–Teller distortion of the AgCl6 octahedron in the excited state. By alloying sodium cations into Cs2AgInCl6, we break the dark transition (the inversion-symmetry-induced parity-forbidden transition) by manipulating the parity of the wavefunction of the self-trapped exciton and reduce the electronic dimensionality of the semiconductor4. This leads to an increase in photoluminescence efficiency by three orders of magnitude compared to pure Cs2AgInCl6. The optimally alloyed Cs2(Ag0.60Na0.40)InCl6 with 0.04 per cent bismuth doping emits warm-white light with 86 ± 5 per cent quantum efficiency and works for over 1,000 hours. We anticipate that these results will stimulate research on single-emitter-based white-light-emitting phosphors and diodes for next-generation lighting and display technologies.

Suggested Citation

  • Jiajun Luo & Xiaoming Wang & Shunran Li & Jing Liu & Yueming Guo & Guangda Niu & Li Yao & Yuhao Fu & Liang Gao & Qingshun Dong & Chunyi Zhao & Meiying Leng & Fusheng Ma & Wenxi Liang & Liduo Wang & Sh, 2018. "Efficient and stable emission of warm-white light from lead-free halide double perovskites," Nature, Nature, vol. 563(7732), pages 541-545, November.
    • Handle: RePEc:nat:nature:v:563:y:2018:i:7732:d:10.1038_s41586-018-0691-0
    DOI: 10.1038/s41586-018-0691-0
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    Citations

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    Cited by:

    1. Rui Zhou & Laizhi Sui & Xinbao Liu & Kaikai Liu & Dengyang Guo & Wenbo Zhao & Shiyu Song & Chaofan Lv & Shu Chen & Tianci Jiang & Zhe Cheng & Sheng Meng & Chongxin Shan, 2023. "Multiphoton excited singlet/triplet mixed self-trapped exciton emission," Nature Communications, Nature, vol. 14(1), pages 1-13, December.
    2. Robert A. Jagt & Ivona Bravić & Lissa Eyre & Krzysztof Gałkowski & Joanna Borowiec & Kavya Reddy Dudipala & Michał Baranowski & Mateusz Dyksik & Tim W. J. Goor & Theo Kreouzis & Ming Xiao & Adrian Bev, 2023. "Layered BiOI single crystals capable of detecting low dose rates of X-rays," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    3. Maurizia Palummo & Daniele Varsano & Eduardo Berríos & Koichi Yamashita & Giacomo Giorgi, 2020. "Halide Pb-Free Double–Perovskites: Ternary vs. Quaternary Stoichiometry," Energies, MDPI, vol. 13(14), pages 1-28, July.
    4. Yunhu Wang & Kunpeng Wang & Fangxu Dai & Kai Zhang & Haifeng Tang & Lei Wang & Jun Xing, 2022. "A warm-white light-emitting diode based on single-component emitter aromatic carbon nitride," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    5. Yang Bryan Cao & Daquan Zhang & Qianpeng Zhang & Xiao Qiu & Yu Zhou & Swapnadeep Poddar & Yu Fu & Yudong Zhu & Jin-Feng Liao & Lei Shu & Beitao Ren & Yucheng Ding & Bing Han & Zhubing He & Dai-Bin Kua, 2023. "High-efficiency, flexible and large-area red/green/blue all-inorganic metal halide perovskite quantum wires-based light-emitting diodes," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

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