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Ceramic-like stable CsPbBr3 nanocrystals encapsulated in silica derived from molecular sieve templates

Author

Listed:
  • Qinggang Zhang

    (Shanghai Jiao Tong University)

  • Bo Wang

    (Shanghai Jiao Tong University)

  • Weilin Zheng

    (Shanghai Jiao Tong University)

  • Long Kong

    (Shanghai Jiao Tong University)

  • Qun Wan

    (Shanghai Jiao Tong University)

  • Congyang Zhang

    (Shanghai Jiao Tong University)

  • Zhichun Li

    (Shanghai Jiao Tong University)

  • Xueyan Cao

    (Shanghai Jiao Tong University)

  • Mingming Liu

    (Shanghai Jiao Tong University)

  • Liang Li

    (Shanghai Jiao Tong University
    Shanghai Institute of Pollution Control and Ecological Security)

Abstract

Achieving good stability while maintaining excellent properties is one of the main challenges for enhancing the competitiveness of luminescent perovskite CsPbX3 (X=Cl, Br, I) nanocrystals (NCs). Here, we propose a facile strategy to synthesize ceramic-like stable and highly luminescent CsPbBr3 NCs by encapsulating them into silica derived from molecular sieve templates at high temperature (600–900 oC). The obtained CsPbBr3-SiO2 powders not only show high photoluminescence quantum yield (~71%), but also show an exceptional stability comparable to the ceramic Sr2SiO4:Eu2+ green phosphor. They can maintain 100% of their photoluminescence value under illumination on blue light-emitting diodes (LEDs) chips (20 mA, 2.7 V) for 1000 h, and can also survive in a harsh hydrochloric acid aqueous solution (1 M) for 50 days. We believe that the above robust stabilities will significantly enhance the potential of perovskite CsPbX3 NCs to be practically applied in LEDs and backlight displays.

Suggested Citation

  • Qinggang Zhang & Bo Wang & Weilin Zheng & Long Kong & Qun Wan & Congyang Zhang & Zhichun Li & Xueyan Cao & Mingming Liu & Liang Li, 2020. "Ceramic-like stable CsPbBr3 nanocrystals encapsulated in silica derived from molecular sieve templates," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-019-13881-0
    DOI: 10.1038/s41467-019-13881-0
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    Cited by:

    1. Pingping Zhang & Gaoling Yang & Fei Li & Jianbing Shi & Haizheng Zhong, 2022. "Direct in situ photolithography of perovskite quantum dots based on photocatalysis of lead bromide complexes," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    2. Yongsheng Sun & Yuzhen Wang & Weibin Chen & Qingquan Jiang & Dongdan Chen & Guoping Dong & Zhiguo Xia, 2024. "Rapid synthesis of phosphor-glass composites in seconds based on particle self-stabilization," Nature Communications, Nature, vol. 15(1), pages 1-8, December.

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