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Highly efficient phosphor-glass composites by pressureless sintering

Author

Listed:
  • Dao Zhang

    (Zhejiang University)

  • Wenge Xiao

    (Zhejiang University)

  • Chang Liu

    (Zhejiang University)

  • Xiaofeng Liu

    (Zhejiang University)

  • Jinjun Ren

    (Chinese Academy of Sciences)

  • Beibei Xu

    (Zhejiang University)

  • Jianrong Qiu

    (Zhejiang University
    Chinese Academy of Sciences)

Abstract

The development of high-power white light-emitting diodes demands highly efficient and stable all-inorganic color converters. In this respect, phosphor-glass/ceramic composites show great promise as they could combine the merits of high quantum efficiency of phosphors and high chemical and thermal stabilities of glass/ceramic matrices. However, strong interfacial reaction between phosphors and matrices at high temperature results in quantum efficiency loss of the embedded phosphors, and traditional solutions rely on high-pressure consolidation techniques. Here we report the intrinsic inhibition of interfacial reaction by using silica glass rather than multicomponent glasses as the matrix. The embedment of phosphors is achieved via a pressureless sintering method, rendering these color-tunable phosphor-glass composites not only accessible to three-dimensional printing technique, but also highly efficient (internal quantum efficiency >90.0%), thermally stable at 1200 °C and hydrothermally stable at 200 °C. Our results provide a facile and general strategy for developing all-inorganic functional composites.

Suggested Citation

  • Dao Zhang & Wenge Xiao & Chang Liu & Xiaofeng Liu & Jinjun Ren & Beibei Xu & Jianrong Qiu, 2020. "Highly efficient phosphor-glass composites by pressureless sintering," Nature Communications, Nature, vol. 11(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-16649-z
    DOI: 10.1038/s41467-020-16649-z
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