Chinese Journal of Applied Chemistry ›› 2024, Vol. 41 ›› Issue (3): 328-339.DOI: 10.19894/j.issn.1000-0518.230288

• Rare Earth • Previous Articles    

Progress on Cr3+-Doped Broadband Near-Infrared Phosphors

Zi-Wei LU1,2, Yong-Fu LIU1(), Zhao-Hua LUO1, Peng SUN1, Jun JIANG1()   

  1. 1.Ningbo Institute of Materials Technology & Engineering,Chinese Academy of Sciences,Ningbo 315201,China
    2.School of Materials Science and Chemical Engineering,Ningbo University,Ningbo 315211,China
  • Received:2023-09-22 Accepted:2023-12-11 Published:2024-03-01 Online:2024-04-09
  • Contact: Yong-Fu LIU,Jun JIANG
  • Supported by:
    the National Natural Science Foundation of China(12074393);the Zhejiang Provincial Natural Science Foundation of China(LZ23A040001);the Youth Innovation Promotion Association Chinese Academy of Sciences(2021295)

Abstract:

Near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) are expected to be the next-generation NIR light sources, with the advantages of small size, broad bandwidth, and easy tuning of emission peaks. The key for NIR pc-LEDs is to develop highly efficient broadband NIR phosphors that can be effectively excited by blue light. Cr3+-activated NIR phosphors have been widely studied, and this paper reviews the development of Cr3+-doped NIR phosphors peaked at 800~900 nm. Based on phosphates, pyroxenes, and other systems, the relationships between the structure and the emission peak and bandwidth are summarized. Furthermore, to enhance the NIR performance, strategies of synthesis technology optimization, components design, and co-doping sensitizers are discussed in detail.

Key words: Near-infrared phosphors, 800~900 nm, Cr3+, Yb3+, Phosphates, Borates, Pyroxenes

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