J. Mater. Sci. Technol. ›› 2023, Vol. 166: 1-20.DOI: 10.1016/j.jmst.2023.04.038

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Recent progress on garnet phosphor ceramics for high power solid-state lighting

Congcong Yanga,1, Xiyue Zhanga,1, Jian Kanga,b,cong Weia,b, Pengfei Sanga,b, Shenghui Lina,b,bingheng Sunc, Jintai Fanc,benxue Jiangc,*, Yang Lid, Xinrong Chene, Jian Xue,f,*, Hao Chena,b,g, Le Zhanga,b,*   

  1. aJiangsu Key Laboratory of Advanced Laser Materials and Devices, School of Physics and Electronics Engineering, Jiangsu Normal University, Xuzhou 221116, China;
    bJiangsu Xiyi Advanced Materials Research Institute of Industrial Technology, Xuzhou 221400, China;
    cShanghai Institute of Optics Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China;
    dSchool of Material Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
    eSchool of Physics and Electronic Information, Henan Polytechnic University, Jiaozuo 454000, China;
    fXuzhou Fuchang Electronic Technology Co., Ltd., Xuzhou 221116, China g Xuzhou Kangna Advanced Materials Technology Co. Ltd., Xuzhou 221400, China
  • Received:2023-01-17 Revised:2023-04-19 Accepted:2023-04-19 Published:2023-12-10 Online:2023-12-06
  • Contact: *E-mail addresses: jiangbx@siom.ac.cn (B. Jiang), xujian@hpu.edu.cn (J. Xu), zhangle@jsnu.edu.cn (L. Zhang).
  • About author:1 These authors contributed equally to this work.

Abstract: As the fourth-generation light source, solid-state lighting has developed rapidly in the past 30 years due to its advantages of high efficiency and environmental protection. It is widely used in various scenes such as automobile headlights, projection displays, industrial production, and remote lighting. High-power, high-brightness white light-emitting diodes (LEDs) and laser diodes (LDs) technology put forward new requirements for the service stability of color conversion materials. Garnet phosphor ceramics have emerged with their unique advantages of withstanding high power excitation density and the flexibly tunable spectrum. In this article, the research progress of garnet based phosphor ceramics for high-power solid-state lighting was comprehensively reviewed. Firstly, the band gap and coordination environment regulations of luminescence centers of garnet phosphor were summarized. Secondly, the improvement of luminous efficacy via defects regulation was discussed. Thirdly, the relationship between the geometric design and the lighting performance was elucidated. Fourthly, the characterization methods of phosphor ceramics for laser lighting were introduced and illustrated. Finally, the development trend of garnet phos-phor ceramics in solid state lighting and display was prospected.

Key words: Garnet phosphor ceramics, High power excitation density, Crystal field regulation, Micro-scale defects Geometric structural design, Luminescence evaluation standard