Journal of Inorganic Materials ›› 2025, Vol. 40 ›› Issue (9): 1037-1044.DOI: 10.15541/jim20240497

• RESEARCH LETTER • Previous Articles    

Influence of Cr3+ Doping Concentration on the Persistent Performance of YAGG:Ce3+,Cr3+ Luminescent Ceramics

LI Tingsong1,2(), WANG Wenli1,3, LIU Qiang3, WANG Yanbin1,2, ZHOU Zhenzhen1,2, HU Chen1,2, LI Jiang1,2()   

  1. 1. Transparent Ceramics Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
    2. Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
    3. School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, China
  • Received:2024-11-28 Revised:2024-12-25 Published:2025-09-20 Online:2025-01-24
  • Contact: LI Jiang, professor. E-mail:lijiang@mail.sic.ac.cn
  • About author:LI Tingsong (1998-), male, Master candidate. E-mail: litingsong@mail.sic.ac.cn
  • Supported by:
    National Key R&D Program of China(2023YFB3506600)

Abstract:

Y3Al2Ga3O12:Ce3+,Cr3+ (YAGG:Ce3+,Cr3+), as a persistent luminescent material, has advantages of high initial luminescence intensity and long persistent time, which is promising in persistent luminescent material applications. At present, YAGG:Ce3+,Cr3+ powders exhibit good persistent performance, but their persistent performance of ceramics still needs to be further improved to meet the new requirements. In this work, (Y0.998Ce0.002)3(Al1-xCrx)2Ga3O12 ceramics with different Cr3+ doping concentrations were prepared by solid-state reaction, including air pre-sintering, hot isostatic pressing (HIP) post-treatment and air annealing, to investigate the effects of Cr3+ doping concentration on the microstructure, optical properties and persistent performance of the ceramics. The results showed that as the doping concentration of Cr3+ increased from 0.025% to 0.2% (in atom), no significant effect of Cr3+ concentration on the morphology of pre-sintered ceramics or HIP post-treatment ceramics was observed, but the in-line transmittance gradually increased while the persistent performance gradually decreased. Among them, YAGG:Ce3+,Cr3+ ceramics doped with 0.025% Cr3+ showed the strongest initial luminescence intensity exceeding 6055 mcd/m2 and a persistent time of 1030 min after air pre-sintering combined with HIP post-treatment and air annealing. By optimizing the Cr3+ doping concentration and the fabrication process, the persistent luminescence (PersL) performance of the YAGG:Ce3+,Cr3+ ceramics was obviously improved.

Key words: YAGG:Ce3+,Cr3+ ceramic, Cr3+ doping concentration, persistent luminescence, hot isostatic pressing, air annealing

CLC Number: