Controllable multicolored optical glass-ceramics based on nanostructure strategies and dopants

• Published in: Journal of luminescence 2025-01, Vol.277, p.120917, Article 120917
• Main Authors: Wang, Junyi, Huang, Feifei, Jiang, Guoqing, Lei, Ruoshan, Li, Denghao, Xu, Shiqing
• Format: Article
• Language: English
• Subjects: Glass ceramics; Nanocrystals; Optical materials; Tunable broadband
• ISSN: 0022-2313
• DOI: 10.1016/j.jlumin.2024.120917

Novel functional materials that integrate multiple tunable luminescence modes hold significant scientific and application potential. In this study, nanostructure strategies were employed to fabricate a series of microcrystalline glasses doped with rare-earth and transition-metal ions. The crystallization behavior of the nanocrystals (NCs) was revealed through high-resolution transmission electron microscopy (HRTEM), and the photoluminescence spectra of the samples were systematically investigated, demonstrating the achievement of independent and efficient visible light emission. With the further addition of the dopant Mn2+, it can occupy different sites to generate efficient energy transfer for ions, effectively improve the luminous efficiency, and changing the Mn2+ concentration can achieve a wide tunable color gamut. In addition, by exciting the glass samples with different excitation light sources, tunable emission of both red and blue was achieved. The results demonstrated the significant potential of the experimental samples as new multifunctional materials for optical dynamic anti-counterfeiting applications. •The glass-ceramic with γ-Ga2O3 and β-YF3 were successfully prepared by nanostructure strategies.•Mn2+ occupies different sites to generate efficient energy transfer for Eu2+ and Cr3+.•Tunable luminescence is realized through the regulation of Mn2+ concentration and excitation sources.•The tunable luminescence makes it an excellent candidate material for anti-counterfeiting.