Enhanced photoluminescence of Eu2+–Pr3+ ions in Ga2S3 nanocrystals embedded chalcohalide glasses ceramics

• Published in: Journal of non-crystalline solids 2013-12, Vol.381, p.65-67
• Main Authors: Xu, Weina, Ren, Jing, Zhang, Zhihuan, Chen, Guorong, Kong, Deshuang, Gu, Changjun, Chen, Chunming, Kong, Linren
• Format: Article
• Language: English
• Subjects: Chalcohalide glasses; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Controlled crystallization; Cross-disciplinary physics: materials science; rheology; Crystallites; Crystallization; Diffraction; Eu2 +–Pr3 + co-doped; Exact sciences and technology; Glass ceramics; Growth from solid phases (including multiphase diffusion and recrystallization); Luminescence; Materials science; Methods of crystal growth; physics of crystal growth; Nano-crystals; Nanocrystalline materials; Nanoscale materials and structures: fabrication and characterization; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Other topics in nanoscale materials and structures; Photoluminescence; Physics; Scanning electron microscopy; X-ray diffraction
• ISSN: 0022-3093; 1873-4812
• DOI: 10.1016/j.jnoncrysol.2013.07.022

A new down-conversion chalcohalide glass ceramics with a composition of 37.5GeS2–22.5Ga2S3–40CsCl (in mol %) doped with 0.15 Eu2+ and 0.1 Pr3+ (in mol %) is prepared. The crystallization is characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). Ga2S3 crystallites in the nano-scale (20-80nm) are obtained by the controlled crystallization. Visible photoluminescence properties of the glass and transparent glass ceramics are investigated. The mechanism responsible for the enhanced luminescence of both Eu2+ and Pr3+ in the glass ceramics was discussed from the point of view of the reduced phonon energy effect. •Transparent Eu2+–Pr3+ co-doped chalcohalide glass ceramics are prepared.•Ga2S3 nano-crystals are obtained by the controlled crystallization.•Greatly enhanced Eu2+ and Pr3+ emissions are realized by the crystallization.