Tunable emission color of Li2SrSiO4:Tb3+ due to cross‐relaxation process and optical thermometry investigation

• Published in: Journal of the American Ceramic Society Vol. 101; no. 7; pp. 3076 - 3085
• Main Authors: Zhou, Xiao, Jiang, Sha, Xiang, Guotao, Tang, Xiao, Luo, Xiaobing, Li, Li, Zhou, Xianju
• Format: Journal Article
• Language: English
• Published: Columbus Wiley Subscription Services, Inc 01.07.2018
• Subjects: concentration quenching; cross relaxation; Crystal lattices; Emission analysis; Emission spectra; Fluorescence; Optical properties; optical thermometry; Phosphors; silicate phosphor; Temperature dependence; Terbium; Thermometry; tunable emission

A series of Li2SrSiO4:xTb3+ (0.2%, 0.4%, 0.6%, 0.8%, 2%, 4%, and 6%) phosphors were prepared by conventional solid‐state reaction. It was found that this silicate phosphor has a wide excitation band at near‐ultraviolet region (230‐300 nm) due to spin‐allowed 4f 8→4f75d1 transitions of Tb3+ ions, wit...