期刊
JOURNAL OF LUMINESCENCE
卷 263, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jlumin.2023.119971
关键词
Long afterglow; Optical data storage; Trap density; Optically stimulated luminescence
类别
This study reports a novel ortho-silicate phosphor, BaCaSiO4:Eu2+, with sustained luminescence and optically stimulated luminescence (OSL) properties. The long afterglow and OSL performance of BaCaSiO4:Eu2+ significantly improved with the co-doping of Pr3+, leading to a substantial increase in trap density. The optical storage capacity of the OSL material significantly increased due to numerous trapped and released electrons. The OSL-based ODS mechanism was revealed through a comprehensive study of electron trapping, storage, and release kinetics.
The need for data storage is growing in modern society, and optical data storage (ODS) is considered one of the most promising storage techniques. However, significant challenges must be overcome, including improving the performance of volatile memory and expanding its storage capacity. In this study, we report a novel ortho-silicate phosphor, BaCaSiO4, doped with Eu2+, which exhibits sustained luminescence and optically stimulated luminescence (OSL). Following the Pr3+ co-doping, the long afterglow and OSL performance of BaCaSiO4: Eu2+ significantly improved owing to the substantial increase in trap density. Owing to numerous trapped and released electrons, the optical storage capacity of the OSL material significantly increased. As a proof-of-concept, ODS flexible media were fabricated using the obtained OSL material, based on which reversible information write-in and read-out were implemented using ultraviolet irradiation and optical/thermal stimulation, respectively. Furthermore, the OSL-based ODS mechanism was revealed through a comprehensive study of electron trapping, storage, and release kinetics.
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