An isolated deep-trap phosphor for optical data storage
Source abstract
Abstract
Abstract Next generation optical storage based on photostimulated luminescence (PSL) materials is a significant data storage technology for the information age. For a better signal durability and resolution, it is necessary to develop PSL phosphors with deep traps in a narrow distribution. Accordingly, in this short letter, we report a unique Y2GeO5:Pr3+ PSL phosphor with a narrow trap distribution (0.3 eV) and a trap depth of 1.31 eV, which is presently the deepest value. After charging by ultraviolet (254 nm) irradiation (data writing), the PSL of Pr3+ can be stimulated by an 808 nm (1.53 eV) laser (data reading). This finding reveals that electrons stored in the deep traps are sufficiently stable under a thermal disturbance at room temperature and even under stimulation by a 980 nm (1.26 eV) laser. Additionally, the deep traps are isolated and demonstrate little interference with the shallow traps. Therefore, the deep-trap Y2GeO5:Pr3+ phosphor shows potential applications in optical data storage.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Perovskite Materials and Applications · Radiation Detection and Scintillator Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (18)
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