UV­B Persistent Luminescence of CaF2:Gd3+ for Radiation Labeling and Tracing (Advanced Optical Materials 31/2024)

Abstract

Ultraviolet-B Persistent Luminescence of CaF₂:Gd³⁺

After exposure to X-ray, CaF₂:Gd³⁺ continued to emit ultraviolet-B luminescence peaking at 313 nm, corresponding to the ⁶P_7/2 → ⁸S_7/2 transition of Gd³⁺. By X-ray photoelectron spectroscopy measurements, the valence variation model was excluded to explain the persistent luminescence of CaF₂:Gd³⁺. Potential applications including static labeling and dynamic tracking were demonstrated depending on such ultraviolet-B persistent luminescence. For further details, see article number 2401320 by Leipeng Li, Jianrong Qiu, Yanmin Yang, and co-workers from Hebei University and Zhejiang University.