Achieving Multimodal and Multicolor Luminescence in LaAlO₃:Pr³⁺, Gd³⁺ via Trap Engineering and Energy Transfer.

ABSTRACT: Achieving multimodal luminescence within a single phosphor is vital for multifunctional applications but remains challenging due to complex color tuning and trap engineering. In this study, we report Pr³⁺ and Gd³⁺ co-doped LaAlO₃ (LAO:PG) phosphors, designed through careful modulation of multilevel traps and Pr³⁺ → Gd³⁺ energy transfer dynamics. These materials exhibit diverse luminescence modes, including down-conversion luminescence (DCL), up-conversion luminescence (UCL), persistent luminescence (PersL), optically stimulated luminescence (OSL), and thermally stimulated luminescence (TSL) across a wide spectral range. Unlike previously studied Pr³⁺-doped LAO, the co-doped LAO:PG shows DCL in both UV-visible and NIR regions

SUBMITTER: Pathak N 

PROVIDER: S-EPMC12388170 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature