Achieving Luminescence of Sr₃Ga_1.98In_0.02Ge₄O₁₄:0.03Cr³⁺ via [In³⁺] Substitution [Ga³⁺] and Its Application to NIR pc-LED in Non-Destructive Testing.

ABSTRACT: Cr³⁺-doped Sr₃Ga₂Ge₄O₁₄:0.03Cr³⁺ (SGGO:0.03Cr³⁺) phosphor was synthesized via a high-temperature solid-phase method. Considering the tunable structure of SGGO, Ga³⁺ ions in the matrix were substituted with In³⁺ ions at a certain concentration. The tuned phosphor produced a red-shifted emission spectrum, with its luminescence intensity at 423 K maintained at 63% of that at room temperature; moreover, the internal quantum efficiency increased to 65.60%, and the external quantum efficiency correspondingly increased to 21.94%. On this basis, SGIGO:0.03Cr³⁺ was encapsulated into a pc-LED, which was applied in non-destructive testing (NDT) experiments, successfully realizing the r

SUBMITTER: Wang T 

PROVIDER: S-EPMC10745490 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature