Dual-functional application of Ca₂Ta₂O₇:Bi³⁺/Eu³⁺ phosphors in multicolor tunable optical thermometry and WLED.

ABSTRACT: A series of Bi³⁺/Eu³⁺ co-doped Ca₂Ta₂O₇ (CTO:Bi³⁺/Eu³⁺) phosphors were prepared by high-temperature solid-state method for dual-emission center optical thermometers and white light-emitting diode (WLED) device. By modulating the doping ratio of Bi³⁺/Eu³⁺ and utilizing the energy transfer from Bi³⁺ to Eu³⁺, the tunable color emission ranging from green to reddish-orange was realized. The designed CTO:0.04Bi³⁺/Eu³⁺ optical thermometers exhibit significant thermochromism, superior stability, and repeatability, with maximum sensitivities of S_a = 0.055 K^-1 (at 510 K) and S_r = 1.298% K^-1 (at 480 K) within the te

SUBMITTER: Ru J 

PROVIDER: S-EPMC11374947 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature