Novel Eu³⁺-activated Ba₂Y₅B₅O₁₇ red-emitting phosphors for white LEDs: high color purity, high quantum efficiency and excellent thermal stability.

ABSTRACT: Eu³⁺-activated Ba₂Y₅B₅O₁₇ (Ba₂Y_5-x Eu _x B₅O₁₇; x = 0.1-1) red-emitting phosphors were synthesized by the conventional high temperature solid-state reaction method in an air atmosphere. Powder X-ray diffraction (XRD) analysis confirmed the pure phase formation of the as-synthesized phosphors. Morphological studies were performed using field emission-scanning electron microscopy (FE-SEM). The photoluminescence spectra, lifetimes, color coordinates and internal quantum efficiency (IQE) as well as the temperature-dependent emission spectra were investigated systematically. Upon 396 nm excitation, Ba₂Y_5-x Eu _x B_5</

SUBMITTER: Annadurai G 

PROVIDER: S-EPMC9081613 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature