Used in the production of terbium-based luminescent materials for green phosphors in fluorescent lamps, LED lighting, and color television tubes. Serves as a precursor in the synthesis of terbium-doped optical glasses and ceramics used in solid-state lasers and fiber optics. Applied in research for developing advanced materials in electronics and telecommunications due to terbium’s strong magnetic and fluorescent properties. Also explored in bioimaging and medical diagnostics as a dopant in upconversion nanoparticles.