Used as a precursor in the synthesis of terbium-containing luminescent materials, particularly in the production of green phosphors for fluorescent lamps, LED lighting, and color displays. Plays a role in doping ceramic oxide materials for solid-state devices and optical coatings. Employed in research for developing luminescent sensors and bioimaging agents due to terbium’s strong green emission under UV excitation. Also utilized in catalyst preparation and in the study of lanthanide-based coordination compounds.