Used as a precursor in the synthesis of yttrium-based materials such as yttrium oxide for phosphors in LED and display technologies. Employed in sol-gel processes to produce ceramic coatings and nanomaterials due to its high solubility and reactivity. Serves as a dopant source in the preparation of luminescent and laser materials. Applied in catalyst development for organic reactions and in the fabrication of superconductors containing yttrium. Also utilized in research for solid oxide fuel cells and optical films.