Used as a dopant in phosphors for fluorescent lamps, LED lighting, and display screens, where it provides sharp red emission, enhancing color rendering. Employed in solid-state lasers for specialized optical applications due to its luminescent properties. Serves as a component in scintillation materials for radiation detectors, particularly in medical imaging and nuclear monitoring. Applied in research for developing luminescent labels and sensors in bioanalytical chemistry. Also investigated for use in quantum memory and optical data storage technologies owing to its long-lived excited states.