Enhanced luminescence of Y3Al5O12:Ce3+ nanophosphor for white light-emitting diodes

Abstract

Results pertaining to the development of highly dispersible stand-alone particles of Ce3+-doped Y3Al5O12 nanophosphor and their luminescence are presented. The yellow light-emitting nanophosphor was produced as a result of a single-step auto-combustion process, which requires no auxiliary annealing treatments prior to any practical application. The structure, photoluminescence, and chromaticity of the powder nanophosphor samples with the compositions Y(3−x)Al5O12:xCe3+ (x=0.01–1) are featured in the letter. The nanophosphor absorbs light efficiently in the visible region of 400–500nm, and shows single broadband emission peaking at ∼560nm. The luminescence yield is almost analogous to the samples made from other conventional methods. Hence, it could be an apt candidate for generating white light when coupled to a blue light-emitting diode (λem=450nm).