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

Abstract

Results pertaining to the development of highly dispersible stand-alone particles of ${\mathrm{Ce}}^{3+}$ -doped ${\mathrm{Y}}_3{\mathrm{Al}}_5{\mathrm{O}}_{12}$ 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 ${\mathrm{Y}}_{(3-x)}{\mathrm{Al}}_5{\mathrm{O}}_{12}:x{\mathrm{Ce}}^{3+}$ $(x=0.01–1)$ are featured in the letter. The nanophosphor absorbs light efficiently in the visible region of $400–500\mathrm{nm}$ , and shows single broadband emission peaking at $\sim 560\mathrm{nm}$ . 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 $({\lambda }_{\mathrm{em}}=450\mathrm{nm})$ .