Preparation and characterization of rod-like Eu:Gd2O3 phosphor through a hydrothermal routine

Rod-like Gd(OH)3 precursor was successfully synthesized through a hydrothermal routine. Eu:Gd2O3 red phosphor was obtained by a subsequent calcination of the precursor at 600 °C for 4 h. The dehydration of Gd(OH)3 precursor took two steps and an intermediate phase, monoclinic GdOOH, was produced. The rod-like phosphor will emit a strong visible light peaking at 610 nm upon 258 nm UV illumination, implying its potential application in the field of luminescent devices.