White Light Emission from Microwave Synthesized Spin Coated Gd2O3:Dy:Tb Nano Phosphors

Gd2O3:Dy3+(1.90%):Tb3+(0.1%) nanophosphors were synthesized using microwave irradiation and characterized using X-ray diffraction (XRD), transmission electron microscopy (TEM) and photoluminescence spectrophotometry. The results of XRD and TEM show that resultant nanoparticles are single phasic and have spherical shape. An efficient energy transfer was observed from host to the dopant ions. Characteristic blue and yellow emissions from Dy3+ ions and green emission from Tb3+ ions were observed. The CIE coordinates of the nanophosphor lie in the white light region of the chromaticity diagram. Spin coating of the nanophosphor was done on quartz substrate. Bright white luminescence of this film was observed under ultraviolet light.