Abstract
Eu3+-doped Ca3Y0.8Gd0.2(VO4)2.4(PO4)0.6 nanophosphors have been prepared by modified solid-state reaction. X-ray powder diffraction, transmission electron microscopy (TEM), photoluminescence excitation and emission spectra were used to characterize the resulting samples. X-ray powder diffraction (XRD) analysis confirmed the formation of YVO4. Photoluminescence (PL) results showed that the phosphor could be efficiently excited by UV–visible light from 350 to 550nm, exhibiting bright orange-red emission(excited by 397) and red emission(excited by 467), which has potential application as a phosphor for UV and blue GaN-based light-emitting diodes (LEDs). TEM images show that the grain size of Ca3Y0.45Eu0.35Gd0.2(VO4)2.4(PO4)0.6 is about 39nm, which is in full agreement with the theoretical calculation data from the XRD patterns.
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