Luminescent properties of Eu-activated nanophosphors Ca3Y0.8Gd0.2(VO4)2.4(PO4)0.6: Eu for light-emitting diodes |
| |
| Authors: | Jiaping Huang |
| |
| Affiliation: | Key Laboratory of Catalysis and Material Science of the State Ethnic Affairs Commission and Ministry of Education, College of Chemistry and Material Science, South-Central University for Nationalities, Wuhan 430074, Hubei, PR China |
| |
| 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 550 nm, 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 39 nm, which is in full agreement with the theoretical calculation data from the XRD patterns. |
| |
| Keywords: | Luminescence Phosphors Nanomaterials LEDs |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
