|
|||||
|
|
Crystal structure and photoluminescence of (Y1−xCex)2Si3O3N4 |
|
| Authors: | F.C. Lu M.W. Wang |
| Affiliation: | a School of Materials Science & Engineering and State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, PR China b Key Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, PR China c Department of Chemistry, School of Science and Applied Science, University of Science and Technology Beijing, Beijing 100083, PR China |
| Abstract: | Oxonitridosilicate phosphors with compositions of (Y1−xCex)2Si3O3N4 (x=0−0.2) have been synthesized by solid state reaction method. The structures and photoluminescence properties have been investigated. Ce3+ ions have substituted for Y3+ ions in the lattice. The emission and excitation spectra of these phosphors show the characteristic photoluminescence spectra of Ce3+ ions. Based on the analyses of the diffuse reflection spectra and the PL spectra, a systematic energy diagram of Ce3+ ion in the forbidden band of sample with x=0.02 is given. The best doping Ce content in these phosphors is ∼2 mol%. The quenching temperature is ∼405 K for the 2 mol% Ce content sample. The luminescence decay properties were investigated. The primary studies indicate that these phosphors are potential candidates for application in three-phosphor-converted white LEDs. |
| Keywords: | Y2Si3O3N4 Crystal structure Ce3+ doped Photoluminescence |
| 本文献已被 ScienceDirect 等数据库收录！ | |