| 凝胶-燃烧法合成YAG∶Eu3+纳米荧光材料的结构和发光性能 | |
| Structure and Luminescent Properties of Y3Al5O12∶Eu3+ Nano-phosphor by Gel Combustion Synthesis | |
| 摘要: | |
| 关键词: 溶胶-凝胶 燃烧 发光 YAG∶Eu | |
| 基金项目: | |
| Abstract: Y3Al5O12∶Eu nanophosphors were synthesized by a gel combustion method. The structure of phosphors was characterized by XRD and FTIR. YAG phase came to occur when YAG∶Eu precursors were sintered at 800 ℃, although the phase was mainly amorphous. The organic groups pyrolyzed completely and pure YAG phase was obtained in the samples sintered at 900 ℃. In the formation of YAG phase, no intermediate phases such as YAP and YAM were detected. Both 5D0 → 7F1 orange and 5D0 → 7F2 red emission could be observed for all the sintered samples. However, the emission of amorphous samples was greatly different from that of crystalline ones. The former was mainly 5D0→ 7F2 red emission, but the latter was 5D0 → 7F1 orange emission. As sintering temperature rises, the ratio of orange to red for phosphors increases. Eu could be doped up to 8% in YAG host lattice, and fluorescence quenching was absent. It indicated that the gel combustion synthesis method can increase emission intensity and quenching concentration due to a good distribution of Eu3+ activators in Y3Al5O12 matrix. | |
| Keywords: sol-gel combustion luminescence YAG∶Eu | |
| 投稿时间：2004-12-01 修订日期：2005-03-23 | |
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| 夏国栋,周圣明,张俊计,张涟翰,贾广强,徐军.凝胶-燃烧法合成YAG∶Eu3+纳米荧光材料的结构和发光性能[J].无机化学学报,2005,21(8):1203-1207. | |
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