 |
User Center |
|
| Journal of Rare Earths |
| Administrated by CAST |
| Sponsored by CSRE and GRINM |
| Published by Elsevier B.V. |
| Editor-in-Chief: XU Guang xian |
 |
| Journal of Rare Earths |
| (monthly, Since 1990) |
| ISSN 1002-0721 CODEN: JREAE6 |
 |
| Journal of the Chinese Society of Rare Earths |
| (Bimonthly, Since 1983) |
| ISSN 1000-4343 CODEN: ZXXUE5 |
|
|
 |
Journal of Rare Earths Issue |
| Journal of Rare Earths |
2012 Year Vol.30 NO.3 |
Page: 202-204 |
|
| Molten salt synthesis and luminescent properties of YVO4:Eu nanocrystalline phosphors |
|
| WANG Fang (王 芳)1, LIU Chenglu (刘成露)1, ZHOU Zhiqiang (周志强)1, JIA Peiyun (贾佩云)1, LIN Jun (林 君)2 |
| (1. School of Sciences, Northeast Forestry University, Harbin 150040, China; 2. State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China) |
|
| Abstract: |
YVO4:Eu nanocrystalline phosphors were successfully prepared at 400 ºC in equal moles of NaNO3 and KNO3 molten salts. NaOH concentration and annealing temperature played important roles in phase purity and crystallinity of the nanocrystallines, and the optimum NaOH concentration and annealing temperature were 6:40 and 400 ºC, respectively. The nanocrystallines were well crystallized with a cubic morphology in an average grain size of 18 nm. Upon excitation of the vanadate groups at 314 nm, YVO4:Eu nanocrystallines exhibited the characteristic emission of Eu3+, which indicated that there was an energy transfer from vanadate groups to Eu3+. Moreover, the influence of superficial effect, especially the dangling bonds on the structure and luminescent properties of the nanocrystallines was discussed in detail. |
| Key word:nanocrystalline; phosphor; luminescence; molten salt; YVO4; rare earths |
|
|
