| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1610656 | Journal of Alloys and Compounds | 2014 | 6 Pages |
Abstract
A strong red-emitting Eu2+ activated CaAlSiN3 phosphor was successfully prepared by a pressureless low temperature solid-state reaction method with the aid of fluxes, namely BaF2, CaF2, NH4F, and H3BO3. The experimental results showed that the addition of BaF2 flux effectively reduced the temperature of formation of CaAlSiN3:Eu2+ by about 100Â K and suppressed the volatilization of the raw materials, suggesting that BaF2 flux modifies the mechanism of formation of CaAlSiN3:Eu2+. The powder of the CaAlSiN3:Eu2+ phosphor produced with 6Â wt% BaF2 flux had an enhanced emission intensity, which was a result of the high crystallinity, the absence of secondary phases, the narrow particle-size distribution, and the clean surfaces of the particles in the final product.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Wei-Wei Hu, Chao Cai, Qiang-Qiang Zhu, Xin Xu, Lu-Yuan Hao, Simeon Agathopoulos,