Fan Xianping, Wang Jin, Qiao Xvsheng, Wang Minquan, Adam Jean-Luc, Zhang Xianghua
Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China.
J Phys Chem B. 2006 Mar 30;110(12):5950-4. doi: 10.1021/jp055780i.
The preparation process and upconversion luminescence of the Er(3+)-doped glass ceramics containing Ba(2)LaF(7) nanocrystals were investigated. The formation of Ba(2)LaF(7) nanocrystals in the glass ceramics was confirmed by X-ray diffraction. Er(3+)-doped glass ceramics containing Ba(2)LaF(7) nanocrystals exhibited highly efficient upconversion luminescence in comparison with glasses. With the increase of heat treatment temperature the upconversion luminescence intensity increased gradually. The composition of glasses was also found to have significant influence on the crystallization process of glass ceramics. The mixture of Ba(2)LaF(7) and La(2)O(3) nanocrystals and the mixture of La(2)F(3) and La(2)O(3) nanocrystals in the glass ceramics could be obtained by controlling different compositions of glasses. The upconversion luminescence intensity also varied significantly with different nanocrystals in the glass ceramics.
研究了含Ba₂LaF₇纳米晶的掺Er³⁺玻璃陶瓷的制备工艺及上转换发光特性。通过X射线衍射证实了玻璃陶瓷中Ba₂LaF₇纳米晶的形成。与玻璃相比，含Ba₂LaF₇纳米晶的掺Er³⁺玻璃陶瓷表现出高效的上转换发光。随着热处理温度的升高，上转换发光强度逐渐增强。还发现玻璃的组成对玻璃陶瓷的晶化过程有显著影响。通过控制玻璃的不同组成，可以在玻璃陶瓷中获得Ba₂LaF₇与La₂O₃纳米晶的混合物以及La₂F₃与La₂O₃纳米晶的混合物。玻璃陶瓷中不同的纳米晶对上转换发光强度也有显著影响。
