Up-conversion luminescence polarization control in Er3+-doped NaYF4 nanocrystals
Zhang Hui1, Yao Yun-Hua2, Zhang Shi-An2, †, , Lu Chen-Hui3, Sun Zhen-Rong2
       

The TEM (a) and HRTEM (b) images of the glass ceramic containing Er3+:NaYF4 nanocrystals.