Hydrothermal synthesis of Yb3+, Tm3+ co-doped Gd6MoO12 and its upconversion properties*
Di Qiu-Mei, Sun Yu-Mei, Xu Qi-Guang, Han Liu, Xue Bing, Sun Jia-Yue†
       
(a) The x-ray diffraction patterns of Gd6MoO12:Yb3+/Tm3+ samples obtained under different conditions: (i) pH = 3, (ii) pH = 9, (iii) pH = 3/EDTA; SEM images of Gd6MoO12:Yb3+/Tm3+ samples obtained at different conditions: (b) pH = 3, (c) pH = 9, and (d) pH = 3/EDTA.