Microwave Hydrothermal Synthesis of Hexagonal NaYF4 and Yb3+,Er3+-doped NaYF4 Microtubes
ZHANG Ling,ZHU Ying-Jie
Journal of Inorganic Materials . 2009, (3): 553 -558 .  DOI: 10.3724/sp.j.1077.2009.00553