![Facile Synthesis and Controllable Emission of Tm
<sup>3+</sup>
/Er
<sup>3+</sup>
-Doped and -Co-doped α-NaYbF
<sub/>4</sub>
Upconversion Nanocrystals]()
Facile Synthesis and Controllable Emission of Tm
<sup>3+</sup>
/Er
<sup>3+</sup>
-Doped and -Co-doped α-NaYbF
<sub/>4</sub>
Upconversion NanocrystalsHe, Huilin; Zhang, Ying; Li, Yong; Wang, Lihong; Gao, Xian; Zhang, Xi; He, Danqiong; Chen, Rui; Luo, Dan; Sun, Xiao Wei; Liu, Yan Jun · ACS Omega · 2018