Tuyen V, Tong N, Le H, Dung C, Van T. Investigating the effect of synthesis parameters on the structure and upconversion luminescent properties of NaYF4:Tm,Yb for anticounterfeiting printing ink. Science and Technology Development Journal [Internet]. 31Mar.2024 [cited 22Nov.2024];27(1):3275-8. Available from: http://stdj.scienceandtechnology.com.vn/index.php/stdj/article/view/4223