Jung Eun Choi, Donghwan Kim and Ho Seong Jang
Chem. Commun., 2019,55, 2261-2264
DOI:
10.1039/C8CC09031A,
Communication
Bright and single band red-emitting NaErF4:Tm,Gd-based upconversion nanophosphors (UCNPs) were successfully synthesized by the formation of a core/intermediate shell/active shell structure. The NaErF4:Tm,Gd/NaYF4:Ca,Yb/NaYF4:Nd,Yb core/shell/shell UCNPs exhibit intense red light under both 980 and 800 nm near infrared light excitations.