Intense NIR emissions at 0.8 μm, 1.47 μm, and 1.53 μm from colloidal LiYbF4:Ln(3+) (Ln = Tm(3+) and Er(3+)) nanocrystals.

Intense NIR emissions at 0.8 μm, 1.47 μm, and 1.53 μm from colloidal LiYbF4:Ln(3+) (Ln = Tm(3+) and Er(3+)) nanocrystals.