Up-conversion quantum yields of SrF₂:Yb³⁺,Er³⁺ sub-micron particles prepared by precipitation from aqueous solution

Abstract

Herein, we report near-infrared-to-visible up-conversion (UC) in SrF₂:Yb³⁺,Er³⁺ sub-micron crystals prepared <italic>via</italic> a facile route in an aqueous solution.