A rapid construction strategy of NaYF4:Yb,Er@CDs nanocomposites for dual-mode anti-counterfeiting

Abstract

A rapid construction strategy is for the first time developed to achieve the composite structure of NaYF4:Yb,Er and carbon dots (CDs) through electrostatic interactions in only half a minute. The resulting NaYF4:Yb,Er@CDs nanocomposites have superior dual-mode luminescence properties, showing promising application prospects in the field of advanced optical anti-counterfeiting.