Harnessing solid-state ion exchange for the environmentally benign synthesis of high-efficiency Mn4+-doped phosphors

Abstract

In this study, a solid-state ion exchange (SSIE) method is proposed to synthesize a series of Mn⁴⁺-doped fluoride phosphors, which avoids the use of HF solution during the Mn⁴⁺-doping process. The obtained Mn⁴⁺-doped fluoride phosphors exhibit strong red emission with a quantum yield of 46%.