Synthesis of red-emitting nanocrystalline phosphor CaAlSiN3:Eu2+ derived from elementary constituents

Abstract

A highly efficient red-emitting nitride phosphor of CaAlSiN₃:Eu²⁺ is prepared via one-pot ammonothermal synthetic route starting from elementary constituents of Ca, Al, Si, and Eu. Respective elements are able to be dissolved in the supercritical solution of ammonia, transformed into intermediates of metal amides, and consecutively converted to metal nitride of nanocrystalline CaAlSiN₃:Eu²⁺.