Achieving highly efficient far-red emission from luminescence-ignorable Ca2MgTeO6:Mn4+ to Ca2-Ln MgTe1-W O6:Mn4+ (Ln = La, Y, Gd) phosphors via solid solution and impurity doping strategies

Insights into luminescence thermal quenching of Mn4+-doped BaLa(Na/Li)(W/Te)O6 double perovskite red phosphors

“…15 Later, both solid solution and impurity doping were shown to be an effective route to improve luminescence thermal stability of Mn 4+ doped phosphors; however, there was little discussion on the mechanism involved. 16,17 Choosing a host material for phosphor applications should be based on the presence of stable physical and chemical properties, wear resistance, corrosion resistance, and strong characteristic absorption in the ultraviolet region. Among the most promising host materials meeting these criteria are tungstate double perovskites with the general formula of AA 0 BB 0 O 6 .…”