Research on the quantum confinement effect and enhanced luminescence of red-emitting P5+-doped CaAl12O19:Mn4+,Mg2+ phosphors

Substituting P 5+ for Al 3+ leads to charge imbalance, which will induce the formation of an electron trap and oxygen vacancy and further generate a quantum-confined electron trap, thereby improving the luminescence intensity and PLQY of phosphors.