A novel red-emitting phosphor K2MgGeO4:Eu3+ for WLEDs: zero-thermal quenching induced by heterovalent substitution

The heterovalent substitution of Eu 3+ ions for K + sites introduces quantitative V K and O i in the host lattice, which yields high IQE, induces zero-TQ, and promotes the fabrication of WLED with high R a .