Unraveling the distinct luminescence thermal quenching behaviours of A/B-site Eu3+ ions in double perovskite Sr2CaMoO6:Eu3+

The emission of B-site Eu3+ is more easily quenched than that of A-site Eu3+ in Sr2CaMoO6:Eu3+ phosphors. A distortion of B-site octahedron with elevating temperature and strong coupling with phonons may be partially responsible for it.261