Clarifying concentration quenching mechanisms by lattice site-occupation and luminescence kinetics of Eu3+-activated Cs2Mg2Mo3O12

Cs 2 Mg 2 Mo 3 O 12 :Eu 3+ shows intense narrow red luminescence (FWHM of ∼1 nm). Concentration quenching is caused by multi-sites and energy transfer confirmed by Eu 3+ spectral probe.