Influence of silver nanoparticles on the luminescence dynamics of Dy3+ doped amorphous matrix

•Ag:Dy3+ co-doped silicate glass system is prepared.•Addition of Ag nanoparticles quenches the luminescence intensity of Dy3+ ions.•The lifetime of the 4F9/2 excited state is increased with heat treatment duration.•The term is discussed as the deactivation of Dy3+ ions.

In this work, we report on the deactivation of Dy3+ ions by increase in concentration of silver nanoparticles (NPs) in a silicate glassy system. The quench in luminescence of Dy3+ ions is consistent with increase in the long and short lifetime of 4F9/2 excited state which develops as the concentration of silver NPs increases by heat-treatment duration.

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