LiSrY₂(BO₃)₃ is a recently explored host for observing lanthanide luminescence. This compound synthesized and activated with Tb³⁺/Gd³⁺ is described. Trivalent activators Tb³⁺ and Gd³⁺ occupy yttrium sites. Intense characteristic emission is observed for both these activators. In case of Gd³⁺, both excitation and emission lines arise in f-f transitions. Photo luminescence emission is obtained in UV region. In case of Tb³⁺, mild concentration quenching was observed above 10%. Prominent excitation of Tb³⁺ is in form of a band arising in f-d type transition while emission comes from f-f transitions. Emission lifetimes are of the order of milliseconds, typical of forbidden f-f transitions. Keywords: photoluminescence; borate; Gd³⁺; Tb³⁺.

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