Study of the effects of Ga3+ co-doping on the Lu0.8Sc0.2BO3:Ce scintillation crystals

► Lu0.8Sc0.2BO3 crystals doped with 1 at%Ce3+ and co-doped with 1 at% and 3 at%Ga3+ were obtained. ► No positive contribution of the Ga3+ ions on the scintillation efficiency was found. ► The causes for the deterioration of scintillation efficiency by co-doping Ga3+ were revealed.