The luminescence properties and energy transfer mechanism of Pr3+ co-doped CLLBC: Ce crystal

Abstract

A co-doping strategy is an effective approach for enhancing the properties of luminescence materials. In this study, Pr³⁺ co-doped CLLBC:Ce crystals with varying concentrations of Ce and Pr³⁺ were successfully grown using the Bridgman method. The dimensions of the machined crystal samples were approximately Ф12 mm ∗ 6 mm. Characterization results of XRD and XPS confirmed the incorporation of Pr³⁺ into the CLLBC:Ce crystal host. The effects of the substitution amount of Pr³⁺ and Ce³⁺ on the luminescent properties and scintillation properties were systematically investigated by fluorescence spectroscopy, XEL, and decay kinetics. Energy transfer between Pr³⁺ and Ce³⁺ was observed, and the scintillation mechanism was comprehensively discussed. The results demonstrate that Pr³⁺ co-doping significantly enhances the luminescent properties of CLLBC:Ce crystals.