Luminescence, scintillation, and energy transfer in SiO2–Al2O3–B2O3–Gd2O3:Ce3+, Pr3+ glasses. Issue 9 (17th May 2017)

• Record Type: Journal Article
• Authors: Lertloypanyachai, Prapon; Chewpraditkul, Weerapong; Pattanaboonmee, Nakarin; Chen, Danping; Babin, Vladimir; Beitlerova, Alena; Nikl, Martin
• Is Part Of: Physica status solidi. Volume 214:Issue 9(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-05-17
• Subjects: Ce3+ -- energy transfer -- luminescence -- oxide glasses -- Pr3+ -- scintillation; Solid state physics -- Periodicals; Solids -- Industrial applications -- Periodicals; 530.41
• DOI: 10.1002/pssa.201700072
• Languages: English
• ISSNs: 1862-6300

Abstract

Abstract : Ce 3+, Pr 3+ ‐codoped SiO2 –Al2 O3 –B2 O3 –Gd2 O3 glasses (SABG:Ce, Pr) were prepared by melt quenching under a CO reducing atmosphere. Luminescence properties were investigated under UV and X‐ray excitations. A dominant emission band at 430 nm belonging to the Ce 3+ :5d1 → 4f transition was observed in the photo‐ and radio‐luminescence spectra. The energy transfer occurs from this Ce 3+ band toward the 3 PJ levels of Pr 3+ with an efficiency of up to 24%, followed by the reduction of integrated luminescence intensity with an increasing Pr 3+ concentration. This result is attributed to the increase in the reabsorption of Ce 3+ luminescence and the non‐radiative energy transfer toward the 3 PJ levels of Pr 3+ . The cross‐relaxation process within the Pr 3+ pairs can further diminish the total luminescence yield at high Pr 3+ concentrations. The integral scintillation efficiency and light yield measurements were carried out and compared to the reference Bi4 Ge3 O12 (BGO) crystal.