Thermoluminescence properties of cerium and terbium doped alpha-strontium pyrophosphate

• Published in: Radiation measurements Vol. 129; p. 106192
• Main Authors: Lozano, I.B., Roman-Lopez, J., Valverde, M., Garcia-Hipolito, M., Díaz-Góngora, J.A.I., Castañeda, J.I. Guzman, Alarcon-Flores, G.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01-10-2019
• Subjects: Photoluminescence; Radioluminescence; Rare earths; Solvent evaporation synthesis; Strontium pyrophosphate; Thermoluminescence; Solvent evaporation synthesis; Rare earths; Radioluminescence; Strontium pyrophosphate; Photoluminescence; Thermoluminescence
• ISSN: 1350-4487; 1879-0925
• DOI: 10.1016/j.radmeas.2019.106192

In this work, cerium and terbium doped strontium pyrophosphate (Sr2P2O7:Ce3+ and Sr2P2O7:Tb3+) materials were synthesized by solvent evaporation method. X-ray diffraction (XRD) measurements confirm the formation of single and pure phase in both Ce3+ and Tb3+ doped Sr2P2O7 materials. Ce3+ (5d1 → 4f0) and Tb3+ (5D3 → 7FJ=5,4,3 and 5D4 → 7FJ=6,5,4,3) transitions are observed in the photoluminescence (PL) and radioluminescence (RL) spectra. Thermoluminescence (TL) glow curve of both Ce3+ and Tb3+ materials shows the formation of a well resolved peak 1 around 84–88 °C along with a shouldered peak 2 around 150–156 °C. Some TL properties of both Ce3+ and Tb3+ doped Sr2P2O7 materials are analyzed using the whole TL glow curve and the isolated peak 2, which was isolated by preheating the samples at 130 °C with a 2 °C/s heating rate. The isolated peak 2 of both Sr2P2O7:Ce3+ and Sr2P2O7:Tb3+ compounds shows good TL properties.
•Ce3+ and Tb3+ doped Sr2P2O7 samples were synthesized by solvent evaporation method.•TL properties were studied on both Ce3+ and Tb3+ doped Sr2P2O7.•Similar Ce3+ (5d1.→4f1) and Tb3+ (5D3, 5D4→7FJ) emissions were observed by PL and RL•TL glow curve of Ce3+ and Tb3+ doped Sr2P2O7 materials displays two overlapping peaks.•The isolated TL peak 2 of both Ce3+ and Tb3+ samples show good TL properties.