Yogeshri G. Bagekari , Kishor H. Gavhane , Preeti P. Kulkarni , Akash P. Jadhav , Sandhya B. Deshmukh , Mahesh S. Bhadane , Shailendra S. Dahiwale , Sanjay D. Dhole
{"title":"ce掺杂Ca2B2O5荧光粉γ辐射诱导阱参数与剂量学性质的关系","authors":"Yogeshri G. Bagekari , Kishor H. Gavhane , Preeti P. Kulkarni , Akash P. Jadhav , Sandhya B. Deshmukh , Mahesh S. Bhadane , Shailendra S. Dahiwale , Sanjay D. Dhole","doi":"10.1016/j.jlumin.2025.121487","DOIUrl":null,"url":null,"abstract":"<div><div>This study investigates the structural, morphological, photoluminescence, and thermoluminescence dosimetric properties of Ce-doped Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub> phosphors. The crystalline structure of the synthesized phosphor powder was determined using powder X-ray diffraction (PXRD), confirming a monoclinic structure. Scanning electron microscopy (SEM) revealed an irregular morphology with a non-uniform size distribution having an average particle size of approximately 0.75μm. Fourier transform infrared (FTIR) spectroscopy identified the presence of B–O stretching vibrations and other functional groups, which confirms the material's composition. Photoluminescence (PL) studies demonstrated intense blue luminescence, attributed to the 5d→4f transitions of Ce<sup>3+</sup> ions. Thermoluminescence (TL) glow curve optimization was conducted by varying Ce<sup>3+</sup> concentrations in Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub> phosphor samples. The optimized Ce-doped Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub> (1.5 mol % Ce) exhibited a single TL peak at 259 °C, indicative of deeper level traps. The linear dose-response of Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub>:1.5 mol % Ce<sup>3+</sup> phosphor was analyzed, revealing a linearity fit curve with a regression coefficient (R<sup>2</sup>) value of 0.98 across a dose range from 0.5 Gy to 850 Gy. Experimental TL glow curve studies using the T<sub>m</sub>–T<sub>stop</sub> and Initial Rise Method (IRM) techniques identified five distinct trapping levels, with activation energies 0.9 eV, 1 eV, 1.27 eV, 1.43 eV, and 1.6 eV. These findings suggest that Ce-doped Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub> phosphors have potential applications in various luminescent devices and in radiation dosimetry.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121487"},"PeriodicalIF":3.6000,"publicationDate":"2025-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Correlation between gamma radiation induced trap parameters and dosimetric properties of Ce-doped Ca2B2O5 phosphor\",\"authors\":\"Yogeshri G. Bagekari , Kishor H. Gavhane , Preeti P. Kulkarni , Akash P. Jadhav , Sandhya B. Deshmukh , Mahesh S. Bhadane , Shailendra S. Dahiwale , Sanjay D. Dhole\",\"doi\":\"10.1016/j.jlumin.2025.121487\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study investigates the structural, morphological, photoluminescence, and thermoluminescence dosimetric properties of Ce-doped Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub> phosphors. The crystalline structure of the synthesized phosphor powder was determined using powder X-ray diffraction (PXRD), confirming a monoclinic structure. Scanning electron microscopy (SEM) revealed an irregular morphology with a non-uniform size distribution having an average particle size of approximately 0.75μm. Fourier transform infrared (FTIR) spectroscopy identified the presence of B–O stretching vibrations and other functional groups, which confirms the material's composition. Photoluminescence (PL) studies demonstrated intense blue luminescence, attributed to the 5d→4f transitions of Ce<sup>3+</sup> ions. Thermoluminescence (TL) glow curve optimization was conducted by varying Ce<sup>3+</sup> concentrations in Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub> phosphor samples. The optimized Ce-doped Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub> (1.5 mol % Ce) exhibited a single TL peak at 259 °C, indicative of deeper level traps. The linear dose-response of Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub>:1.5 mol % Ce<sup>3+</sup> phosphor was analyzed, revealing a linearity fit curve with a regression coefficient (R<sup>2</sup>) value of 0.98 across a dose range from 0.5 Gy to 850 Gy. Experimental TL glow curve studies using the T<sub>m</sub>–T<sub>stop</sub> and Initial Rise Method (IRM) techniques identified five distinct trapping levels, with activation energies 0.9 eV, 1 eV, 1.27 eV, 1.43 eV, and 1.6 eV. These findings suggest that Ce-doped Ca<sub>2</sub>B<sub>2</sub>O<sub>5</sub> phosphors have potential applications in various luminescent devices and in radiation dosimetry.</div></div>\",\"PeriodicalId\":16159,\"journal\":{\"name\":\"Journal of Luminescence\",\"volume\":\"287 \",\"pages\":\"Article 121487\"},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2025-08-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Luminescence\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0022231325004272\",\"RegionNum\":3,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Luminescence","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0022231325004272","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"OPTICS","Score":null,"Total":0}
Correlation between gamma radiation induced trap parameters and dosimetric properties of Ce-doped Ca2B2O5 phosphor
This study investigates the structural, morphological, photoluminescence, and thermoluminescence dosimetric properties of Ce-doped Ca2B2O5 phosphors. The crystalline structure of the synthesized phosphor powder was determined using powder X-ray diffraction (PXRD), confirming a monoclinic structure. Scanning electron microscopy (SEM) revealed an irregular morphology with a non-uniform size distribution having an average particle size of approximately 0.75μm. Fourier transform infrared (FTIR) spectroscopy identified the presence of B–O stretching vibrations and other functional groups, which confirms the material's composition. Photoluminescence (PL) studies demonstrated intense blue luminescence, attributed to the 5d→4f transitions of Ce3+ ions. Thermoluminescence (TL) glow curve optimization was conducted by varying Ce3+ concentrations in Ca2B2O5 phosphor samples. The optimized Ce-doped Ca2B2O5 (1.5 mol % Ce) exhibited a single TL peak at 259 °C, indicative of deeper level traps. The linear dose-response of Ca2B2O5:1.5 mol % Ce3+ phosphor was analyzed, revealing a linearity fit curve with a regression coefficient (R2) value of 0.98 across a dose range from 0.5 Gy to 850 Gy. Experimental TL glow curve studies using the Tm–Tstop and Initial Rise Method (IRM) techniques identified five distinct trapping levels, with activation energies 0.9 eV, 1 eV, 1.27 eV, 1.43 eV, and 1.6 eV. These findings suggest that Ce-doped Ca2B2O5 phosphors have potential applications in various luminescent devices and in radiation dosimetry.
期刊介绍:
The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid.
We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.