{"title":"多功能CaGd2Ga4GeO12: Cr3+石榴石荧光粉的结构、近红外宽带发光和长余辉特性","authors":"Ying Ba, Yan Zhang, Yongzheng Fang, Jiayue Xu","doi":"10.1016/j.jlumin.2025.121489","DOIUrl":null,"url":null,"abstract":"<div><div>Near-infrared (NIR) long persistent phosphors (LPPs) have recently gained a lot of attention due to their significant potential in applications like information encryption, in vivo bioimaging, and military technologies. Nonetheless, the significant reduction in their brightness and duration to be a major issue. Consequently, the development of LPPs with enhanced luminescence intensity and prolonged duration is of great importance. In this study, we present a new near-infrared (NIR) luminescent phosphor particle (LPP), specifically CaGd<sub>2</sub>Ga<sub>4</sub>GeO<sub>12</sub>: Cr<sup>3+</sup> (CGGG: Cr<sup>3+</sup>). Under the irradiation of 448 nm blue light, the CGGG: Cr<sup>3+</sup> phosphors displays a larger full width at half maximum (FWHM) of 162 nm for emission. Following 5 min irradiation with 254 nm ultraviolet light, the instrument remained capable of detecting near-infrared emission signals after a 12 h interval. A detailed investigation was carried out on the crystal structure, electronic structure, thermal stability, luminescence characteristics, and afterglow behavior of this phosphor material. Moreover, an in-depth investigation into the mechanism of NIR LPPs was undertaken. Through thermoluminescence emission curve analysis, the trap distribution range in CGGG:Cr<sup>3+</sup> was also evaluated. In summary, these findings suggest that CGGG:Cr<sup>3+</sup> phosphor holds significant promise as a persistent near-infrared light-emitting material for advanced light source applications, including bio-imaging and information encryption.</div></div>","PeriodicalId":16159,"journal":{"name":"Journal of Luminescence","volume":"287 ","pages":"Article 121489"},"PeriodicalIF":3.6000,"publicationDate":"2025-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Structure, near-infrared broadband luminescence and long afterglow properties in CaGd2Ga4GeO12: Cr3+ garnet phosphor for multifunctional applications\",\"authors\":\"Ying Ba, Yan Zhang, Yongzheng Fang, Jiayue Xu\",\"doi\":\"10.1016/j.jlumin.2025.121489\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Near-infrared (NIR) long persistent phosphors (LPPs) have recently gained a lot of attention due to their significant potential in applications like information encryption, in vivo bioimaging, and military technologies. Nonetheless, the significant reduction in their brightness and duration to be a major issue. Consequently, the development of LPPs with enhanced luminescence intensity and prolonged duration is of great importance. In this study, we present a new near-infrared (NIR) luminescent phosphor particle (LPP), specifically CaGd<sub>2</sub>Ga<sub>4</sub>GeO<sub>12</sub>: Cr<sup>3+</sup> (CGGG: Cr<sup>3+</sup>). Under the irradiation of 448 nm blue light, the CGGG: Cr<sup>3+</sup> phosphors displays a larger full width at half maximum (FWHM) of 162 nm for emission. Following 5 min irradiation with 254 nm ultraviolet light, the instrument remained capable of detecting near-infrared emission signals after a 12 h interval. A detailed investigation was carried out on the crystal structure, electronic structure, thermal stability, luminescence characteristics, and afterglow behavior of this phosphor material. Moreover, an in-depth investigation into the mechanism of NIR LPPs was undertaken. Through thermoluminescence emission curve analysis, the trap distribution range in CGGG:Cr<sup>3+</sup> was also evaluated. In summary, these findings suggest that CGGG:Cr<sup>3+</sup> phosphor holds significant promise as a persistent near-infrared light-emitting material for advanced light source applications, including bio-imaging and information encryption.</div></div>\",\"PeriodicalId\":16159,\"journal\":{\"name\":\"Journal of Luminescence\",\"volume\":\"287 \",\"pages\":\"Article 121489\"},\"PeriodicalIF\":3.6000,\"publicationDate\":\"2025-08-24\",\"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/S0022231325004296\",\"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/S0022231325004296","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}
Structure, near-infrared broadband luminescence and long afterglow properties in CaGd2Ga4GeO12: Cr3+ garnet phosphor for multifunctional applications
Near-infrared (NIR) long persistent phosphors (LPPs) have recently gained a lot of attention due to their significant potential in applications like information encryption, in vivo bioimaging, and military technologies. Nonetheless, the significant reduction in their brightness and duration to be a major issue. Consequently, the development of LPPs with enhanced luminescence intensity and prolonged duration is of great importance. In this study, we present a new near-infrared (NIR) luminescent phosphor particle (LPP), specifically CaGd2Ga4GeO12: Cr3+ (CGGG: Cr3+). Under the irradiation of 448 nm blue light, the CGGG: Cr3+ phosphors displays a larger full width at half maximum (FWHM) of 162 nm for emission. Following 5 min irradiation with 254 nm ultraviolet light, the instrument remained capable of detecting near-infrared emission signals after a 12 h interval. A detailed investigation was carried out on the crystal structure, electronic structure, thermal stability, luminescence characteristics, and afterglow behavior of this phosphor material. Moreover, an in-depth investigation into the mechanism of NIR LPPs was undertaken. Through thermoluminescence emission curve analysis, the trap distribution range in CGGG:Cr3+ was also evaluated. In summary, these findings suggest that CGGG:Cr3+ phosphor holds significant promise as a persistent near-infrared light-emitting material for advanced light source applications, including bio-imaging and information encryption.
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.