Jing Li, Dan Zhang, Yixi Wu, Lulu Li, Xinlian Zhang, Shiqing Xu and Junjie Zhang
{"title":"通过能量转移和陷阱共享实现多色余辉的 LiGa5O8:Tb3+/Sm3+ 共掺杂五倍子硅酸盐玻璃用于光学防伪","authors":"Jing Li, Dan Zhang, Yixi Wu, Lulu Li, Xinlian Zhang, Shiqing Xu and Junjie Zhang","doi":"10.1039/D4TC03171G","DOIUrl":null,"url":null,"abstract":"<p >Long afterglow materials with excellent optical properties and stable performance are urgently required, particularly in the fields of anti-counterfeiting and encryption. Nowadays, glass ceramics are promising candidates for afterglow, due to their good ability to capture photons and robust chemical stability. Here, a series of Tb<small><sup>3+</sup></small>/Sm<small><sup>3+</sup></small> co-doped gallosilicate glass precursors were prepared <em>via</em> a high-temperature melting method, forming transparent glass ceramics containing LiGa<small><sub>5</sub></small>O<small><sub>8</sub></small> nanocrystals by heat-treatment. The afterglow phenomenon was observed in these samples after turning off UV irradiation, and subsequent investigation showed that, by controlling the concentration of two rare earth ions Tb<small><sup>3+</sup></small> and Sm<small><sup>3+</sup></small>, the afterglow could be transitioned from green (LiGa<small><sub>5</sub></small>O<small><sub>8</sub></small>:Tb<small><sup>3+</sup></small>) to orange (LiGa<small><sub>5</sub></small>O<small><sub>8</sub></small>:Sm<small><sup>3+</sup></small>) and then to yellow (LiGa<small><sub>5</sub></small>O<small><sub>8</sub></small>:Tb<small><sup>3+</sup></small>,Sm<small><sup>3+</sup></small>). Structural analysis reveals that Tb<small><sup>3+</sup></small> and Sm<small><sup>3+</sup></small> ions have occupied the octahedral sites (Ga sites) in the LiGa<small><sub>5</sub></small>O<small><sub>8</sub></small> anti-spinel structure, which makes them close to intrinsic defects beneficial for the afterglow. Furthermore, the process of energy transfer from Tb<small><sup>3+</sup></small> to Sm<small><sup>3+</sup></small> ions and the sharing of oxygen vacancy defects are importantly outlined in order to elucidate the mechanism behind the multi-color afterglow phenomenon. The tunable afterglow-emitting glass ceramics provide a novel approach for optical anti-counterfeiting and information encryption, thereby enriching the visual diversity of displayed information.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":null,"pages":null},"PeriodicalIF":5.7000,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Multi-color afterglow of the LiGa5O8:Tb3+/Sm3+ co-doped gallosilicate glass via energy transfer and trap sharing for optical anti-counterfeiting†\",\"authors\":\"Jing Li, Dan Zhang, Yixi Wu, Lulu Li, Xinlian Zhang, Shiqing Xu and Junjie Zhang\",\"doi\":\"10.1039/D4TC03171G\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Long afterglow materials with excellent optical properties and stable performance are urgently required, particularly in the fields of anti-counterfeiting and encryption. Nowadays, glass ceramics are promising candidates for afterglow, due to their good ability to capture photons and robust chemical stability. Here, a series of Tb<small><sup>3+</sup></small>/Sm<small><sup>3+</sup></small> co-doped gallosilicate glass precursors were prepared <em>via</em> a high-temperature melting method, forming transparent glass ceramics containing LiGa<small><sub>5</sub></small>O<small><sub>8</sub></small> nanocrystals by heat-treatment. The afterglow phenomenon was observed in these samples after turning off UV irradiation, and subsequent investigation showed that, by controlling the concentration of two rare earth ions Tb<small><sup>3+</sup></small> and Sm<small><sup>3+</sup></small>, the afterglow could be transitioned from green (LiGa<small><sub>5</sub></small>O<small><sub>8</sub></small>:Tb<small><sup>3+</sup></small>) to orange (LiGa<small><sub>5</sub></small>O<small><sub>8</sub></small>:Sm<small><sup>3+</sup></small>) and then to yellow (LiGa<small><sub>5</sub></small>O<small><sub>8</sub></small>:Tb<small><sup>3+</sup></small>,Sm<small><sup>3+</sup></small>). Structural analysis reveals that Tb<small><sup>3+</sup></small> and Sm<small><sup>3+</sup></small> ions have occupied the octahedral sites (Ga sites) in the LiGa<small><sub>5</sub></small>O<small><sub>8</sub></small> anti-spinel structure, which makes them close to intrinsic defects beneficial for the afterglow. Furthermore, the process of energy transfer from Tb<small><sup>3+</sup></small> to Sm<small><sup>3+</sup></small> ions and the sharing of oxygen vacancy defects are importantly outlined in order to elucidate the mechanism behind the multi-color afterglow phenomenon. The tunable afterglow-emitting glass ceramics provide a novel approach for optical anti-counterfeiting and information encryption, thereby enriching the visual diversity of displayed information.</p>\",\"PeriodicalId\":84,\"journal\":{\"name\":\"Journal of Materials Chemistry C\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.7000,\"publicationDate\":\"2024-09-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Chemistry C\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2024/tc/d4tc03171g\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Chemistry C","FirstCategoryId":"1","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/tc/d4tc03171g","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Multi-color afterglow of the LiGa5O8:Tb3+/Sm3+ co-doped gallosilicate glass via energy transfer and trap sharing for optical anti-counterfeiting†
Long afterglow materials with excellent optical properties and stable performance are urgently required, particularly in the fields of anti-counterfeiting and encryption. Nowadays, glass ceramics are promising candidates for afterglow, due to their good ability to capture photons and robust chemical stability. Here, a series of Tb3+/Sm3+ co-doped gallosilicate glass precursors were prepared via a high-temperature melting method, forming transparent glass ceramics containing LiGa5O8 nanocrystals by heat-treatment. The afterglow phenomenon was observed in these samples after turning off UV irradiation, and subsequent investigation showed that, by controlling the concentration of two rare earth ions Tb3+ and Sm3+, the afterglow could be transitioned from green (LiGa5O8:Tb3+) to orange (LiGa5O8:Sm3+) and then to yellow (LiGa5O8:Tb3+,Sm3+). Structural analysis reveals that Tb3+ and Sm3+ ions have occupied the octahedral sites (Ga sites) in the LiGa5O8 anti-spinel structure, which makes them close to intrinsic defects beneficial for the afterglow. Furthermore, the process of energy transfer from Tb3+ to Sm3+ ions and the sharing of oxygen vacancy defects are importantly outlined in order to elucidate the mechanism behind the multi-color afterglow phenomenon. The tunable afterglow-emitting glass ceramics provide a novel approach for optical anti-counterfeiting and information encryption, thereby enriching the visual diversity of displayed information.
期刊介绍:
The Journal of Materials Chemistry is divided into three distinct sections, A, B, and C, each catering to specific applications of the materials under study:
Journal of Materials Chemistry A focuses primarily on materials intended for applications in energy and sustainability.
Journal of Materials Chemistry B specializes in materials designed for applications in biology and medicine.
Journal of Materials Chemistry C is dedicated to materials suitable for applications in optical, magnetic, and electronic devices.
Example topic areas within the scope of Journal of Materials Chemistry C are listed below. This list is neither exhaustive nor exclusive.
Bioelectronics
Conductors
Detectors
Dielectrics
Displays
Ferroelectrics
Lasers
LEDs
Lighting
Liquid crystals
Memory
Metamaterials
Multiferroics
Photonics
Photovoltaics
Semiconductors
Sensors
Single molecule conductors
Spintronics
Superconductors
Thermoelectrics
Topological insulators
Transistors