{"title":"基于热致变色 Ag+ 掺杂 0D 锌基卤化物的热增强型自俘获激子发射","authors":"Meng Wang, Xu Chen, Gaoqiang Li, Fei Zhang, Xinzhen Ji, Zhuangzhuang Ma, Gencai Pan, Mochen Jia, Ying Liu, Yongtao Tian, Xinjian Li, Wen Xu, Chongxin Shan, Zhifeng Shi","doi":"10.1002/lpor.202400752","DOIUrl":null,"url":null,"abstract":"Thermochromic materials, known for their unique ability to change optical properties with temperature, have broad applications, including in thermochromic light-emitting diodes (LEDs). However, the scarcity of efficient and stable thermochromic phosphors limits their development. In this study, the development of a novel thermochromic phosphor based on zero-dimensional (0D) inorganic metal halides is reported. The 0D Cs<sub>2</sub>ZnBr<sub>4</sub>:Ag<sup>+</sup> phosphors show thermally enhanced self-trapped exciton (STE) emission across a wide temperature range from 120 to 300 K with the emitted wavelength changing correspondingly. Temperature-dependent photoluminescence (PL), time-resolved PL, and density functional theory calculations confirm that the thermally enhanced STE emission originates from the passivated defect/traps in Cs<sub>2</sub>ZnBr<sub>4</sub> and the thermally assisted energy transfer from the host to STEs formed by [AgBr<sub>4</sub>]<sup>3–</sup> tetrahedron with matrix phonons complementing the energy mismatch. Furthermore, the reversible thermochromic LEDs based on Cs<sub>2</sub>ZnBr<sub>4</sub>:Ag<sup>+</sup> phosphors are successfully prepared. Overall, these findings provide a future design of high-efficiency thermally enhanced luminescent materials and pave a new way for developing thermochromic materials for functional LED illumination.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":null,"pages":null},"PeriodicalIF":9.8000,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Thermally Enhanced Self-Trapped Exciton Emission Based on Thermochromic Ag+ doping 0D Zinc-Based Halides\",\"authors\":\"Meng Wang, Xu Chen, Gaoqiang Li, Fei Zhang, Xinzhen Ji, Zhuangzhuang Ma, Gencai Pan, Mochen Jia, Ying Liu, Yongtao Tian, Xinjian Li, Wen Xu, Chongxin Shan, Zhifeng Shi\",\"doi\":\"10.1002/lpor.202400752\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Thermochromic materials, known for their unique ability to change optical properties with temperature, have broad applications, including in thermochromic light-emitting diodes (LEDs). However, the scarcity of efficient and stable thermochromic phosphors limits their development. In this study, the development of a novel thermochromic phosphor based on zero-dimensional (0D) inorganic metal halides is reported. The 0D Cs<sub>2</sub>ZnBr<sub>4</sub>:Ag<sup>+</sup> phosphors show thermally enhanced self-trapped exciton (STE) emission across a wide temperature range from 120 to 300 K with the emitted wavelength changing correspondingly. Temperature-dependent photoluminescence (PL), time-resolved PL, and density functional theory calculations confirm that the thermally enhanced STE emission originates from the passivated defect/traps in Cs<sub>2</sub>ZnBr<sub>4</sub> and the thermally assisted energy transfer from the host to STEs formed by [AgBr<sub>4</sub>]<sup>3–</sup> tetrahedron with matrix phonons complementing the energy mismatch. Furthermore, the reversible thermochromic LEDs based on Cs<sub>2</sub>ZnBr<sub>4</sub>:Ag<sup>+</sup> phosphors are successfully prepared. Overall, these findings provide a future design of high-efficiency thermally enhanced luminescent materials and pave a new way for developing thermochromic materials for functional LED illumination.\",\"PeriodicalId\":204,\"journal\":{\"name\":\"Laser & Photonics Reviews\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":9.8000,\"publicationDate\":\"2024-07-03\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Laser & Photonics Reviews\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1002/lpor.202400752\",\"RegionNum\":1,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"OPTICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Laser & Photonics Reviews","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1002/lpor.202400752","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
Thermally Enhanced Self-Trapped Exciton Emission Based on Thermochromic Ag+ doping 0D Zinc-Based Halides
Thermochromic materials, known for their unique ability to change optical properties with temperature, have broad applications, including in thermochromic light-emitting diodes (LEDs). However, the scarcity of efficient and stable thermochromic phosphors limits their development. In this study, the development of a novel thermochromic phosphor based on zero-dimensional (0D) inorganic metal halides is reported. The 0D Cs2ZnBr4:Ag+ phosphors show thermally enhanced self-trapped exciton (STE) emission across a wide temperature range from 120 to 300 K with the emitted wavelength changing correspondingly. Temperature-dependent photoluminescence (PL), time-resolved PL, and density functional theory calculations confirm that the thermally enhanced STE emission originates from the passivated defect/traps in Cs2ZnBr4 and the thermally assisted energy transfer from the host to STEs formed by [AgBr4]3– tetrahedron with matrix phonons complementing the energy mismatch. Furthermore, the reversible thermochromic LEDs based on Cs2ZnBr4:Ag+ phosphors are successfully prepared. Overall, these findings provide a future design of high-efficiency thermally enhanced luminescent materials and pave a new way for developing thermochromic materials for functional LED illumination.
期刊介绍:
Laser & Photonics Reviews is a reputable journal that publishes high-quality Reviews, original Research Articles, and Perspectives in the field of photonics and optics. It covers both theoretical and experimental aspects, including recent groundbreaking research, specific advancements, and innovative applications.
As evidence of its impact and recognition, Laser & Photonics Reviews boasts a remarkable 2022 Impact Factor of 11.0, according to the Journal Citation Reports from Clarivate Analytics (2023). Moreover, it holds impressive rankings in the InCites Journal Citation Reports: in 2021, it was ranked 6th out of 101 in the field of Optics, 15th out of 161 in Applied Physics, and 12th out of 69 in Condensed Matter Physics.
The journal uses the ISSN numbers 1863-8880 for print and 1863-8899 for online publications.