{"title":"Enhanced temperature sensing in lead-free Cs3Bi2Cl9 perovskite co-doping Yb3+/Er3+ for optical thermometry application","authors":"Maohao Yang, Wanyin Ge, Peng He, Qian Zhang, Xin Xie","doi":"10.1016/j.jallcom.2024.176701","DOIUrl":null,"url":null,"abstract":"A simple and rapid grinding method for preparing Er<ce:sup loc=\"post\">3+</ce:sup>-doped and Er<ce:sup loc=\"post\">3+</ce:sup>/Yb<ce:sup loc=\"post\">3+</ce:sup>co-doped Cs<ce:inf loc=\"post\">3</ce:inf>Bi<ce:inf loc=\"post\">2</ce:inf>Cl<ce:inf loc=\"post\">9</ce:inf> upconversion phosphors was developed. We avoid to employ strong acids as reaction solvents, aligning with the principles of green chemistry. By controlling the thermal treatment temperature and adding BiCl<ce:inf loc=\"post\">3</ce:inf>, a reversible phase transformation process between Cs<ce:inf loc=\"post\">3</ce:inf>Bi<ce:inf loc=\"post\">2</ce:inf>Cl<ce:inf loc=\"post\">9</ce:inf> and Cs<ce:inf loc=\"post\">3</ce:inf>BiCl<ce:inf loc=\"post\">6</ce:inf> perovskite phosphors was achieved. The Er<ce:sup loc=\"post\">3+</ce:sup>/Yb<ce:sup loc=\"post\">3+</ce:sup> co-doped Cs<ce:inf loc=\"post\">3</ce:inf>Bi<ce:inf loc=\"post\">2</ce:inf>Cl<ce:inf loc=\"post\">9</ce:inf> phosphors emit green light under 980 nm excitation, whereas Cs<ce:inf loc=\"post\">3</ce:inf>BiCl<ce:inf loc=\"post\">6</ce:inf> phosphors emit red light. Their temperature sensing performance was tested through variable-temperature processes. Compared to Er<ce:sup loc=\"post\">3+</ce:sup>-doped Cs<ce:inf loc=\"post\">3</ce:inf>Bi<ce:inf loc=\"post\">2</ce:inf>Cl<ce:inf loc=\"post\">9</ce:inf> phosphors, the co-doped Er<ce:sup loc=\"post\">3+</ce:sup>/Yb<ce:sup loc=\"post\">3+</ce:sup> phosphors have a higher relative sensitivity of 1.60 % K<ce:sup loc=\"post\">−1</ce:sup>. Compared to previously reported materials, Cs<ce:inf loc=\"post\">3</ce:inf>Bi<ce:inf loc=\"post\">2</ce:inf>Cl<ce:inf loc=\"post\">9</ce:inf> phosphors show enhanced sensitivity in temperature sensing. The study demonstrates that lead-free halide perovskites’ unique color-tunability not only underscores the innovativeness of this synthetic strategy but also provides a significant technological foundation for temperature sensing applications. Given their environmental friendliness and facile preparation process, these phosphors possess notable advantages for industrial production and hold promise as potential candidates for next-generation high-performance phosphor materials.","PeriodicalId":344,"journal":{"name":"Journal of Alloys and Compounds","volume":null,"pages":null},"PeriodicalIF":5.8000,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Alloys and Compounds","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1016/j.jallcom.2024.176701","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
A simple and rapid grinding method for preparing Er3+-doped and Er3+/Yb3+co-doped Cs3Bi2Cl9 upconversion phosphors was developed. We avoid to employ strong acids as reaction solvents, aligning with the principles of green chemistry. By controlling the thermal treatment temperature and adding BiCl3, a reversible phase transformation process between Cs3Bi2Cl9 and Cs3BiCl6 perovskite phosphors was achieved. The Er3+/Yb3+ co-doped Cs3Bi2Cl9 phosphors emit green light under 980 nm excitation, whereas Cs3BiCl6 phosphors emit red light. Their temperature sensing performance was tested through variable-temperature processes. Compared to Er3+-doped Cs3Bi2Cl9 phosphors, the co-doped Er3+/Yb3+ phosphors have a higher relative sensitivity of 1.60 % K−1. Compared to previously reported materials, Cs3Bi2Cl9 phosphors show enhanced sensitivity in temperature sensing. The study demonstrates that lead-free halide perovskites’ unique color-tunability not only underscores the innovativeness of this synthetic strategy but also provides a significant technological foundation for temperature sensing applications. Given their environmental friendliness and facile preparation process, these phosphors possess notable advantages for industrial production and hold promise as potential candidates for next-generation high-performance phosphor materials.
期刊介绍:
The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.