Optical thermometry and fingerprint detection in SrLa1−xEuxLiTeO6 phosphors with abnormal thermal quenching effect
To overcome the sensitivity limitation of conventional luminescence intensity ratio optical thermometers, we designed an optical thermometer using double-perovskite SrLa1-xEuxLiTeO6 phosphors based on abnormal thermal quenching effect. A series of red double-perovskite SrLa1−xEuxLiTeO6 phosphors wer...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2025-03-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/5.0262797 |
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| author | Zheng-Rong Xia Rong-Qing Li Qing-Hua Zheng Fang-Fang Liu Wei-Wei Zhou Kai-Xuan Yuan Yue Tong Wang Zhao |
| author_facet | Zheng-Rong Xia Rong-Qing Li Qing-Hua Zheng Fang-Fang Liu Wei-Wei Zhou Kai-Xuan Yuan Yue Tong Wang Zhao |
| author_sort | Zheng-Rong Xia |
| collection | DOAJ |
| description | To overcome the sensitivity limitation of conventional luminescence intensity ratio optical thermometers, we designed an optical thermometer using double-perovskite SrLa1-xEuxLiTeO6 phosphors based on abnormal thermal quenching effect. A series of red double-perovskite SrLa1−xEuxLiTeO6 phosphors were synthesized through a facile high-temperature solid-state reaction, and the photoluminescence properties and thermometric behaviors were thoroughly explored. The X-ray diffraction pattern and Rietveld refinement show that the compounds were formed in the monoclinic phase. The UV–visible spectra indicate that the optical bandgaps of the SrLa1−xEuxLiTeO6 (x = 0 and 0.5) phosphors were 3.56 and 3.42 eV, respectively. The optimized dopant concentration for Eu3+ was x = 0.5 with the concentration quenching mechanism of dipole–dipole interaction. Under different excitations, SrLa1−xEuxLiTeO6 phosphors exhibited opposite luminescent intensity variations with increased temperatures. Based on the abnormal thermal quenching phenomenon, the temperature-sensing performances of SrLa0.5Eu0.5LiTeO6 phosphors were extensively investigated using a dual-excitation single-band ratiometric strategy. A maximum relative sensitivity value was determined as 1.21% K−1 at 373 K. Moreover, the fluorescence images of fingerprints developed by SrLa0.5Eu0.5LiTeO6 phosphors were clearly visible, and level I–III detail features were highlighted. These results suggest that SrLa0.5Eu0.5LiTeO6 phosphors are prospective candidates for non-contact optical thermometry and latent fingerprint detection. |
| format | Article |
| id | doaj-art-ea4bdce1e1dd46c28dc4661cde0a0f2e |
| institution | DOAJ |
| issn | 2158-3226 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | AIP Publishing LLC |
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| series | AIP Advances |
| spelling | doaj-art-ea4bdce1e1dd46c28dc4661cde0a0f2e2025-08-20T03:06:24ZengAIP Publishing LLCAIP Advances2158-32262025-03-01153035021035021-1310.1063/5.0262797Optical thermometry and fingerprint detection in SrLa1−xEuxLiTeO6 phosphors with abnormal thermal quenching effectZheng-Rong Xia0Rong-Qing Li1Qing-Hua Zheng2Fang-Fang Liu3Wei-Wei Zhou4Kai-Xuan Yuan5Yue Tong6Wang Zhao7Anhui Engineering Research Center for Photoelectrocatalytic Electrode Materials, School of Electrical Engineering, Huainan Normal University, Huainan 232038, ChinaAnhui Engineering Research Center for Photoelectrocatalytic Electrode Materials, School of Electrical Engineering, Huainan Normal University, Huainan 232038, ChinaAnhui Engineering Research Center for Photoelectrocatalytic Electrode Materials, School of Electrical Engineering, Huainan Normal University, Huainan 232038, ChinaAnhui Engineering Research Center for Photoelectrocatalytic Electrode Materials, School of Electrical Engineering, Huainan Normal University, Huainan 232038, ChinaAnhui Engineering Research Center for Photoelectrocatalytic Electrode Materials, School of Electrical Engineering, Huainan Normal University, Huainan 232038, ChinaAnhui Engineering Research Center for Photoelectrocatalytic Electrode Materials, School of Electrical Engineering, Huainan Normal University, Huainan 232038, ChinaAnhui Engineering Research Center for Photoelectrocatalytic Electrode Materials, School of Electrical Engineering, Huainan Normal University, Huainan 232038, ChinaAnhui Engineering Research Center for Photoelectrocatalytic Electrode Materials, School of Electrical Engineering, Huainan Normal University, Huainan 232038, ChinaTo overcome the sensitivity limitation of conventional luminescence intensity ratio optical thermometers, we designed an optical thermometer using double-perovskite SrLa1-xEuxLiTeO6 phosphors based on abnormal thermal quenching effect. A series of red double-perovskite SrLa1−xEuxLiTeO6 phosphors were synthesized through a facile high-temperature solid-state reaction, and the photoluminescence properties and thermometric behaviors were thoroughly explored. The X-ray diffraction pattern and Rietveld refinement show that the compounds were formed in the monoclinic phase. The UV–visible spectra indicate that the optical bandgaps of the SrLa1−xEuxLiTeO6 (x = 0 and 0.5) phosphors were 3.56 and 3.42 eV, respectively. The optimized dopant concentration for Eu3+ was x = 0.5 with the concentration quenching mechanism of dipole–dipole interaction. Under different excitations, SrLa1−xEuxLiTeO6 phosphors exhibited opposite luminescent intensity variations with increased temperatures. Based on the abnormal thermal quenching phenomenon, the temperature-sensing performances of SrLa0.5Eu0.5LiTeO6 phosphors were extensively investigated using a dual-excitation single-band ratiometric strategy. A maximum relative sensitivity value was determined as 1.21% K−1 at 373 K. Moreover, the fluorescence images of fingerprints developed by SrLa0.5Eu0.5LiTeO6 phosphors were clearly visible, and level I–III detail features were highlighted. These results suggest that SrLa0.5Eu0.5LiTeO6 phosphors are prospective candidates for non-contact optical thermometry and latent fingerprint detection.http://dx.doi.org/10.1063/5.0262797 |
| spellingShingle | Zheng-Rong Xia Rong-Qing Li Qing-Hua Zheng Fang-Fang Liu Wei-Wei Zhou Kai-Xuan Yuan Yue Tong Wang Zhao Optical thermometry and fingerprint detection in SrLa1−xEuxLiTeO6 phosphors with abnormal thermal quenching effect AIP Advances |
| title | Optical thermometry and fingerprint detection in SrLa1−xEuxLiTeO6 phosphors with abnormal thermal quenching effect |
| title_full | Optical thermometry and fingerprint detection in SrLa1−xEuxLiTeO6 phosphors with abnormal thermal quenching effect |
| title_fullStr | Optical thermometry and fingerprint detection in SrLa1−xEuxLiTeO6 phosphors with abnormal thermal quenching effect |
| title_full_unstemmed | Optical thermometry and fingerprint detection in SrLa1−xEuxLiTeO6 phosphors with abnormal thermal quenching effect |
| title_short | Optical thermometry and fingerprint detection in SrLa1−xEuxLiTeO6 phosphors with abnormal thermal quenching effect |
| title_sort | optical thermometry and fingerprint detection in srla1 xeuxliteo6 phosphors with abnormal thermal quenching effect |
| url | http://dx.doi.org/10.1063/5.0262797 |
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