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Outstanding blue upconversion luminescence and thermal enhancement behavior in BiTa7O19:Tm3+/Yb3+ phosphors.

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Title: Outstanding blue upconversion luminescence and thermal enhancement behavior in BiTa7O19:Tm3+/Yb3+ phosphors.
Authors: Yan, Xianglan1 (AUTHOR), Cao, Yongze1 (AUTHOR) cyz@dlmu.edu.cn, Liu, Tianshuo2 (AUTHOR), Wang, Xuekai1 (AUTHOR), Li, Lei1 (AUTHOR), Zhang, Jinsu1 (AUTHOR), Chen, Baojiu1 (AUTHOR) bjchen@dlmu.edu.cn
Source: Ceramics International. Sep2024:Part B, Vol. 50 Issue 18, p33995-34004. 10p.
Subjects: Luminescence, Electron transitions, Photon upconversion, Phosphors, Branching ratios, High temperatures, Doping agents (Chemistry), Thermography
Abstract: Extremely intense blue upconversion luminescence (UCL) is got in Tm3+/Yb3+ co-doped BiTa 7 O 19 (BTO) phosphors, which are synthesized by solid phase sintering. The doping concentration of Tm3+ is fixed at 7 mol%, and the concentration of Yb3+ is adjusted. When the concentration of Yb3+ is 80 mol%, the strongest blue UCL can be obtained under 980 nm laser excitation. The blue UCL integral intensity under 808 + 980 nm laser co-excitation is 1.54 times of the sum of intensity under 808 and 980 nm single excitation, respectively. Blue UCL thermal enhancement behavior was found for all the samples under 808 or 785 nm laser excitation, and blue UCL thermal quenching happened under 660, 660 + 808, and 359 nm excitations. It is demonstrated that UCL thermal enhancement behavior is caused by oxygen defects. The possible electron transition pathways are proposed under excitation with different laser wavelengths. Using the luminescence intensity branching ratio (LIR) technique, the maximum relative temperature sensitivity range is calculated to be from 0.00610 to 0.00732 K−1 at 303 K. The experimental results show that BTO:Tm3+/Yb3+ has excellent blue UCL with thermal enhancement, which can have some applications in the field of UCL display and temperature sensing in high temperature environment. [ABSTRACT FROM AUTHOR]
Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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Header DbId: egs
DbLabel: Engineering Source
An: 178598480
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PubTypeId: academicJournal
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  Label: Title
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  Data: Outstanding blue upconversion luminescence and thermal enhancement behavior in BiTa7O19:Tm3+/Yb3+ phosphors.
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  Data: <searchLink fieldCode="AR" term="%22Yan%2C+Xianglan%22">Yan, Xianglan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cao%2C+Yongze%22">Cao, Yongze</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> cyz@dlmu.edu.cn</i><br /><searchLink fieldCode="AR" term="%22Liu%2C+Tianshuo%22">Liu, Tianshuo</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Xuekai%22">Wang, Xuekai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Lei%22">Li, Lei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Jinsu%22">Zhang, Jinsu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Chen%2C+Baojiu%22">Chen, Baojiu</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> bjchen@dlmu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Sep2024:Part B, Vol. 50 Issue 18, p33995-34004. 10p.
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  Data: <searchLink fieldCode="DE" term="%22Luminescence%22">Luminescence</searchLink><br /><searchLink fieldCode="DE" term="%22Electron+transitions%22">Electron transitions</searchLink><br /><searchLink fieldCode="DE" term="%22Photon+upconversion%22">Photon upconversion</searchLink><br /><searchLink fieldCode="DE" term="%22Phosphors%22">Phosphors</searchLink><br /><searchLink fieldCode="DE" term="%22Branching+ratios%22">Branching ratios</searchLink><br /><searchLink fieldCode="DE" term="%22High+temperatures%22">High temperatures</searchLink><br /><searchLink fieldCode="DE" term="%22Doping+agents+%28Chemistry%29%22">Doping agents (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Thermography%22">Thermography</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Extremely intense blue upconversion luminescence (UCL) is got in Tm3+/Yb3+ co-doped BiTa 7 O 19 (BTO) phosphors, which are synthesized by solid phase sintering. The doping concentration of Tm3+ is fixed at 7 mol%, and the concentration of Yb3+ is adjusted. When the concentration of Yb3+ is 80 mol%, the strongest blue UCL can be obtained under 980 nm laser excitation. The blue UCL integral intensity under 808 + 980 nm laser co-excitation is 1.54 times of the sum of intensity under 808 and 980 nm single excitation, respectively. Blue UCL thermal enhancement behavior was found for all the samples under 808 or 785 nm laser excitation, and blue UCL thermal quenching happened under 660, 660 + 808, and 359 nm excitations. It is demonstrated that UCL thermal enhancement behavior is caused by oxygen defects. The possible electron transition pathways are proposed under excitation with different laser wavelengths. Using the luminescence intensity branching ratio (LIR) technique, the maximum relative temperature sensitivity range is calculated to be from 0.00610 to 0.00732 K−1 at 303 K. The experimental results show that BTO:Tm3+/Yb3+ has excellent blue UCL with thermal enhancement, which can have some applications in the field of UCL display and temperature sensing in high temperature environment. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Ceramics International is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1016/j.ceramint.2024.06.219
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      – Code: eng
        Text: English
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      – SubjectFull: Electron transitions
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      – SubjectFull: Phosphors
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      – SubjectFull: Branching ratios
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      – SubjectFull: High temperatures
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      – SubjectFull: Doping agents (Chemistry)
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      – SubjectFull: Thermography
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      – TitleFull: Outstanding blue upconversion luminescence and thermal enhancement behavior in BiTa7O19:Tm3+/Yb3+ phosphors.
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              M: 09
              Text: Sep2024:Part B
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              Y: 2024
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