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Super-multi-elements doped BiTa7O19:Er3+/Yb3+ with excellent upconversion luminescence.

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Title: Super-multi-elements doped BiTa7O19:Er3+/Yb3+ with excellent upconversion luminescence.
Authors: Li, Lei1 (AUTHOR), Cao, Yongze1 (AUTHOR) cyz@dlmu.edu.cn, Yan, Xianglan1 (AUTHOR), Wang, Xuekai1 (AUTHOR), Zhang, Xizhen1 (AUTHOR), Xu, Sai1 (AUTHOR), Liu, Tianshuo2 (AUTHOR), Chen, Baojiu1 (AUTHOR) bjchen@dlmu.edu.cn
Source: Applied Physics A: Materials Science & Processing. Jun2025, Vol. 131 Issue 6, p1-11. 11p.
Subjects: Energy levels (Quantum mechanics), Multiphoton processes, Solar temperature, Solar cells, X-ray diffraction, Photon upconversion
Abstract: Fourteen kinds of elements were successfully doped on BiTa7O19 (BTO):Er3+/Yb3+ upconversion luminescence phosphors (UCLPs) by solid phase sintering method. Super-multi-elements doping decreases the phonon vibration and central symmetry of oxygen coordination of luminescence center, and increases structural disorder. Under the excitation of 980 nm laser, the integral intensity of green upconversion luminescence (UCL) reached 2.37 times of β-NaYF4:Er3+/Yb3+. In situ varied-temperature XRD was employed to test the microstructure of super-multi-elements doped sample with temperature. The results show that the cell volume expands first and then shrinks with the increase of temperature. It is proved that the change of the distance between Er3+ and Yb3+ with temperature leads to the change of n value in the multi-photon process. The highest relative temperature sensitivity is 0.00726 K− 1 at 303 K based on the luminescence intensity branch ratio (LIR) of thermally coupled energy levels. Ultra-multi-elements doped BTO:Er3+/Yb3+ has high pure green UCL intensity, which is expected to replace fluoride in some high temperature or acid-base environments, and can be applied in luminescence displays, solar cells or temperature sensing. [ABSTRACT FROM AUTHOR]
Copyright of Applied Physics A: Materials Science & Processing is the property of Springer Nature 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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  Data: Super-multi-elements doped BiTa<subscript>7</subscript>O<subscript>19</subscript>:Er<superscript>3+</superscript>/Yb<superscript>3+</superscript> with excellent upconversion luminescence.
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  Data: <searchLink fieldCode="AR" term="%22Li%2C+Lei%22">Li, Lei</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="%22Yan%2C+Xianglan%22">Yan, Xianglan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Xuekai%22">Wang, Xuekai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Xizhen%22">Zhang, Xizhen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Xu%2C+Sai%22">Xu, Sai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Tianshuo%22">Liu, Tianshuo</searchLink><relatesTo>2</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="%22Applied+Physics+A%3A+Materials+Science+%26+Processing%22">Applied Physics A: Materials Science & Processing</searchLink>. Jun2025, Vol. 131 Issue 6, p1-11. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Energy+levels+%28Quantum+mechanics%29%22">Energy levels (Quantum mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Multiphoton+processes%22">Multiphoton processes</searchLink><br /><searchLink fieldCode="DE" term="%22Solar+temperature%22">Solar temperature</searchLink><br /><searchLink fieldCode="DE" term="%22Solar+cells%22">Solar cells</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+diffraction%22">X-ray diffraction</searchLink><br /><searchLink fieldCode="DE" term="%22Photon+upconversion%22">Photon upconversion</searchLink>
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  Label: Abstract
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  Data: Fourteen kinds of elements were successfully doped on BiTa7O19 (BTO):Er3+/Yb3+ upconversion luminescence phosphors (UCLPs) by solid phase sintering method. Super-multi-elements doping decreases the phonon vibration and central symmetry of oxygen coordination of luminescence center, and increases structural disorder. Under the excitation of 980 nm laser, the integral intensity of green upconversion luminescence (UCL) reached 2.37 times of β-NaYF4:Er3+/Yb3+. In situ varied-temperature XRD was employed to test the microstructure of super-multi-elements doped sample with temperature. The results show that the cell volume expands first and then shrinks with the increase of temperature. It is proved that the change of the distance between Er3+ and Yb3+ with temperature leads to the change of n value in the multi-photon process. The highest relative temperature sensitivity is 0.00726 K− 1 at 303 K based on the luminescence intensity branch ratio (LIR) of thermally coupled energy levels. Ultra-multi-elements doped BTO:Er3+/Yb3+ has high pure green UCL intensity, which is expected to replace fluoride in some high temperature or acid-base environments, and can be applied in luminescence displays, solar cells or temperature sensing. [ABSTRACT FROM AUTHOR]
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  Label:
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  Data: <i>Copyright of Applied Physics A: Materials Science & Processing is the property of Springer Nature 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: 10.1007/s00339-025-08641-5
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      – SubjectFull: Multiphoton processes
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      – SubjectFull: Solar temperature
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      – SubjectFull: Solar cells
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      – SubjectFull: X-ray diffraction
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      – SubjectFull: Photon upconversion
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      – TitleFull: Super-multi-elements doped BiTa7O19:Er3+/Yb3+ with excellent upconversion luminescence.
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            NameFull: Li, Lei
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              M: 06
              Text: Jun2025
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