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Structural and photoluminescence properties of Sm, Dy, Er, Eu, Ce and Nd ions doped YPO4.

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Title: Structural and photoluminescence properties of Sm, Dy, Er, Eu, Ce and Nd ions doped YPO4.
Authors: Sharma, Suruchi1 (AUTHOR), Khanna, Atul1 (AUTHOR) atul.phy@gndu.ac.in, Fabian, Margit2 (AUTHOR), González-Alonso, David1,3 (AUTHOR) david.gonzalezalonso@unican.es, Valiente, Rafael3 (AUTHOR), González-Barriuso, Marina4 (AUTHOR), González, Fernando4 (AUTHOR)
Source: Ceramics International. Aug2025:Part B, Vol. 51 Issue 19, p29126-29137. 12p.
Subjects: Rare earth ions, Neutron diffraction, X-ray diffraction, Raman spectroscopy, Xenotime, Photon upconversion
Abstract: RE-doped YPO 4 (RE = Sm, Dy, Er, Eu, Ce, and Nd) powder samples are synthesised via high-temperature solid-state sintering at temperatures up to 1300 °C, and their structural and photoluminescent properties are thoroughly characterised. X-ray and neutron diffraction studies confirmed the formation of a single-phase xenotime (tetragonal) YPO 4 structure. The short-range structure consists of YO 8 and PO 4 units. Raman spectroscopy revealed peaks corresponding to the symmetric and asymmetric stretching vibrational modes of P–O bonds in the PO 4 units, indicating that RE doping does not significantly alter the short-range structural framework. The incorporation of RE ions into the YPO 4 matrix enables emission across the entire UV–visible spectrum. Specifically, Eu3+ (excited at 697 nm) and Sm3+ (excited at 404 nm) produce red emission, while Dy3+ exhibits blue emission when excited at 365 nm. Er3+-doped samples show red and green upconversion (UC) emission upon 980 nm excitation. Additionally, Nd3+ displays mid-infrared emission under 753 nm excitation, whereas Ce3+ doping results in blue emission under UV irradiation at 263 nm. Fluorescence lifetime measurements indicate that Er3+- and Nd3+-doped samples exhibit lifetimes below 5 μs and 8.6(3) μs, respectively. In contrast, Dy3+, Sm3+, and Eu3+ show significantly longer lifetimes, ranging from 0.34(1) to 2.75(1) ms. [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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  Label: Title
  Group: Ti
  Data: Structural and photoluminescence properties of Sm, Dy, Er, Eu, Ce and Nd ions doped YPO4.
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  Data: <searchLink fieldCode="AR" term="%22Sharma%2C+Suruchi%22">Sharma, Suruchi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Khanna%2C+Atul%22">Khanna, Atul</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> atul.phy@gndu.ac.in</i><br /><searchLink fieldCode="AR" term="%22Fabian%2C+Margit%22">Fabian, Margit</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22González-Alonso%2C+David%22">González-Alonso, David</searchLink><relatesTo>1,3</relatesTo> (AUTHOR)<i> david.gonzalezalonso@unican.es</i><br /><searchLink fieldCode="AR" term="%22Valiente%2C+Rafael%22">Valiente, Rafael</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22González-Barriuso%2C+Marina%22">González-Barriuso, Marina</searchLink><relatesTo>4</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22González%2C+Fernando%22">González, Fernando</searchLink><relatesTo>4</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Ceramics+International%22">Ceramics International</searchLink>. Aug2025:Part B, Vol. 51 Issue 19, p29126-29137. 12p.
– Name: Subject
  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Rare+earth+ions%22">Rare earth ions</searchLink><br /><searchLink fieldCode="DE" term="%22Neutron+diffraction%22">Neutron diffraction</searchLink><br /><searchLink fieldCode="DE" term="%22X-ray+diffraction%22">X-ray diffraction</searchLink><br /><searchLink fieldCode="DE" term="%22Raman+spectroscopy%22">Raman spectroscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Xenotime%22">Xenotime</searchLink><br /><searchLink fieldCode="DE" term="%22Photon+upconversion%22">Photon upconversion</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: RE-doped YPO 4 (RE = Sm, Dy, Er, Eu, Ce, and Nd) powder samples are synthesised via high-temperature solid-state sintering at temperatures up to 1300 °C, and their structural and photoluminescent properties are thoroughly characterised. X-ray and neutron diffraction studies confirmed the formation of a single-phase xenotime (tetragonal) YPO 4 structure. The short-range structure consists of YO 8 and PO 4 units. Raman spectroscopy revealed peaks corresponding to the symmetric and asymmetric stretching vibrational modes of P–O bonds in the PO 4 units, indicating that RE doping does not significantly alter the short-range structural framework. The incorporation of RE ions into the YPO 4 matrix enables emission across the entire UV–visible spectrum. Specifically, Eu3+ (excited at 697 nm) and Sm3+ (excited at 404 nm) produce red emission, while Dy3+ exhibits blue emission when excited at 365 nm. Er3+-doped samples show red and green upconversion (UC) emission upon 980 nm excitation. Additionally, Nd3+ displays mid-infrared emission under 753 nm excitation, whereas Ce3+ doping results in blue emission under UV irradiation at 263 nm. Fluorescence lifetime measurements indicate that Er3+- and Nd3+-doped samples exhibit lifetimes below 5 μs and 8.6(3) μs, respectively. In contrast, Dy3+, Sm3+, and Eu3+ show significantly longer lifetimes, ranging from 0.34(1) to 2.75(1) ms. [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.2025.04.118
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      – Code: eng
        Text: English
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        PageCount: 12
        StartPage: 29126
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        Type: general
      – SubjectFull: Neutron diffraction
        Type: general
      – SubjectFull: X-ray diffraction
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      – SubjectFull: Raman spectroscopy
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      – SubjectFull: Xenotime
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      – SubjectFull: Photon upconversion
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      – TitleFull: Structural and photoluminescence properties of Sm, Dy, Er, Eu, Ce and Nd ions doped YPO4.
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              M: 08
              Text: Aug2025:Part B
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              Y: 2025
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