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Anti-thermal quenching phosphors based on the new phosphate host Ca3.6In3.6(PO4)6.

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Title: Anti-thermal quenching phosphors based on the new phosphate host Ca3.6In3.6(PO4)6.
Authors: Wang, Rong-Rong1,2 (AUTHOR), Zhang, Jing1,2,3 (AUTHOR), Liu, Yi-Jia1,2 (AUTHOR), Li, Gui-Hua1,2 (AUTHOR), Cai, Ge-Mei1,2 (AUTHOR) caigemei@csu.edu.cn
Source: Dalton Transactions: An International Journal of Inorganic Chemistry. 5/7/2023, Vol. 52 Issue 17, p5552-5562. 11p.
Subjects: Phosphate glass, Phosphors, Rietveld refinement, Crystal defects, Thermal electrons, Quantum efficiency
Abstract: To enhance the working quality of WLEDs, considerable efforts have been made to upgrade the thermal quenching resistance of existing phosphors or design new anti-thermal quenching (ATQ) phosphors. Developing a new phosphate matrix material with special structural features has great importance for the fabrication of ATQ phosphors. By phase relationship and composition analysis, we have prepared a novel compound Ca3.6In3.6(PO4)6 (CIP). Coupling ab initio and Rietveld refinement techniques, the novel structure of CIP with partly vacant cationic positions was solved. Taking this unique compound as the host and using the inequivalent substitution of Dy3+ for Ca2+, a series of C1−xIP:Dy3+ rice-white emitting phosphors were successfully developed. When the temperature was raised to 423 K, the emission intensity of C1−xIP:xDy3+ (x = 0.01, 0.03, and 0.05) increased to 103.8%, 108.2%, and 104.5% of the original intensity at 298 K, respectively. Except for the strong bonding network and inherent cationic vacancy in the lattice, the ATQ property of the C1−xIP:Dy3+ phosphors is mainly attributed to the generation of interstitial oxygen from the substitution of unequal ions, which releases electrons with the thermal stimulus, causing anomalous emission. Finally, we have explored the quantum efficiency of C1−xIP:0.03Dy3+ phosphor and the working performance of PC-WLED prepared with C1−xIP:0.03Dy3+ phosphor and 365 nm chip. The research work sheds light on the relationship between lattice defects and thermal stability, and meanwhile offers a new strategy for the development of ATQ phosphors. [ABSTRACT FROM AUTHOR]
Copyright of Dalton Transactions: An International Journal of Inorganic Chemistry is the property of Royal Society of Chemistry 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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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Anti-thermal quenching phosphors based on the new phosphate host Ca<subscript>3.6</subscript>In<subscript>3.6</subscript>(PO<subscript>4</subscript>)<subscript>6</subscript>.
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  Data: <searchLink fieldCode="AR" term="%22Wang%2C+Rong-Rong%22">Wang, Rong-Rong</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Jing%22">Zhang, Jing</searchLink><relatesTo>1,2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Liu%2C+Yi-Jia%22">Liu, Yi-Jia</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Gui-Hua%22">Li, Gui-Hua</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Cai%2C+Ge-Mei%22">Cai, Ge-Mei</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> caigemei@csu.edu.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22Dalton+Transactions%3A+An+International+Journal+of+Inorganic+Chemistry%22">Dalton Transactions: An International Journal of Inorganic Chemistry</searchLink>. 5/7/2023, Vol. 52 Issue 17, p5552-5562. 11p.
– Name: Subject
  Label: Subjects
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  Data: <searchLink fieldCode="DE" term="%22Phosphate+glass%22">Phosphate glass</searchLink><br /><searchLink fieldCode="DE" term="%22Phosphors%22">Phosphors</searchLink><br /><searchLink fieldCode="DE" term="%22Rietveld+refinement%22">Rietveld refinement</searchLink><br /><searchLink fieldCode="DE" term="%22Crystal+defects%22">Crystal defects</searchLink><br /><searchLink fieldCode="DE" term="%22Thermal+electrons%22">Thermal electrons</searchLink><br /><searchLink fieldCode="DE" term="%22Quantum+efficiency%22">Quantum efficiency</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: To enhance the working quality of WLEDs, considerable efforts have been made to upgrade the thermal quenching resistance of existing phosphors or design new anti-thermal quenching (ATQ) phosphors. Developing a new phosphate matrix material with special structural features has great importance for the fabrication of ATQ phosphors. By phase relationship and composition analysis, we have prepared a novel compound Ca3.6In3.6(PO4)6 (CIP). Coupling ab initio and Rietveld refinement techniques, the novel structure of CIP with partly vacant cationic positions was solved. Taking this unique compound as the host and using the inequivalent substitution of Dy3+ for Ca2+, a series of C1−xIP:Dy3+ rice-white emitting phosphors were successfully developed. When the temperature was raised to 423 K, the emission intensity of C1−xIP:xDy3+ (x = 0.01, 0.03, and 0.05) increased to 103.8%, 108.2%, and 104.5% of the original intensity at 298 K, respectively. Except for the strong bonding network and inherent cationic vacancy in the lattice, the ATQ property of the C1−xIP:Dy3+ phosphors is mainly attributed to the generation of interstitial oxygen from the substitution of unequal ions, which releases electrons with the thermal stimulus, causing anomalous emission. Finally, we have explored the quantum efficiency of C1−xIP:0.03Dy3+ phosphor and the working performance of PC-WLED prepared with C1−xIP:0.03Dy3+ phosphor and 365 nm chip. The research work sheds light on the relationship between lattice defects and thermal stability, and meanwhile offers a new strategy for the development of ATQ phosphors. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Dalton Transactions: An International Journal of Inorganic Chemistry is the property of Royal Society of Chemistry 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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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1039/d2dt03642h
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 11
        StartPage: 5552
    Subjects:
      – SubjectFull: Phosphate glass
        Type: general
      – SubjectFull: Phosphors
        Type: general
      – SubjectFull: Rietveld refinement
        Type: general
      – SubjectFull: Crystal defects
        Type: general
      – SubjectFull: Thermal electrons
        Type: general
      – SubjectFull: Quantum efficiency
        Type: general
    Titles:
      – TitleFull: Anti-thermal quenching phosphors based on the new phosphate host Ca3.6In3.6(PO4)6.
        Type: main
  BibRelationships:
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      – PersonEntity:
          Name:
            NameFull: Wang, Rong-Rong
      – PersonEntity:
          Name:
            NameFull: Zhang, Jing
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            NameFull: Liu, Yi-Jia
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            NameFull: Li, Gui-Hua
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            NameFull: Cai, Ge-Mei
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          Dates:
            – D: 07
              M: 05
              Text: 5/7/2023
              Type: published
              Y: 2023
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              Value: 14779226
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              Value: 52
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              Value: 17
          Titles:
            – TitleFull: Dalton Transactions: An International Journal of Inorganic Chemistry
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