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Bi2O3-B2O3-CaF2-EuF3 glass–ceramics for lighting applications.

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Title: Bi2O3-B2O3-CaF2-EuF3 glass–ceramics for lighting applications.
Authors: Jamalaiah, B. C.1 (AUTHOR) bcjphysics@gmail.com, Madhu, N.2 (AUTHOR), Annar, Shaik3 (AUTHOR), Rao, K. Venkata4 (AUTHOR), Pavani, K.5 (AUTHOR)
Source: Journal of Materials Science: Materials in Electronics. Mar2023, Vol. 34 Issue 9, p1-11. 11p.
Subjects: Glass-ceramics, Solid-state lasers, Phosphate glass, Luminescence, Photoluminescence, Transmission electron microscopy, Heat treatment, Branching ratios, Fourier transforms
Abstract: The Bi2O3-B2O3-CaF2-EuF3 (BiBCEu) glass and glass–ceramics were prepared by controlled heat treatment method for orange-red laser sources and characterized through X-ray diffraction, Fourier transform infrared, Raman, transmission electron microscopy, photoluminescence excitation, emission and luminescence decay studies. Up on 396 nm excitation, the BiBCEu glass–ceramics containing Bi3B5O12 and CaF2 nanocrystallites exhibit an enhanced orange-red luminescence through Eu3+:5D0 → 7F2 (616 nm) transition. The radiative parameters such as radiative emission probability rate (AR), luminescence branching ratio (βR) and radiative decay time (τR) were determined using the intensities of Eu3+: 5D0 → 7FJ (J = 1, 2, 4) emission transitions following the Judd–Ofelt theory. The chromaticity coordinates of BiBCEu glass–ceramic heat treated at 575 °C for 10 h are situated in the orange-red region of the CIE diagram. The BiBCEu glass–ceramic synthesized at 575 °C for 10 h has an excellent proficiency for solid state orange-red laser sources. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Materials Science: Materials in Electronics 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: <searchLink fieldCode="JN" term="%22Journal+of+Materials+Science%3A+Materials+in+Electronics%22">Journal of Materials Science: Materials in Electronics</searchLink>. Mar2023, Vol. 34 Issue 9, p1-11. 11p.
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  Data: <searchLink fieldCode="DE" term="%22Glass-ceramics%22">Glass-ceramics</searchLink><br /><searchLink fieldCode="DE" term="%22Solid-state+lasers%22">Solid-state lasers</searchLink><br /><searchLink fieldCode="DE" term="%22Phosphate+glass%22">Phosphate glass</searchLink><br /><searchLink fieldCode="DE" term="%22Luminescence%22">Luminescence</searchLink><br /><searchLink fieldCode="DE" term="%22Photoluminescence%22">Photoluminescence</searchLink><br /><searchLink fieldCode="DE" term="%22Transmission+electron+microscopy%22">Transmission electron microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Heat+treatment%22">Heat treatment</searchLink><br /><searchLink fieldCode="DE" term="%22Branching+ratios%22">Branching ratios</searchLink><br /><searchLink fieldCode="DE" term="%22Fourier+transforms%22">Fourier transforms</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: The Bi2O3-B2O3-CaF2-EuF3 (BiBCEu) glass and glass–ceramics were prepared by controlled heat treatment method for orange-red laser sources and characterized through X-ray diffraction, Fourier transform infrared, Raman, transmission electron microscopy, photoluminescence excitation, emission and luminescence decay studies. Up on 396 nm excitation, the BiBCEu glass–ceramics containing Bi3B5O12 and CaF2 nanocrystallites exhibit an enhanced orange-red luminescence through Eu3+:5D0 → 7F2 (616 nm) transition. The radiative parameters such as radiative emission probability rate (AR), luminescence branching ratio (βR) and radiative decay time (τR) were determined using the intensities of Eu3+: 5D0 → 7FJ (J = 1, 2, 4) emission transitions following the Judd–Ofelt theory. The chromaticity coordinates of BiBCEu glass–ceramic heat treated at 575 °C for 10 h are situated in the orange-red region of the CIE diagram. The BiBCEu glass–ceramic synthesized at 575 °C for 10 h has an excellent proficiency for solid state orange-red laser sources. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Journal of Materials Science: Materials in Electronics 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/s10854-023-10218-y
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      – Code: eng
        Text: English
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      – SubjectFull: Glass-ceramics
        Type: general
      – SubjectFull: Solid-state lasers
        Type: general
      – SubjectFull: Phosphate glass
        Type: general
      – SubjectFull: Luminescence
        Type: general
      – SubjectFull: Photoluminescence
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      – SubjectFull: Transmission electron microscopy
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      – SubjectFull: Heat treatment
        Type: general
      – SubjectFull: Branching ratios
        Type: general
      – SubjectFull: Fourier transforms
        Type: general
    Titles:
      – TitleFull: Bi2O3-B2O3-CaF2-EuF3 glass–ceramics for lighting applications.
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            NameFull: Jamalaiah, B. C.
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            NameFull: Madhu, N.
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              M: 03
              Text: Mar2023
              Type: published
              Y: 2023
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              Value: 34
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            – TitleFull: Journal of Materials Science: Materials in Electronics
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