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Luminescence and vacuum ultraviolet excitation spectroscopy of samarium doped SrB4O7

Tuomela, Anu ; Zhang, Meng ; Huttula, Marko ; Sakirzanovas, Simas ; Kareiva, Aivaras ; Popov, Anatoli I. ; Kozlova, Anna P. ; Aravindh, S. Assa ; Cao, Wei and Pankratov, Vladimir LU (2020) In Journal of Alloys and Compounds 826.
Abstract

Sm2+ and Sm3+ co-doped SrB4O7 could be utilized in several high-level optical devices and fundamental knowledge about the optical behavior of these materials benefits the development of luminescent applications. Herein, we report luminescence and its vacuum ultraviolet (VUV) excitation spectra in samarium doped SrB4O7. Both, Sm2+ and Sm3+ luminescence centers have been examined and distinguished in the emission and the excitation spectra investigated under synchrotron radiation. The contribution of either Sm2+ or Sm3+ emission lines into the emission spectra heavily depended on the excitation energy, and strong f-f transitions... (More)

Sm2+ and Sm3+ co-doped SrB4O7 could be utilized in several high-level optical devices and fundamental knowledge about the optical behavior of these materials benefits the development of luminescent applications. Herein, we report luminescence and its vacuum ultraviolet (VUV) excitation spectra in samarium doped SrB4O7. Both, Sm2+ and Sm3+ luminescence centers have been examined and distinguished in the emission and the excitation spectra investigated under synchrotron radiation. The contribution of either Sm2+ or Sm3+ emission lines into the emission spectra heavily depended on the excitation energy, and strong f-f transitions of both Sm2+ and Sm3+ were detected. At 10 K, a broad intrinsic luminescence in the UV range was detected and attributed to the radiative transition of either bound or self-trapped exciton in SrB4O7. The optical behavior, including e.g. inter-configurational f-d transitions of Sm(n+) were elucidated with first-principles calculations. Partial density of states well represents the changes of the electronic states that are related to the samarium doping, which in turn explains the emerging features in excitation spectra. In summary, the obtained results clarify the excitation and emission behavior of samarium doped SrB4O7.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
First-principles calculations, Luminescence, Sm, SrBO, Synchrotron radiation, VUV spectroscopy
in
Journal of Alloys and Compounds
volume
826
article number
154205
publisher
Elsevier
external identifiers
  • scopus:85079162117
ISSN
0925-8388
DOI
10.1016/j.jallcom.2020.154205
language
English
LU publication?
yes
id
5b624245-d80c-4e6c-ae72-a6d42c0add98
date added to LUP
2020-02-20 10:13:07
date last changed
2022-04-18 20:36:54
@article{5b624245-d80c-4e6c-ae72-a6d42c0add98,
  abstract     = {{<p>Sm<sup>2+</sup> and Sm<sup>3+</sup> co-doped SrB<sub>4</sub>O<sub>7</sub> could be utilized in several high-level optical devices and fundamental knowledge about the optical behavior of these materials benefits the development of luminescent applications. Herein, we report luminescence and its vacuum ultraviolet (VUV) excitation spectra in samarium doped SrB<sub>4</sub>O<sub>7</sub>. Both, Sm<sup>2+</sup> and Sm<sup>3+</sup> luminescence centers have been examined and distinguished in the emission and the excitation spectra investigated under synchrotron radiation. The contribution of either Sm<sup>2+</sup> or Sm<sup>3+</sup> emission lines into the emission spectra heavily depended on the excitation energy, and strong f-f transitions of both Sm<sup>2+</sup> and Sm<sup>3+</sup> were detected. At 10 K, a broad intrinsic luminescence in the UV range was detected and attributed to the radiative transition of either bound or self-trapped exciton in SrB<sub>4</sub>O<sub>7</sub>. The optical behavior, including e.g. inter-configurational f-d transitions of Sm<sup>(n+)</sup> were elucidated with first-principles calculations. Partial density of states well represents the changes of the electronic states that are related to the samarium doping, which in turn explains the emerging features in excitation spectra. In summary, the obtained results clarify the excitation and emission behavior of samarium doped SrB<sub>4</sub>O<sub>7</sub>.</p>}},
  author       = {{Tuomela, Anu and Zhang, Meng and Huttula, Marko and Sakirzanovas, Simas and Kareiva, Aivaras and Popov, Anatoli I. and Kozlova, Anna P. and Aravindh, S. Assa and Cao, Wei and Pankratov, Vladimir}},
  issn         = {{0925-8388}},
  keywords     = {{First-principles calculations; Luminescence; Sm; SrBO; Synchrotron radiation; VUV spectroscopy}},
  language     = {{eng}},
  month        = {{06}},
  publisher    = {{Elsevier}},
  series       = {{Journal of Alloys and Compounds}},
  title        = {{Luminescence and vacuum ultraviolet excitation spectroscopy of samarium doped SrB<sub>4</sub>O<sub>7</sub>}},
  url          = {{http://dx.doi.org/10.1016/j.jallcom.2020.154205}},
  doi          = {{10.1016/j.jallcom.2020.154205}},
  volume       = {{826}},
  year         = {{2020}},
}