Luminescence and vacuum ultraviolet excitation spectroscopy of samarium doped SrB4O7
(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
- 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
- organization
- publishing date
- 2020-06-15
- 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}}, }