Time evolution of luminescence of Sr2SiO4:Eu2+

Justyna Barzowska , Karol Szczodrowski , M. Grinberg , S. Mahlik , Krzysztof Paweł Anders , Ryszard Piramidowicz , Y. Zorenko

Abstract

In this contribution, the photoluminescence, time-resolved luminescence and luminescence kinetics of α'-Sr2SiO4:Eu2+ are studied. The luminescence of Sr2SiO4:Eu2+ consists of two broad bands, peaked at 490 nm (blue-green) and 570 nm (yellow-orange), which originate from two luminescence centers, related to Eu2+ in ten-coordinated SI and nine-coordinated SII sites, respectively. Based on spectroscopic data the energetic structure of Sr2SiO4:Eu2+ has been developed, which includes the bands edges, energies of Eu2+ in the SI and SII sites and energies of strontium and oxygen vacancies. To investigate the long-lasting luminescence phenomenon in Sr2SiO4:Eu2+ the temperature influence on the time evolution of luminescence was analyzed. It has been found that the long-lasting luminescence is related to the Eu2+ in SII site. The shallowest traps responsible for emission decaying within a few seconds are tentatively attributed to the [Eu3+(SII)-${\mathrm{V}}_{\mathrm{O}}^{\bullet }$] centers. The depth of traps responsible for the long-lasting luminescence observed at room temperature has been estimated as equal 0.73 eV.
Author Justyna Barzowska - [University of Gdańsk (UG)]
Justyna Barzowska,,
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- Uniwersytet Gdański
, Karol Szczodrowski - [University of Gdańsk (UG)]
Karol Szczodrowski,,
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- Uniwersytet Gdański
, M. Grinberg - [Uniwersytet Gdanski]
M. Grinberg,,
-
-
, S. Mahlik - [University of Gdańsk (UG)]
S. Mahlik,,
-
- Uniwersytet Gdański
, Krzysztof Paweł Anders (FEIT / MO)
Krzysztof Paweł Anders,,
- The Institute of Microelectronics and Optoelectronics
, Ryszard Piramidowicz (FEIT / MO)
Ryszard Piramidowicz,,
- The Institute of Microelectronics and Optoelectronics
, Y. Zorenko - [Uniwersytet Kazimierza Wielkiego w Bydgoszczy]
Y. Zorenko,,
-
- Uniwersytet Kazimierza Wielkiego w Bydgoszczy
Journal seriesJournal of Physics-Condensed Matter, ISSN 0953-8984, [1361-648X], (A 30 pkt)
Issue year2013
Vol25
No42
Pages425501, 1-8
ASJC Classification3104 Condensed Matter Physics; 2500 General Materials Science
DOIDOI:10.1088/0953-8984/25/42/425501
URL http://iopscience.iop.org/0953-8984/25/42/425501/
Languageen angielski
Score (nominal)30
ScoreMinisterial score = 30.0, 04-09-2019, ArticleFromJournal
Ministerial score (2013-2016) = 30.0, 04-09-2019, ArticleFromJournal
Publication indicators WoS Citations = 2; Scopus Citations = 3; Scopus SNIP (Source Normalised Impact per Paper): 2013 = 1.022; WoS Impact Factor: 2013 = 2.223 (2) - 2013=2.335 (5)
Citation count*4 (2019-09-05)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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