Laser site-selective spectroscopy of Eu3+ ions doped Y4Al2O9

Marcin Piotr Kaczkan , Sebastian Turczyński , Dorota A. Pawlak , Magdalena Wencka , Michał Malinowski

Abstract

Eu3+ doped Y4Al2O9 (YAM) crystals were prepared by the micro-pulling down method. Optical-absorption and laser-selective-excitation techniques along with the luminescence decays have been used to reveal that Eu3+ ions in YAM occupy three distinct sites, which were characterized and discussed. The Stark energy levels of Eu3+ at three different sites in YAM were assigned from selectively excited emission spectra at 10 K. The intensity ratio of forced electric dipole (5D0 → 7F2) and magnetic dipole (5D0 → 7F1) transitions was discussed in order to obtain information about the degree of asymmetry of the luminescent centers. These results were confirmed by the luminescence lifetime measurements. The temperature dependent photo-luminescence spectra indicated that there is no energy transfer between different sites in the 10–300 K range.
Author Marcin Piotr Kaczkan IMiO
Marcin Piotr Kaczkan,,
- The Institute of Microelectronics and Optoelectronics
, Sebastian Turczyński
Sebastian Turczyński,,
-
, Dorota A. Pawlak
Dorota A. Pawlak,,
-
, Magdalena Wencka
Magdalena Wencka,,
-
, Michał Malinowski IMiO
Michał Malinowski,,
- The Institute of Microelectronics and Optoelectronics
Journal seriesOptical Materials, ISSN 0925-3467
Issue year2016
Vol58
Pages412-417
Publication size in sheets0.5
Keywords in EnglishEu3+ ion; Photoluminescence; Red phosphor; Site-selective spectroscopy
DOIDOI:10.1016/j.optmat.2016.06.023
URL http://www.sciencedirect.com/science/article/pii/S0925346716303172
Languageen angielski
Score (nominal)35
ScoreMinisterial score = 30.0, 27-03-2017, ArticleFromJournal
Ministerial score (2013-2016) = 35.0, 27-03-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 2.238 (2) - 2016=2.209 (5)
Citation count*6 (2018-02-18)
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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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