Luminescence and Electronic Excitations in Li6Gd(BO3)(3):Ce3+ Crystals / Ogorodnikov I. N.,Sedunova I. N.,Isaenko L. I.,Zhurkov S. A. // PHYSICS OF THE SOLID STATE. - 2012. - V. 54, l. 3. - P. 485-492.

ISSN/EISSN:

1063-7834 / нет данных

Type:

Article

Abstract:

This paper reports on a study of the luminescence emitted by Li6Gd(BO3)(3) : Ce3+ crystals under selective photoexcitation to lower excited states of the host ion Gd3+ and impurity ion Ce3+ within the 100-500-K temperature interval, where the mechanisms of migration and relaxation of electronic excitation energy have been shown to undergo noticeable changes. The monotonic 10-15-fold increase in intensity of the luminescence band at 3.97 eV has been explained within a model describing two competing processes, namely, migration of electronic excitation energy over chains of Gd3+ ions and vibrational energy relaxation between the I-6(j) and P-6(j) levels. It has been shown that radiative transitions in Ce3+ ions from the lower excited state 5d(1) to F-2(5/2) and F-2(7/2) levels of the ground state produce two photoluminescence bands, at 2.08 and 2.38 eV (Ce1 center) and 2.88 and 3.13 eV (Ce2 center). Possible models of the Ce1 and Ce2 luminescence centers have been discussed.

Author keywords:

STIMULATED RECOMBINATION PROCESSES; SINGLE-CRYSTALS; ENERGY-TRANSFER; SPECTROSCOPIC PROPERTIES; CE3+; TEMPERATURE; PHOTOLUMINESCENCE; SCINTILLATOR; PERFORMANCE; ABSORPTION

DOI:

10.1134/S1063783412030225

Web of Science ID:

ISI:000302961800008

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAR
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	STIMULATED RECOMBINATION PROCESSES; SINGLE-CRYSTALS; ENERGY-TRANSFER; SPECTROSCOPIC PROPERTIES; CE3+; TEMPERATURE; PHOTOLUMINESCENCE; SCINTILLATOR; PERFORMANCE; ABSORPTION
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	ogo@dpt.ustu.ru
ResearcherID-Numbers	Ogorodnikov, Igor/B-4162-2011 Isaenko, Ludmila/A-5272-2014 Zhurkov, Sergey/A-5291-2014 Isaenko, Ludmila/H-7620-2013
ORCID-Numbers	Ogorodnikov, Igor/0000-0002-4700-2340
Funding-Acknowledgement	Interdisciplinary Project {[}34]; Ural Federal University
Funding-Text	This study was supported in part by the Interdisciplinary Project no. 34 and Program for supporting research of postgraduate students and young scientists of the Ural Federal University.
Number-of-Cited-References	33
Usage-Count-Since-2013	7
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	928DS