Spectrally resolved thermally stimulated luminescence of irradiated anion-defective alumina single crystals / Kortov V.,Lushchik A.,Nagirnyi V.,Ananchenko D.,Romet I. // JOURNAL OF LUMINESCENCE. - 2017. - V. 186, l. . - P. 189-193.

ISSN/EISSN:

0022-2313 / 1872-7883

Type:

Article

Abstract:

Thermally stimulated luminescence (TSL) spectra in the 313-580 K temperature range have been studied in anion-defective alumina crystals (named in literature as Al2O3:C) exposed to different irradiation doses. The TSL curve features two peaks with the maxima at T-m1 =437 K and Tm-2=565 K. The TSL spectruth of the first peak contains the emission of F centers and the R line of Cr3+ impurity ions. The absence of the emission of F+ centers indicates that electron traps are responsible for the first dosimetric TSL peak. The TSL spectrum of the second peak features emission bands of F, F+ centers, R line as well as a wide band centered at 550 nm and associated with the formation of aggregate centers (F-2 and F-2(2+)) under irradiation. Possible excitation mechanisms of the TSL emission bands that involve both electron and hole traps related to anion vacancies and impurities are discussed. (C) 2017 Elsevier B.V. All rights reserved.

Author keywords:

Alumina; Luminescence; Emission spectra; Aggregate defects ALPHA-AL2O3 CRYSTALS; OPTICAL-PROPERTIES; TL; THERMOLUMINESCENCE; CENTERS; AL2O3-C; TRAPS; OSL; VACANCIES; KINETICS

DOI:

10.1016/j.jlumin.2017.02.023

Web of Science ID:

ISI:000399858100030

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	JUN
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1872-7883
Keywords-Plus	ALPHA-AL2O3 CRYSTALS; OPTICAL-PROPERTIES; TL; THERMOLUMINESCENCE; CENTERS; AL2O3-C; TRAPS; OSL; VACANCIES; KINETICS
Research-Areas	Optics
Web-of-Science-Categories	Optics
Author-Email	vskortov@mail.ru
ResearcherID-Numbers	Lushchik, Aleksandr/F-9130-2013
Funding-Acknowledgement	Ministry of Education and Science of Russian Federation {[}3.1016.2014/K]; Estonian Research Council - Institutonal Research Funding {[}IUT02-26]
Funding-Text	This work was supported by the Ministry of Education and Science of Russian Federation (Project no 3.1016.2014/K) and the Estonian Research Council - Institutonal Research Funding IUT02-26.
Number-of-Cited-References	36
Usage-Count-Last-180-days	3
Usage-Count-Since-2013	4
Journal-ISO	J. Lumines.
Doc-Delivery-Number	ES9EE