Afterglow in bulk AlN single crystals under beta-irradiation / Vokhmintsev A. S.,Weinstein I. A.,Spiridonov D. M. // JOURNAL OF LUMINESCENCE. - 2012. - V. 132, l. 8. - P. 2109-2113.

ISSN/EISSN:

0022-2313 / 1872-7883

Type:

Review

Abstract:

Regularities of afterglow at room temperature and of thermoluminescence at further heating up to 673 K have been studied in bulk aluminum nitride single crystals. It has been established that after exposure to beta-irradiation luminescence decay at RT may be described by superposition of two exponential components: fast (59 s) and slow (606 s) ones, caused by defects of the anion crystal sublattice O-N- and V-N-centers, respectively. The afterglow spectrum is shown to be characterized by the 3.43 eV band with FWHM=0.61 eV that dominates also in the thermoluminescence under study. From analysis of the TL curves in terms of the general order formalism it has been concluded that variation of the activation energy observed within the 0.46-0.85 eV range with increasing storage of the samples from 5 min to 3 days may be caused by energy distribution of traps on the basis of oxygen-related centers. For the first time the compensation effect has been found, and phenomenologically interpreted for the TL processes of the AlN single crystals. Isokinetic temperature has been estimated within the framework of empiric and non-empiric relations. (c) 2012 Elsevier B.V. All rights reserved.

Author keywords:

Aluminum nitride; Oxygen-related centers; Thermoluminescence; Fading; Compensation effect; Isokinetic temperature ALUMINUM NITRIDE CRYSTALS; THERMOLUMINESCENCE; LUMINESCENCE; CENTERS; RECOMBINATION; GROWTH; DEFECT

DOI:

10.1016/j.jlumin.2012.03.066

Web of Science ID:

ISI:000305729900047

Соавторы в МНС:

Другие поля

Поле	Значение
Month	AUG
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
EISSN	1872-7883
Keywords-Plus	ALUMINUM NITRIDE CRYSTALS; THERMOLUMINESCENCE; LUMINESCENCE; CENTERS; RECOMBINATION; GROWTH; DEFECT
Research-Areas	Optics
Web-of-Science-Categories	Optics
Author-Email	a.s.vokhmintsev@ustu.ru i.a.weinstein@ustu.ru
ResearcherID-Numbers	Weinstein, Ilya/K-8178-2012
ORCID-Numbers	Weinstein, Ilya/0000-0002-5573-7128
Funding-Acknowledgement	Federal Program ``Scientific and Scientific-Pedagogical Staff of Innovational Russia{''}
Funding-Text	This work was fulfilled in terms of a State contract under the Federal Program ``Scientific and Scientific-Pedagogical Staff of Innovational Russia{''} 2009-2013.
Number-of-Cited-References	28
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	28
Journal-ISO	J. Lumines.
Doc-Delivery-Number	964XL