Radiation effects and defects in lithium borate crystals / Ogorodnikov Igor N.,Poryvay Nikita E.,Pustovarov Vladimir A. // . - 2010. - V. 15, l. .

ISSN/EISSN:

1757-8981 / нет данных

Type:

Proceedings Paper

Abstract:

The paper presents the results of a study of the formation and decay of lattice defects in wide band-gap optical crystals of LiB3O5 (LBO), Li2B4O7 (LTB) and Li6Gd(BO3)(3) (LGBO) with a sublattice of mobile lithium cations. By means of thermoluminescence techniques, and luminescent and absorption optical spectroscopy with a nanosecond time resolution under excitation with an electron beam, it was revealed that the optical absorption in these crystals in the visible and ultraviolet spectral ranges is produced by optical hole-transitions from the local defect level to the valence band states. The valence band density of the states determines mainly the optical absorption spectral profile, and the relaxation kinetics is rated by the interdefect non-radiative tunnel recombination between the trapped-hole center and the Li-0 trapped-electron centers. At 290 K, the Li-0 centers are subject to thermally stimulated migration. Based on experimental results, the overall picture of thermally stimulated recombination processes with the participation of shallow traps was established for these crystals.

Author keywords:

LUMINESCENCE VUV SPECTROSCOPY; TRANSIENT OPTICAL-ABSORPTION; SINGLE-CRYSTALS; LIB3O5; TETRABORATE

DOI:

10.1088/1757-899X/15/1/012016

Web of Science ID:

ISI:000315348600016

Соавторы в МНС:

Другие поля

Поле	Значение
Booktitle	11TH EUROPHYSICAL CONFERENCE ON DEFECTS IN INSULATING MATERIALS (EURODIM 2010)
Series	IOP Conference Series-Materials Science and Engineering
Note	11th Europhysical Conference on Defects in Insulating Materials (EURODIM), Res Inst Solid State Phys \& Optics, Pecs, HUNGARY, JUL 12-16, 2010
Organization	Univ Pecs, Inst Phys
Publisher	IOP PUBLISHING LTD
Address	DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND
Language	English
Article-Number	012016
Keywords-Plus	LUMINESCENCE VUV SPECTROSCOPY; TRANSIENT OPTICAL-ABSORPTION; SINGLE-CRYSTALS; LIB3O5; TETRABORATE
Research-Areas	Materials Science
Web-of-Science-Categories	Materials Science, Multidisciplinary
Author-Email	igor.ogorodnikov@bk.ru
ResearcherID-Numbers	Ogorodnikov, Igor/B-4162-2011
ORCID-Numbers	Ogorodnikov, Igor/0000-0002-4700-2340
Number-of-Cited-References	15
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	7
Doc-Delivery-Number	BDW55