Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111141
Title: Short-Living Defects and Recombination Processes in Li 6Gd(BO3)3 Crystals
Authors: Ogorodnikov, I. N.
Poryvay, N. E.
Pustovarov, V. A.
Tolmachev, A. V.
Yavetskiy, R. P.
Yakovlev, V. Yu.
Issue Date: 2010
Publisher: Elsevier BV
Citation: Short-Living Defects and Recombination Processes in Li 6Gd(BO3)3 Crystals / I. N. Ogorodnikov, N. E. Poryvay, V. A. Pustovarov et al. // Radiation Measurements. — 2010. — Vol. 45. — Iss. 3-6. — P. 336-339.
Abstract: Results of a study of transient optical absorption (TOA) and luminescence of lithium-gadolinium orthoborate Li6Gd(BO3)3 (LGBO) in the visible and ultraviolet spectral regions are presented. As revealed by absorption optical spectroscopy with nanosecond time resolution, the LGBO TOA derives from optical transitions in hole centers, with the optical density relaxation kinetics being mediated by interdefect tunneling recombination involving these centers and neutral lithium atoms acting as electronic Li0 centers. At 290 K, the Li0 centers are involved in thermally stimulated migration, which is not accompanied by carrier transfer to the conduction or valence band. The slow TOA decay kinetics components, with characteristic times ranging from a few milliseconds to seconds, have been assigned to diffusion-limited annihilation of lithium interstitials with vacancies. The mechanisms responsible for the creation and relaxation of short-living Frenkel defect pairs in the LGBO cation sublattice have been analyzed. © 2009 Elsevier Ltd. All rights reserved.
Keywords: LATTICE DEFECTS
LI6GD(BO3)3
LITHIUM BORATE CRYSTALS
OPTICAL SPECTROSCOPY
TIME-RESOLUTION
CARRIER TRANSFER
DECAY KINETICS
DIFFUSION LIMITED
FRENKEL DEFECTS
HOLE CENTERS
INTERSTITIALS
LATTICE DEFECTS
LITHIUM BORATES
NEUTRAL LITHIUM
OPTICAL DENSITIES
OPTICAL SPECTROSCOPY
RECOMBINATION PROCESS
SUB-LATTICES
TIME-RESOLUTION
TRANSIENT OPTICAL ABSORPTIONS
TUNNELING RECOMBINATION
VISIBLE AND ULTRAVIOLET
ABSORPTION
ABSORPTION SPECTROSCOPY
ATOMIC SPECTROSCOPY
CRYSTALS
DEFECTS
GADOLINIUM
ULTRAVIOLET SPECTROSCOPY
LITHIUM
URI: http://hdl.handle.net/10995/111141
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 77955309531
ISSN: 1350-4487
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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