Transient optical absorption and luminescence of lithium triborate LiB3O5 / Ogorodnikov IN,Yakovlev VY,Isaenko LI // PHYSICS OF THE SOLID STATE. - 2003. - V. 45, l. 5. - P. 845-853.

ISSN/EISSN:

1063-7834 / нет данных

Type:

Article

Abstract:

The transient optical absorption and luminescence of LiB3O5 (LBO) nonlinear crystals in the visible and UV spectral ranges were studied. Measurements made using absorption optical spectroscopy with ns-scale time resolution revealed that the transient optical absorption (TOA) in LBO originates from optical transitions in hole centers and that the kinetics of optical density relaxation are rate-limited by interdefect nonradiative tunneling recombination involving these hole centers and the Li-0 electronic centers, which represent neutral lithium atoms. At 290 K, the Li-0 centers can migrate in a thermally stimulated, one-dimensional manner, a process which is not accompanied by carrier delocalization into the conduction or valence band. It is shown that the pulsed LBO cathodoluminescence kinetics is rate-limited by a recombination process involving two competing valence-band-mediated hole centers and shallow B2+ electronic centers. The radiative recombination accounts for the characteristic sigma-polarized LBO luminescence in the 4.0-eV region. (C) 2003 MAIK ``Nauka/Interperiodica{''}.

Author keywords:

PIEZOELECTRIC PROPERTIES; NONLINEAR CRYSTALS; LATTICE-DEFECTS; POLARONS; GLASSES

DOI:

10.1134/1.1575321

Web of Science ID:

ISI:000182730700006

Соавторы в МНС:

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Другие поля

Поле	Значение
Publisher	AMER INST PHYSICS
Address	CIRCULATION \& FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA
Language	English
Keywords-Plus	PIEZOELECTRIC PROPERTIES; NONLINEAR CRYSTALS; LATTICE-DEFECTS; POLARONS; GLASSES
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
ResearcherID-Numbers	Isaenko, Ludmila/A-5272-2014 Ogorodnikov, Igor/B-4162-2011 Isaenko, Ludmila/H-7620-2013
ORCID-Numbers	Ogorodnikov, Igor/0000-0002-4700-2340
Number-of-Cited-References	38
Usage-Count-Since-2013	6
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	676AX