Self-trapped excitons in LiB3O5 and Li2B4O7 lithium borates: Time-resolved low-temperature luminescence VUV spectroscopy / Ogorodnikov IN,Pustovarov VA,Kruzhalov AV,Isaenko LI,Kirm M,Zimmerer G // PHYSICS OF THE SOLID STATE. - 2000. - V. 42, l. 3. - P. 464-472.

ISSN/EISSN:

1063-7834 / нет данных

Type:

Article

Abstract:

Results are reported of a coordinated investigation of the dynamics of electronic excitations in LiB3O5 and Li2B4O7 crystals by low-temperature luminescence VUV spectroscopy performed with subnanosecond resolution under synchrotron photoexcitation. Data on the photoluminescence (PL) decay kinetics, time-resolved PL and PL excitation spectra, and reflectance spectra obtained at 295 and 9.6 K are reported for the first time; the PL of the borates in the 3.5-eV region caused by radiative annihilation of self-trapped excitons (STE) has been established to have an intrinsic nature; the sigma and pi STE luminescence bands originating from singlet and triplet radiative transitions have been isolated; the shift of the STE sigma band relative to the pi band has been interpreted; the LBO recombination luminescence band has been isolated; and the creation and decay channels of relaxed and unrelaxed excitons in lithium borates are discussed. (C) 2000 MAIK ``Nauka/Interperiodica{''}.

Author keywords:

ELECTRONIC-STRUCTURE; OPTICAL-PROPERTIES; CRYSTALS

DOI:

10.1134/1.1131232

Web of Science ID:

ISI:000085348600014

Соавторы в МНС:

Другие поля

Поле	Значение
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	ELECTRONIC-STRUCTURE; OPTICAL-PROPERTIES; CRYSTALS
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	ogo@dpt.ustu.ru
ResearcherID-Numbers	Ogorodnikov, Igor/B-4162-2011 Kirm, Marco/M-1533-2016 Isaenko, Ludmila/A-5272-2014 Isaenko, Ludmila/H-7620-2013
ORCID-Numbers	Ogorodnikov, Igor/0000-0002-4700-2340 Kirm, Marco/0000-0002-1833-6894
Number-of-Cited-References	32
Usage-Count-Since-2013	3
Journal-ISO	Phys. Solid State
Doc-Delivery-Number	284TM