Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102403
Title: Optical and electronic properties of undoped La2Be2O5 single crystals in the far ultraviolet energy range
Authors: Pustovarov, V. A.
Ogorodnikov, I. N.
Ospanbekov, E. A.
Issue Date: 2015
Publisher: Optical Society of American (OSA)
Citation: Pustovarov V. A. Optical and electronic properties of undoped La2Be2O5 single crystals in the far ultraviolet energy range / V. A. Pustovarov, I. N. Ogorodnikov, E. A. Ospanbekov. — DOI 10.1364/JOSAB.32.000241 // Journal of the Optical Society of America B: Optical Physics. — 2015. — Vol. 32. — Iss. 2. — P. 241-247.
Abstract: The optical and electronic properties of undoped La2Be2O5 single crystals were determined using low-temperature (T = 10 K) far ultraviolet (4.9-33 eV) synchrotron radiation spectroscopy, optical absorption spectroscopy (T = 80 and 320 K), and calculations for the dispersions of the optical functions. On the basis of the obtained data we determined the Urbach's formula parameters and the cut-off energy Ec = 5.49 eV at 80 K for the low-energy tail of the host absorption, the bandgap Eg = 6.78 eV at 10 K, the energy threshold for the creation of unrelaxed excitons Eex = 6.28 eV, and other electronic properties. © 2015 Optical Society of America.
Keywords: ABSORPTION SPECTROSCOPY
ELECTROMAGNETIC WAVE ABSORPTION
ELECTRONIC PROPERTIES
LIGHT ABSORPTION
SYNCHROTRON RADIATION
TEMPERATURE
ENERGY RANGES
ENERGY THRESHOLDS
FAR ULTRAVIOLET
HOST ABSORPTIONS
LOW TEMPERATURES
OPTICAL AND ELECTRONIC PROPERTIES
OPTICAL FUNCTION
SYNCHROTRON RADIATION SPECTROSCOPY
SINGLE CRYSTALS
URI: http://hdl.handle.net/10995/102403
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 84924082705
PURE ID: 365235
95f32161-7196-43fe-8ad7-45a5212a3cf9
ISSN: 7403224
DOI: 10.1364/JOSAB.32.000241
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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