Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/111143
Title: Specific Features of Lluminescence of Oxygen-Deficient Centres in Nanostructured Silicon Dioxide
Authors: Kortov, V. S.
Zatsepin, A. F.
Pustovarov, V. A.
Chudinov, A. A.
Biryukov, D. Yu.
Issue Date: 2007
Publisher: Elsevier BV
Citation: Specific Features of Lluminescence of Oxygen-Deficient Centres in Nanostructured Silicon Dioxide / V. S. Kortov, A. F. Zatsepin, V. A. Pustovarov et al. // Radiation Measurements. — 2007. — Vol. 42. — Iss. 4-5. — P. 891-893.
Abstract: Specific features of radiative and non-radiative relaxations of oxygen-deficient centres (ODC's) in nanostructured silicon dioxide were studied using optically stimulated electron emission and time-resolved photoluminescence. It was found that modifications of oxygen-deficient centres in the form of surface analogues can exist in nanostructured samples prepared by thermal decomposition of polysilazane in air. Photoluminescence of these centres was efficiently excited in the optical absorption bands of surface Es′-centres and silicon clusters {triple bond, long} SiSiSi {triple bond, long} and could be associated with the intercentre energy transfer during their nonradiative relaxation. Specific features of thermally induced changes in the luminescence characteristics of the defects due to transformation of the structure of silica samples from amorphous to partially crystalline modification were established from analysis of the spectral composition and the decay kinetics of the photoluminescence. © 2007.
Keywords: NANOSTRUCTURED SILICON DIOXIDE
OXYGEN-DEFICIENT CENTRES
SILICON CLUSTERS
ABSORPTION SPECTRA
ENERGY TRANSFER
KINETICS
NANOSTRUCTURED MATERIALS
PHOTOLUMINESCENCE
PYROLYSIS
NANOSTRUCTURED SILICON DIOXIDE
NONRADIATIVE RELAXATION
OXYGEN-DEFICIENT CENTERS
POLYSILAZANE
SILICON CLUSTERS
SILICA
URI: http://hdl.handle.net/10995/111143
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 34548243723
ISSN: 1350-4487
metadata.dc.description.sponsorship: This study was supported by RFBR (Projects Nos. 04-02-96073, 05-02-16448 and 05-02-16530) and the RF Ministry of Education (Project RNP.2.1.1.2948).
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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