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Your search keyword '"Zhuravlev, K. S."' showing total 662 results
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662 results on '"Zhuravlev, K. S."'

207. Influence of electric field on the photoluminescence of silicon nanocrystals

Author

Vandyshev, E. N., Zhuravlev, K. S., Gilinsky, A. M., Lisitsyn, V. M., Skorupa, W., Vandyshev, E. N., Zhuravlev, K. S., Gilinsky, A. M., Lisitsyn, V. M., and Skorupa, W.

Abstract

We studied the effect of electric field generated on photoluminescence (PL) of silicon nanocrystals embedded in SiO2 films. We show that the application of electric field generated by means of surface acoustic waves (SAW) results in an increase of the PL intensity of nanocrystal photoluminescence by as much as 10% at a field amplitude of 12 kV/cm at temperatures below 15 K. At temperatures above 20 K the PL intensity decreases as the electric field is applied. The results are discussed within the frame of the self-trapped exciton model.

Published
2005

212. Enhancement of the photoluminescence of silicon nanocrystals under the influence of electric field

Author

Vandyshev, E. N., Zhuravlev, K. S., Gilinsky, A. M., Skorupa, W., Vandyshev, E. N., Zhuravlev, K. S., Gilinsky, A. M., and Skorupa, W.

Abstract

The effect of electric field generated by the application of surface acoustic waves on photoluminescence (PL) of silicon nanocrystals embedded in SiO2 films is studied. It is shown that the application of electric field results in an increase in the intensity of nanocrystal PL, the increase amounting to 10% at a field amplitude of 6 kV cm(-1). The results are discussed within the frame of the self-trapped exciton model.

Published
2004

233. Investigation of Multilayer Silicon Structures with Buried Iron Silicide Nanocrystallites: Growth, Structure, and Properties

Author

Galkin, N. G., primary, Goroshko, D. L., additional, Polyarnyi, V. O., additional, Chusovitin, E. A., additional, Korobtsov, V. V., additional, Balashev, V. V., additional, Khang, Y., additional, Dozsa, L., additional, Gutakovsky, A. K., additional, Latyshev, A. V., additional, Shamirzaev, T. S., additional, and Zhuravlev, K. S., additional

Published
2008
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249. Surface polariton spectroscopy of AlN films grown by ammonia MBE on (0001) Al2O3 substrate.

Author

Novikova, N. N., Vinogradov, E. A., Yakovlev, V. A., Malin, T. V., Mansurov, V. G., and Zhuravlev, K. S.

Subjects
SERS spectroscopy, ALUMINUM nitride films, MOLECULAR beam epitaxy, NITRIDATION, POLARITONS, SAPPHIRES
Abstract

Surface polariton (SP) spectra of nitridated sapphire and rather thick (1 µm) AlN films on sapphire have been measured using attenuated total reflection technique. The high sensitivity of SP allows to see the sapphire spectra change after nitridation of sapphire and even variations parameters of the nitridation procedure. SP dispersion curves depend on degree of conversion of an initial sapphire surface layer into crystalline AlN during the nitridation procedure. The TO frequencies of formed AlN films are higher than the frequency reported for the AlN single crystal indicating the increase of the lattice constant. (© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) [ABSTRACT FROM AUTHOR]

Published
2015
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250. Sub-THz nonresonant detection in AlGaN/GaN heterojunction FETs.

Author

Golenkov, A. G., Zhuravlev, K. S., Gumenjuk-Sichevska, J. V., Lysiuk, I. O., and Sizov, F. F.

Subjects
*HETEROJUNCTION field effect transistors, *ALUMINUM compounds, *SAPPHIRES, *SUBSTRATES (Materials science), *SCIENTIFIC observation, *TEMPERATURE effect
Abstract

Un-cooled AlGaN/GaN-based heterojunction field-effect transistors (HFET) designed on sapphire (0001) substrates were considered as 140 GHz direct detection detectors without any specially attached antennas. The noise equivalent power (NEP) of these detectors was ~ 10-10 W/Hz1/2 in the observed radiation frequency range at ambient temperatures. It has been shown that the ultimate value for the AlGaN/GaN HFET detectors (in 0.25-µm technology) can reach NEPopt ≈ 6·10-12 W/Hz1/2, and it is 3-fold lower than that for Si MOSFET (in 0.35-µm technology). [ABSTRACT FROM AUTHOR]

Published
2015

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