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Wyszukujesz frazę "Khomyak, V." wg kryterium: Autor


Wyświetlanie 1-5 z 5
Tytuł:
XPS and Raman Characterizations of $Zn_{1-x}Cd_{x}O$ Films Grown at the Different Growth Conditions
Autorzy:
Shtepliuk, I.
Khyzhun, O.
Lashkarev, G.
Khomyak, V.
Lazorenko, V.
Powiązania:
https://bibliotekanauki.pl/articles/1403642.pdf
Data publikacji:
2012-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.55.Et
78.67.Bf
Opis:
X-ray photoelectron spectroscopy was employed to characterize the surface chemistry and electronic properties of the $Zn_{1-x}Cd_{x}O$ semiconductor systems obtained at the different growth conditions. The effect of the growth conditions on the core and valence band spectra as well as room-temperature photoluminescence of the $Zn_{1-x}Cd_{x}O$ films was investigated and discussed. Behavior of the X-ray photoelectron spectroscopy peaks indicated an increase of the cadmium and a depletion of the oxygen concentrations upon changing the Ar/$O_2$ gas ratio and dc power.
Źródło:
Acta Physica Polonica A; 2012, 122, 6; 1034-1038
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fabrication and Properties of the Photosensitive Anisotype $n-Cd_{x}Zn_{1-x}O$/p-CdTe Heterojunctions
Autorzy:
Khomyak, V.
Brus, V.
Ilashchuk, M.
Orletsky, I.
Shtepliuk, I.
Lashkarev, G.
Powiązania:
https://bibliotekanauki.pl/articles/1376075.pdf
Data publikacji:
2014-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
72.40.+w
73.40.Lq
81.15.Lm
Opis:
We have fabricated photosensitive anisotype $n-Cd_{x}Zn_{1-x}O$/p-CdTe heterojunctions by a deposition of $Cd_{0.5}Zn_{0.5}O$ film onto freshly-cleaved CdTe monocrystalline wafers using a radiofrequency magnetron reactive sputtering of a zinc-cadmium alloy target. Fundamental electrical properties of the heterojunctions were studied. Dominant mechanisms of a current transport were found. $n-Cd_{x}Zn_{1-x}O$/p-CdTe heterojunctions were photosensitive and were able to operate both in photovoltaic and photodiode modes.
Źródło:
Acta Physica Polonica A; 2014, 126, 5; 1163-1166
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effects of $Ar//O_2$ Gas Ratio on the Properties of the $Zn_{0.9}Cd_{0.1}O$ Films Prepared by DC Reactive Magnetron Sputtering
Autorzy:
Shtepliuk, I.
Lashkarev, G.
Khomyak, V.
Marianchuk, P.
Koreniuk, P.
Myroniuk, D.
Lazorenko, V.
Timofeeva, I.
Powiązania:
https://bibliotekanauki.pl/articles/1492665.pdf
Data publikacji:
2011-12
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.55.Et
78.67.Bf
Opis:
$Zn_{0.9}Cd_{0.1}O$ ternary alloys have been grown on the sapphire substrates by using the direct current (dc) magnetron sputtering. X-ray diffraction measurements showed that all samples were highly oriented films along the c-axis perpendicular to the substrate surface. X-ray diffraction confirmed that the crystal quality of $Zn_{0.9}Cd_{0.1}O$ films can be controlled by changing the gas ratio of $Ar//O_2$. The optical properties of these films have been investigated by means of the optical transmittance and the low-temperature photoluminescence spectra. It was found that the optical band gap of the deposited films can be tuned by growth parameters. The luminescence processes are considered in the terms of alloy fluctuation.
Źródło:
Acta Physica Polonica A; 2011, 120, 6A; A-061-A-065
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Enhancement of the Ultraviolet Luminescence Intensity from Cd-Doped ZnO Films Caused by Exciton Binding
Autorzy:
Shtepliuk, I.
Lashkarev, G.
Khyzhun, O.
Kowalski, B.
Reszka, A.
Khomyak, V.
Lazorenko, V.
Timofeeva, I.
Powiązania:
https://bibliotekanauki.pl/articles/1492932.pdf
Data publikacji:
2011-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
78.55.Et
78.67.Bf
81.05.Dz
81.07.Bc
Opis:
ZnO films doped with the cadmium (0.4-0.6%) were grown on crystalline sapphire $c-Al_2O_3$ substrates applying radiofrequency magnetron sputtering at the temperature of 400°C in $Ar-O_2$ atmosphere. The as-grown films were investigated in detail using X-ray diffraction, X-ray photoelectron spectroscopy, and cathodoluminescence spectra. The X-ray diffraction analysis revealed that the films possess a hexagonal wurtzite-type structure with the dominant crystallite orientation along the c axis. It was found that the small concentration of the cadmium significantly enhances the ultraviolet emission associated with excitonic transitions. We suggest that this enhancement effect mainly results from appearance of the cadmium isoelectronic traps, which may bind an exciton, thereby increasing the probability of radiation recombination. The effect of Cd isoelectronic impurity on structural and luminescent properties of ZnO films is discussed.
Źródło:
Acta Physica Polonica A; 2011, 120, 5; 914-917
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of High Energy Electron Irradiation on Structure and Optical Properties of ZnO Films
Autorzy:
Myroniuk, D.
Lashkarev, G.
Shtepliuk, I.
Lazorenko, V.
Maslyuk, V.
Timofeeva, I.
Romaniuk, A.
Strelchuk, V.
Kolomys, O.
Khomyak, V.
Powiązania:
https://bibliotekanauki.pl/articles/1399153.pdf
Data publikacji:
2013-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.80.-x
78.55.Et
71.55.Gs
Opis:
Zinc oxide films were grown on sapphire substrates by direct current magnetron sputtering and irradiated by electrons with energy 10 MeV and fluences $10^{16}$ and $2 \times 10^{16} cm^{-2}$. As-grown and irradiated samples were investigated by X-ray diffraction and photoluminescence spectroscopy. It was found that radiation causes the appearance of complex defects, reducing the size of coherent scattering regions and the increase of the defect PL band.
Źródło:
Acta Physica Polonica A; 2013, 124, 5; 891-894
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-5 z 5

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