Zobrazeno 1 - 10
of 78
pro vyhledávání: '"Kostadinka Gesheva"'
Autor:
Mariya Aleksandrova, Tatyana Ivanova, Velichka Strijkova, Tsvetozar Tsanev, Ajaya Kumar Singh, Jai Singh, Kostadinka Gesheva
Publikováno v:
Crystals, Vol 11, Iss 2, p 137 (2021)
Two layer system from sputtered indium tin oxide (ITO) and gallium doped zinc oxide (Ga:ZnO, GZO) were studied for transparency in the visible electromagnetic range, reflectivity in the near infrared range, conductivity and valent band for a solar ce
Externí odkaz:
https://doaj.org/article/9abc1182bd8a4a268a59838c27026ba4
Autor:
Frank Hamelmann, Sascha Koch, Kostadinka Gesheva, Mariya Aleksandrova, Daniela Karashanova, Tatyana Ivanova
Publikováno v:
Advanced Materials Letters. 11:1-7
Autor:
Ivalina Avramova, Albena Paskaleva, Kostadinka Gesheva, Petyr Tzvetkov, P. Terziyska, Daniela Kovacheva, Dencho Spassov, Tatyana Ivanova, Vladimir Mehandzhiev, Blagoy Blagoev
In this work, the feasibility of atomic layer deposition (ALD) to prepare tran sition metal (Ni-, Co- or Fe-) doped ZnO thin films have been studied. The effects of dopant on the structure, morphology and optical properties of films have been investi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1c74abb4e50348fefcf1899c13f0c1b
Autor:
Tsvetozar Tsanev, Tatyana Ivanova, Mariya Aleksandrova, Velichka Strijkova, Jai Govind Singh, Ajaya Kumar Singh, Kostadinka Gesheva
Publikováno v:
Crystals
Volume 11
Issue 2
Crystals, Vol 11, Iss 137, p 137 (2021)
Volume 11
Issue 2
Crystals, Vol 11, Iss 137, p 137 (2021)
Two layer system from sputtered indium tin oxide (ITO) and gallium doped zinc oxide (Ga:ZnO, GZO) were studied for transparency in the visible electromagnetic range, reflectivity in the near infrared range, conductivity and valent band for a solar ce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f9254cc34bdcc65497dc7bc89e597ed
Autor:
Mariya Aleksandrova, Frank Hamelmann, Velichka Strijkova, Tatyana Ivanova, Kostadinka Gesheva
Publikováno v:
Coatings, Vol 10, Iss 650, p 650 (2020)
Coatings
Volume 10
Issue 7
Coatings
Volume 10
Issue 7
Thin films of ZnO:Ga2O3 (ZGO) were deposited by radio frequency (RF) sputtering at voltages of 0.5, 0.9 and 1.1 kV. The films were studied with respect to their suitability in flexible piezoelectric nanogenerators. The analysis of the spectroscopic a
Autor:
Tsvetozar Tsanev, Kostadinka Gesheva, Tatyana Ivanova, Mariya Aleksandrova, Jai Singh, Ajaya Kumar Singh, Velichka Strijkova
Publikováno v:
2nd Coatings and Interfaces Web Conference (CIWC-2 2020).
Bi-layer coatings from sputtered indium tin oxide (ITO) and gallium doped zinc oxide (Ga:ZnO) were investigated for transparency in the visible range of the electromagnetic spectrum, optical rejection ability in the near infrared spectrum and conduct
Autor:
P. Tzvetkov, V. Mehandzhiev, Ivalina Avramova, Blagoy Blagoev, P. Terziyska, Kostadinka Gesheva, Albena Paskaleva, Daniela Kovacheva, Tatyana Ivanova
Ni-, Co- and Fe-doped ZnO films were grown by atomic layer deposition on Si and glass substrates. The structures prepared were studied and characterized by XRD, XPS, ellipsometry and FTIR. The crystalline ZnO structure showed a strong dependence on t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::56a44c9b56e2cbb55cc1a4f57178156a
Publikováno v:
Physics Procedia. 46:149-158
The present study is related to preparation and investigation of mixed W-V-O films, deposited on conductive glass substrates by atmospheric pressure chemical vapor deposition. The presence of lower-temperature precursor V(CO) 6 lead to faster growing
Publikováno v:
Physics Procedia. 46:127-136
Thin films of transition metals oxides are studied and comparison is made for two types of mixed precursors, first containing only hexacarbonyls, and second containing tungsten hexacarbonyl and vanadyl acetylacetonate (Vanadium (III) acetylacetonate)
Autor:
Miguel A Arvizu, Todor E. Vlakhov, Miroslav Abrashev, Yordan G. Marinov, Stefan Ivanov Boyadjiev, Tatiana Ivanova, Kostadinka Gesheva, Georgij Bodurov, G. Popkirov, Gunnar A. Niklasson, Imre Miklós Szilágyi, Mihail Iliev, P Terzijska, Gyula Jágerszki
Thin metal oxide films were investigated by a series of characterization techniques including impedance spectroscopy, spectroscopic ellipsometry, Raman spectroscopy, and Atomic Force Microscopy. Thin film deposition by reactive DC magnetron sputterin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42ad222d512276239824d2cfb9ba17b7
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-307582
http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-307582