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National Repository of Grey Literature 12 records found  previous11 - 12  jump to record: Search took 0.00 seconds. 
Influence of nucleation and methane concentration on buckypapers exposed to hot filament chemical vapor deposition process
 Varga, Marián ; Kotlár, M. ; Vretenár, V. ; Ižák, Tibor ; Šoltýs, J. ; Kromka, Alexander ; Veselý, M.
In this article we investigate the nanocomposite material formation, particularly the deposition of nanocrystalline diamond film on buckypaper (BP) substrate. The buckypapers were prepared from single-wall carbon nanotubes (SWCNT) mixture produced by laser ablation method. We have investigated the influence of the nucleation and methane concentration on buckypapers exposed to the hot filament chemical vapor deposition process.
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Photothermal and photocurrent spectroscopy of wide band gap nanocrystalline semiconductors
 Remeš, Zdeněk ; Babchenko, Oleg ; Neykova, Neda ; Varga, Marián
Optical spectroscopy belongs to the most important methods applied to characterize thin films. Photothermal deflection spectroscopy (PDS) as well as the dual beam photocurrent (DBP) spectroscopy in near ultraviolet (200-400 nm), visible (400-700 nm) and near infrared regions (700-2000 nm) are particularly useful for study of the wide band gap semiconductors deposited as thin layers on glass substrates. In our laboratory we focus on optically transparent thin films such as nanocrystalline diamond (NCD) or ZnO nanostructures with size too small to be visualized in optical microscope and the optical absorption edge in the ultraviolet region. In this contribution we summarize how to evaluate the optical absorption edge and the defects in the band gap of these wide band gap nanocrystalline semiconductors.
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National Repository of Grey Literature : 12 records found   previous11 - 12  jump to record:
See also: similar author names
1 Varga, M.
6 Varga, Marek
8 Varga, Martin
2 Varga, Matúš
5 Varga, Michal
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