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Article
Open AccessOrdered Arrays of Ultrafine Au Nanoprisms by Means of Nanosphere Lithography and Ion Hammering Effect
The search for new nanomaterials with precisely customized optical and geometric characteristics is highly suitable for potential applications in nanophotonics and optoelectronics. In this work, ordered arrays...
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Article
Open AccessFormation of a periodic structure on the surface of InP crystal during irradiation with bismuth ions
This work is devoted to the study of the formation of periodic relief on the InP surface during ion sputtering by bismuth ions with an energy of 30 keV and an angle of incidence of 45° respect to normal incide...
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Article
Short period p-type AlN/AlGaN superlattices for deep UV light emitters.
The Mg doped AlN/AlxGa1-xN (0.03 ≤ x ≤ 0.05) short period superlattices (SPSLs) were grown by gas source molecular beam epitaxy on (0001) sapphire substrates. The average AlN mole fraction is ∼ 0.7 and the hole c...
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Article
Open AccessElectronic and optical competence of TiO2/BiVO4 nanocomposites in the photocatalytic processes
Nanocomposites with different ratios of titanium dioxide and bismuth vanadate [TiO2]/[BiVO4] give rise to compatible electronic band structure alignment at their interfaces to ensure enhanced photoactivated charg...
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Article
Study of Secondary Ion Emission in the “Thermal Spike” Mode
The sources of heavy cluster ions (Au, Bi) used in modern mass spectrometers suggest that the emission of secondary ions is predominantly performed in the thermal spike mode, unlike the previous generation of ...
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Article
Optimization of Ge substrates for ZnO deposition and their application for CO2 detection
The present work focuses on the deposition of ZnO thin films on crystalline and porous Germanium substrates for hazardous gas detection. The porous Ge substrates were obtained by means of surface exfoliation b...
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Article
Negative annealing in silicon after the implantation of high-energy sodium ions
The implantation of sodium ions with an energy of 300 keV is carried out into high-resistivity p-Si. The annealing of defects at T ann = 350–450°C and related activation of atoms (...
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Article
Structural Properties of Ultrasonically Sprayed Al-Doped ZnO (AZO) Thin Films: Effect of ZnO Buffer Layer on AZO
Transparent aluminium-doped ZnO (AZO)-conducting oxide films were deposited on a glass substrate, using an ultrasonic spray pyrolysis (USP) system at 475°C. We investigated the effects of the Al/Zn atomic rati...
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Article
Sputtering of the target surface by Cs+ ions: Steady-state concentration of implanted cesium and emission of CsM+ cluster ions
Experimental data for the variation of the work function on the Si and GaAs semiconductor surfaces irradiated by cesium ions are presented. The formation mechanism of CsM+ cluster ions (M is the analyte) is consi...
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Article
Effect of milling time and heat treatment on the composition of CuIn0.75Ga0.25Se2 nanoparticle precursors and films
Preparation of pure phase CuIn0.75Ga0.25Se2 nanoparticle powder by ball milling technique has been confirmed for the milling time of more than 45 min at 1200 rpm. Formation of shear bands responsible for breakdow...
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Article
Effect of Hydrogen Dilution on Structure and Electronic Properties of Ge:H and GeYSi1-Y Films Deposited by Low Frequency Plasma
We report on a systematic study of growth rate, surface morphology, hydrogen and oxygen incorporation, optical and electrical properties in Ge:H and GeYSi1-Y:H, Y> 0.85 films, deposited in a capacitive reactor by...
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Article
Mechano-chemical Synthesis, Deposition and Structural Characterization of CIGS
CuInGaSe2 (CIGS) is a prominent thin-film photovoltaic material. However, commonly used physical vapour deposition and sputtering techniques used to fabricate CIGS thin-film photovoltaic (PV) devices are complex ...
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Article
Refined “statistical” model of secondary ion formation
A model of formation of secondary ion during ion-beam sputtering of a target is considered. The model is based on the so-called “statistical model” of formation of secondary ions at a certain critical distance...
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Article
Low Resistance Ohmic Contacts Formation and Mechanism of Current Transport Through p-GaN and p-AlGaN
We report the influence of surface treatment, annealing temperature and metal bilayer thickness on the specific contact resistance (ρc) of Au/Ni ohmic contacts to p-GaN and p-AlGaN. Ohmic contact on p-GaN...
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Article
Depth-profile analysis of nanostructures by SIMS: Depth resolution function
A new model of the depth-resolution function for secondary-ion mass spectrometry, which takes into account recoil implantation, ion mixing, and surface roughness formation under ion irradiation, is considered....
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Article
Silicon-germanium films deposited by low-frequency plasma-enhanced chemical vapor deposition: Effect of H2 and Ar dilution
We have studied structure and electrical properties of Si1−YGeY:H films deposited by low-frequency plasma-enhanced chemical vapor deposition over the entire composition range from Y = 0 to Y = 1. The deposition r...
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Article
Redistribution of ytterbium and oxygen in annealing of silicon layers amorphized by implantation
The redistribution of ytterbium and oxygen was studied in silicon layers that were implanted with 1-MeV Yb+ ions at a dose of 1×1014 cm−2, which exceeds the amorphization threshold, and 135-keV O+ ions at a dose ...
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Article
Highly conductive and transparent In-doped zinc oxide thin films deposited by chemical spray using Zn(C5H7O2)2
Highly conductive and transparent indium-doped zinc oxide, ZnO, thin films were deposited on sodocalcic glass substrates by chemical spray, using zinc acetylacetonate, Zn(C5H7O2)2, and doped with indium chloride....
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Article
Gas source molecular beam epitaxy of high quality AlGaN on Si and sapphire
We report the results of epitaxial growth experiments on AlxGa1−xN (0≤ x ≤ 1) on Si(111) and sapphire substrates aimed at understanding the origin and elimination of cracking. We describe growth procedures result...
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Article
Conductive and transparent ZnO:Al thin films obtained by chemical spray
Electrical, structural, morphological and optical characteristics of ZnO:Al thin films obtained by chemical spray are presented in this paper. The dependence of the resistivity on the substrate temperature and...
