Materials Literature
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This study presents a novel investigation on thin film Cu2ZnSnS4(CZTS) solar cells in the superstrate structure in which all the semiconductor layers were prepared under non-vacuum conditions. The solar cell structure (SLG)/FTO (Fluorine doped Tin-Oxide)/Ag/CdS/CZTS/Al had the SnO2:F (window), CdS (buffer) and CZTS (a…
The formation of thin silicon carbide layers as a result of solid-phase processes is related to the evolution of nanoscale porosity and chemical reactions on pore surfaces. Numerical experiments, which simulate blistering under the action of Xe+ ions in the metal-insulator (Mo/Si) bilayer make it possible to establish…
Using the equipment of the Russian-German beamline of the synchrotron radiation at the BESSY II electron storage ring, satellite spectra accompanying the C1 s core lines in the cases of single-walled carbon nanotubes and highly ordered pyrolytic graphite have been measured with a high energy resolution. The Auger spec…
The energy landscape of the polyalanine Ace-(Ala) 10 -NMe, one of the standard models for the study of α -helix folding, is investigated using conformational space annealing (CSA) and the all-atom CHARMM force field (param22). The native α -helical conformation is obtained for all 100 CSA runs. Gathering all conformat…
C 28 H 26 N 6 O 7 Zn, monoclinic, P2 1 /c (no. 14), a = 7.9282(7) Å, b = 31.309(3) Å, c = 11.060(1) Å, β = 95.958(1)°, V = 2730.5 Å 3 , Z = 4,R gt (F) = 0.0352, wR ref (F 2 ) = 0.0937, T = 296 K.
AC voltage has been applied on oil impregnated paper with superimposed transients of repetition frequency ranging from 1 kHz to 10 kHz. The time-to-breakdown has been recorded. Then the “accelerated life test analysis” (ALTA) approach is applied to model the lifetime vs. repetition frequency relationship with inverse…
The valence-band splitting in a single crystal of CuO has been detected by using the methods of optical spectroscopy. The size of this splitting at the Γ-point of the Brillouin Zone has been determined. Interpretation of this phenomenon taking into account symmetry of the crystal field is given.
NiO coated aluminum borate whiskers were prepared by a sol-gel process and an ultrasonic dispersion technique. The preparation process and characterizations of NiO coated aluminum borate whiskers were investigated. The results show that during the heating process of the xerogel coated aluminum borate whiskers, one end…
The nature of different Au species supported on hexagonal mesoporous silica has been studied by infrared spectroscopy of adsorbed CO. Experiments revealed existence of the following states of supported gold: neutral metal particles Au°, ions Au+and a number of partly charged states Auδ+with different effective charge.…
Diamond Schottky barrier diodes (SBDs) are fabricated on thin polycrystalline diamond films deposited by the microwave plasma-enhanced chemical vapor deposition (CVD) process. The diodes are photoirradiated with white light of different intensities while the changes in their electrical response to DC and time-varying…
Polymer-inorganic composite materials, which offer enormous scientific and technological promise in areas ranging from microelectronics to nanobiotechnology, is an exciting area of research. In this paper, a boehmite sol, which used as the precursor of nano-alunima particles, was firstly synthesized by the hydrotherma…
Hydrogenated amorphous silicon germanium thin films (a-SiGe:H) were prepared via plasma enhanced chemical vapor deposition (PECVD). By adjusting the flow rate of GeH4, a-SiGe:H thin films with narrow bandgap (Eg) were fabricated with high Ge incorporation. It was found that although narrow Eg was obtained, high Ge inc…
Optical and nonlinear optical properties of grown KDP single crystals with incorporated aluminum oxyhydroxide nanoparticles were studied. The presence of embedded nanoparticles leads to the change of nonlinear optical response of the composite material relatively to KDP one.
A facile one-pot route for the synthesis of monodisperse Ag nanocrystals with a narrow size distribution is described. Uniform Ag nanoparticles with the size of around 12 nm were obtained by reduction of AgNO3 in the presence of oleylamine and polymer polyvinylpyrrolidone (PVP) at low temperature. It is found that tem…
The design and synthesis of particulate materials for new catalyst systems with novel properties remain a big challenge today. Here an attempt has been made to synthesize particulate materials for several heterogeneous catalytic systems, which contain examples from our research projects in this area. The particulate c…
Low capacitance and highly reliable Cu dual-damascene (DD) interconnects have been developed with self-organized “seamless low-k SiOCH stacks” (SEALS) structure. A carbon-rich sub-nano porous SiOCH (k=2.5) was directly stacked on an oxygen-rich porous SiOCH (k=2.7) in the SEALS structure, without a hard-mask (HM) and…
It is the Kraft-MMT(K-MMT) which was composited with various percentage of MMT(Montmorillonite) that were prepared to be stirred in deionized water with different time to reinforce the properties of Kraft Paper. The breakdown and relative dielectric characteristics of K-MMT were investigated. According to correspondin…
Intracellular localization of serine, cysteine and aspartate proteases, as well as their protein inhibitors, in bombyx grain in the postdiapause period of embryogenesis has been studied. Proteolytic activity of aspartate and cysteine proteases was found in lysosomal, mitochondrial, and nuclear fractions of grains. Ser…
Abstract Seit Beginn des Jahres steigen Anzahl und Wert der Deals pro Quartal. Asiaten sind immer häufiger als Käufer oder Verkäufer bei grenzüberschreitenden Transaktionen vertreten.
Synchrotron-based X-ray scattering (SR-XRS) techniques offer the ability to probe nano- and atomic-scale structures that dictate the properties of advanced technological and environmental materials. Important materials studied at the Stanford Synchrotron Radiation Lightsource (SSRL) include organic and inorganic thin…