XPS spectra of vanadium-doped disulfides CuCrS<Subscript>2</Subscript>

The charged state of atoms in layered cation-substituted disulfides CuCr_1?x V _x S₂ (x = 0?0.4) was studied using X-ray photoelectron spectroscopy. The study was performed with polycrystalline powder and ceramic samples of chromium-copper disulfides. CuCr_1?x V _x S₂ samples were shown to comprise differently charged atoms of chromium, copper and vanadium, the charged state of which varies with the concentration of vanadium cations (x).     

Flexible Polymer–Organic Solar Cells Based on P3HT:PCBM Bulk Heterojunction Active Layer Constructed under Environmental Conditions

In this study, some crucial parameters were determined of flexible polymer–organic solar cells prepared from an active layer blend of poly(3-hexylthiophene) (P3HT) and the fullerene derivative [6,6]-phenyl-C₆₁-butyric acid methyl ester (PCBM) mixed in 1:1 mass ratio and deposited from chlorobenzene solution by spin-coating on poly(ethylene terephthalate) (PET)/ITO substrates. Additionally, the positive effect of an electron transport layer (ETL) prepared from zinc oxide nanoparticles (ZnO np) on flexible photovoltaic elements’ performance and stability was investigated. Test devices with above normal architecture and silver back electrodes deposed by magnetron sputtering were constructed under environmental conditions. They were characterized by current-voltage (I–V) measurements, quantum efficiency, impedance spectroscopy, surface morphology, and time–degradation experiments. The control over morphology of active layer thin film was achieved by post-deposition thermal treatment at temperatures of 110–120 °C, which led to optimization of device morphology and electrical parameters. The impedance spectroscopy results of flexible photovoltaic elements were fitted using two R||CPE circuits in series. Polymer–organic solar cells prepared on plastic substrates showed comparable current–voltage characteristics and structural properties but need further device stability improvement according to traditionally constructed cells on glass substrates.     

Detecting Interlaminar Separations and Glue-Line Defects in Five- and Seven-Layer Honeycomb Parts and Structural Elements Made of PCMs via an Acoustic Method

Research aimed at the determination of the best method for the nondestructive control over the detection of defects in five- and seven-layer objects with a honeycomb filler has been carried out. It has been shown that control using an impedance method makes it possible to detect defects of a honeycomb filler with a cell size of 8 mm, as well as defects between the honeycomb filler and monolithic covers made of carbon-fiber-reinforced plastic. The diameter of the minimum consistently detectable defect is 16 mm.     

Photoelectron spectra of powder and single crystalline chromium-copper disulfides

2p _3/2,1/2 Photoelectron spectra of single crystalline specimens of chromium-copper disulfides CuCrS₂ and CuCr_0.85V_0.15S₂ are studied. It is shown that the spectra of single crystalline specimens substantially differ from the corresponding spectra of chromium-copper disulfides in the powder state.     

Embritllement of Cr18Ni10Ti Steel Irradiated with Neutrons in a Helium Atmosphere at High Temperature

Russian Physics Journal -     

Modification of polymeric matrix of polyester fiber-glass materials with powder polyamide and epoxy resin

The possibility of improving the quality of polyester fiber-glass products prepared by environmentally safe low-pressure procedures by modification of the polymeric matrix with moderate amounts of polycaproamide powder in combination with small amounts of epoxy resin was studied.     

Features of Cu−S chemical bond in BaCu2S2

Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences. Translated from Zhurnal Strukturnoi Khimii, Vol. 33, No. 1, pp. 68–71, Janaury–February, 1992.     

X-ray and quantum chemical study of the electronic structure of glycine and its metal complexes

OK_α spectra of glycine and some transition metal complexes with glycine ligands were obtained. The electronic structure of the glycine zwitterion is calculated by a quantum chemical method, and a theoretical X-ray spectrum of the glycine molecule is constructed. The nature of the metal-ligand bond in the compounds is discussed on the basis of experimental spectra and theoretical calculations. Institute of Inorganic Chemistry, Siberian Branch, Russian Academy of Sciences. Moscow State Academy of Light Industry, Novosibirsk Branch. Moscow State Academy of Light Industry. Novosibirsk State University. Translated fromZhurnal Strukturnoi Khimii, Vol. 34, No. 4, pp. 112–116, July–August, 1994. Translated by L. Smolina     

Method of stabilization of Sh-Enzymes: stabilization of formate dehydrogenase and alcohol dehydrogenase by polycations

Dehydrogenases capable of oxidation can be stabilized by complexation with poly-electrolytes. These polymers prevent the oxidation of SH groups by the formation of a highly charged microenvironment.