Iris Publishers Material Science Open Access Journal

Abstract Possibilities of plasma chemical deposition of α-Si 1-x Ge x :H (x=0÷1) films undoped and doped with PH 3 or B 2 H 6 have been analyzed from the viewpoint of their application in p-i-n structures of solar cell. The optical properties are considered, and the amount of hydrogen contained in those films is determined. The film properties are found to strongly depend on the film composition and the hydrogenation level. The number of hydrogen atoms in the films is varied by changing the gas mixture composition, and IR absorption in α-Si:H and α-G e :H films is measured. The α-Si:H and а-Si 0,88 Ge 1,2 :H films were used to fabricate three-layer solar with an element area of 1,3 sm 2 and an efficiency (η) of 9.5 %. Read More About This Article:  https://irispublishers.com/mcms/fulltext/effect-of-infrared-radiation-on-the-hydrogen-in-thin-films-double-barriers-based-melt-silicone-germany.ID.000504.php Read More   Iris Publishers Google Scholar   Articles: htt...

The polarization potential (РР) is regarded as the main criterion of corrosion protection of metal structures in conducting media. However, the potential between the reference electrode and the metal of the protected structure is measured with a voltmeter and contains, in addition to the polarization component, the Ohmic drop of the voltage. But, only the polarization of the surface causes the effect of cathodic protection. Therefore, the Ohmic component should be removed from the measured potential difference for the precise control of the protected structure. To solve the problem of measuring PP is known methods of compensating, relaxation, auxiliary electrodes and calculations, which have disadvantages. Read More About This Article: https://irispublishers.com/mcms/fulltext/measuring-of-polarization-and-ohmic-potentials-for-the-diagnostics-of-corrosion-protection-of-the-metal-structures.ID.000503.php Read More Iris Publishers Google Scholar Articles: https://scholar.google.com/citat...

The non-stoichiometric tungsten oxide nanostructure, WO2.9 (W25O73, dark blue color) is an efficient electrocatalyst for hydrogen evolution in acidic water, which has shown promise as an alternative to platinum (Nature Communications 2015, 6, 8064(1-7)). Generally speaking, the oxygen vacancies or oxygen deficiencies can affect the electronic band structure and enhance the conductivity. Blue tungsten oxide-based materials, WO2.8 (W5O14) are used as promising anode materials for lithium-ion batteries (Adv. Funct. Mater. 2018, 28, 1707500). And sea urchin-like WO2.7 (W18O49, purple color) nanowire can be used as a substrate material to magnify the substrate-analyte molecule interaction, leading to significant SERS response, even comparable to noble metals without ‘hot spots’. The extremely high electrocatalytic activity and SERS response can probably be attributed to the presence of oxygen deficiencies, either intrinsic or on the surface (Nature Communications 2015, 6, 7800(1-7)). Read M...