Abstract: Chalcogenide glasses or amorphous semiconductors are the attractive materials for optoelectronics investigations. Surface morphology and crystallization kinetics parameters are play an important role to define their possible uses. In such materials a metal containing multicomponent alloy offers fractured surface morphology. Therefore, this work deals the fractured surface morphologies and crystallization kinetics of Se93−xZn2Te 5Inx (0 ≤ x ≤ 10) multicomponent chalcogenide alloys. These materials have been exhibited the glass transition

Abstract: Titanium dioxide is one of the most basic materials in our daily life, which has emerged as an excellent photocatalyst material for environmental purification and photovoltaic material working in dye-sensitized solar cell. We present two types of TiO2 architectures which are constructed by plates and sheets, respectively, and both subunits are dominant with {001} facets. The photocatalytic degradation of methyl orange in UV/supported-TiO2 systems was investigated and the mechanism was discussed. The experimental results show that photocatalytic degradation rate is favoured by larger surface area. The sheet structure shows superior photocatalytic activity than plate structure. Moreover, the materials with sheet structure were also used to investigate the photovoltaic property. The power conversion efficiency is 7.57%, indicating the materials with this unique structure are excellent in photocatalytic and photovoltaic applications.

Abstract: By exerting sandblasting onto brass (Cu0.7Zn0.3) substrates, we show that the increased sandblasting can gradually suppress ZnO nanowire formation during the thermal oxidation of the Cu–Zn alloy. Detailed surface composition analysis by EDS and depth-resolved XPS shows that both ZnO and CuO form initially on the surface upon oxidation but the CuO phase decreases from the surface to the subsurface region. It is shown that sandblasting leads to more even chemical composition of the brass substrate, which results in more uniform formation of the CuO phase across the surface. The subsequent reduction of the less stable CuO phase by Zn in the coalesced oxide layer results in uniformly accumulated pure Cu in the subsurface region, which suppresses ZnO nanowire formation by blocking the supply of Zn atoms from the brass substrate.