2009 WILEY-VCH Verlag Gmb Considerable research has been carried out on photonic crystals since the concept was introduced in 1987. However, fabrication of high-quality 3D photonic crystals still remains a challenge. Among a wide range of proposed techniques, creation of large-area, defect-free 3D polymeric templates through multibeam interference lithography, direct laser writing, or direct in...

The photodehydrogenation of ethanol is a sustainable and potentially cost-effective strategy to produce hydrogen acetaldehyde from renewable resources. optimization this process requires the use highly active, stable selective photocatalytic materials based on abundant elements proper adjustment reaction conditions, including temperature. In work, Cu2O-TiO2 type-II heterojunctions with differen...

Metal and metal oxides are widely used in industry, and to optimize their performance their surfaces are commonly functionalized by the formation of thin films. Self-assembled monolayers (SAMs) are deposited on metals or metal oxides either from solution or by gas deposition. The gas deposition enables the preparation of SAMs under very well controlled conditions in ultrahigh vacuum (UHV). Thio...

Resistive Switching In article number 2101905, Hyung Koun Cho and co-workers solve the trade-off issue between photo-charge transport stability originating from use of insulating protection layers. The electrochemical forming process suggested for TiO2 layer on photocathodes draws inspiration typical resistive switching behaviors in resistive-type memory with metal/insulator/metal (MIM) structu...

Electron transport in metal conductors with ~5-30 nm width is dominated by surface scattering. In situ transport measurements as a function of surface chemistry demonstrate that the primary parameter determining the surface scattering specularity is the localized surface density of states at the Fermi level N(Ef). In particular, the measured sheet resistance of epitaxial Cu(001) layers with thi...

Abstract: Perovskite solar cells have become an attractive subject in the solar energydevice area. During ten years of development, the energy conversion efficiency has beenimproved from 2.2% to more than 22%, and it still has a very good potential for furtherenhancement. In this paper, a numerical model of the perovskite solar cell with thestructure of glass/ FTO/ TiO2/...

Metal oxide semiconductor material has great potential to act as window layer in p–n heterojunction solar cell thin film owing low production cost and significant properties photovoltaic mechanism. In this work, n-TiO2/ZnO bilayer was effectively constructed by means of sol-gel spin coating technique an effort diminish the electron-hole recombination rate from single-layered film. Annealing tim...

In this study, a g-C3N4-Cu2O-TiO2 photocatalyst with novel three-dimensional ordered macroporous (3DOM) structure was successfully prepared using sacrificial template strategy and photodeposition method. The influence of the special porous cross pore channels on photocatalytic properties as-prepared sample studied in detail. Compared original (TiO2 3 wt% Pt), exhibited higher specific surface a...