Inorganic materials with hollow and multilayer structures have attracted many interests because of their special applications. In this paper we reported a low-cost synthetic route for hollow cuprous oxide octahedra with more than one shell. Various characterizations identified the as-obtained powder as pure, uniform, and monodispersed CU2O octahedr...
Copper oxide thin films as solar selective absorbers were conveniently prepared by one-step chemical conversion method. X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-vis-NIR spectra and Fourier transform infrared (FTIR) spectra were employed to characterize the composition, structure and optical properties of thin films. The resul...
Several populations of Cu spherical nanoparticles grown in a silicate glass at different temperatures with respect to the glass transition temperature were studied using high-resolution, low-frequency Raman scattering and optical absorption. The analysis of the spectra shows that the annealing of the doped glass at temperatures close to T-g leads t...
We report the preparation of Cu2O microparticles with different shapes, by simple hydrolyzation and reduction of copper acetate with glucose in a mixture of water-ethanol solvent. The effect of the synthesis conditions on the shape of the Cu2O microparticles and their catalytic properties in the Rochow reaction were investigated. The samples were c...
Mesoporous Cu2O (MP-Cu2O) microspheres were prepared via a facile template-free hydrothermal synthesis in the open system, in which copper acetate was used as the copper precursor and glucose as a reducing agent. The synthesis conditions and catalytic property of MP-Cu2O for dimethyldichlorosilane synthesis via the Rochow reaction were investigated...
The approach of combining two mismatched materials to form an amorphous alloy was used to synthesise ternary oxides of CuO and SnO2. These materials were analysed across a range of compositions, and the electronic structure was modelled using density functional theory. In contrast to the gradual reduction in optical band gap, the films show a sharp...
In this study, we achieved bidirectional threshold switching (TS) for selector applications in a Ag-Cu2O-based programmable-metallization-cell device by engineering the stack wherein Ag was intentionally incorporated in the oxide (Cu2O) layer by a simple approach comprising co-sputtering and subsequent optimized annealing. The distribution of the A...
The bottom-up approach using self-assembled materials/processes is thought to be a promising solution for next-generation device fabrication, but it is often found to be not feasible for use in real device fabrication. Here, we report a feasible and versatile way to fabricate high-density, nanoscale memory devices by direct bottom-up filling of mem...
Large-grained Cu2O photocathodes in a superstrate configuration on a F-doped SnO2 (FTO) coated glass substrate are synthesized via two-step electrodeposition. Only submicrometer sized grains were obtained during single-step electrodeposition in the potential window (-0.31 to -0.7 V vs Ag/AgCl) of stable Cu2O formation. We observe reductive decompos...
Hall measurement of an electrodeposited Cu2O film is rendered difficult as the bilayer structure of semiconductor on top of a conductive substrate obviates the measurement. Here, we propose the use of a patterned Au on glass substrate in line/space configuration for the Hall measurement of electrodeposited Cu2O. A continuous, (111) oriented Cu2O fi...
