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Showing 1 to 20 of 40 for “"Cu2O"”.
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Fabrication of nanorod TiO2/CU2O heterostructure thin film
… the photon absorbance spectrum of Copper Oxide (Cu2O) were coupled with their conveniently aligned interface to form a TiO2 /Cu2O heterojunction. However, it was reported that, the combination of planar n-type TiO2/p-type Cu2O was having low efficiency in solar cell application due to the limited …
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Elektrochemická detekce purinových bází pomocí tlustovrstvých Cu2O elektrod
… tlustovrstvých elektrod. Zaměřuje se na přípravu Cu2O pracovních elektrod metodou sítotisku a spray - coatingu na korundovém substrátu. V předkládané práci jsou obě metody přípravy elektrod popsány spolu se základními elektrochemickými metodami. Připravené Cu2O elektrody byly využity k detekci …
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Bose-Einstein condensation of excitons in uniaxially stressed Cu2O
Excitons in Cu20 have been demonstrated to be a nearly ideal gas of bosons, providing a unique system for studying Bose-Einstein statistics and Bose-Einstein Condensation of an ideal gas in the laboratory. In this study, I have applied uniaxial stress to optimize the conditions for a Bose-Einstein …
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Fabrication of Cu2O based homostructure thin film using electrodeposition method
Copper oxide (Cu2O) is one of inorganic materials used in photovoltaic (PV) technology. It was reported that Cu2O that acts as the p-n junction semiconductor material was preferable in extensive studies for solar cell application. However, the heterojunction interface between p-type Cu2O to other …
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Cu2O thin films for p-type metal oxide thin film transistors
… large-area electronics. Cuprous oxide (Cu2O) has previously been proposed as a suitable active layer for p-type metal oxide TFTs. The two most significant challenges for achieving good quality Cu2O TFTs are to overcome the low field-effect mobility and an unacceptably high off-state …
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Fabrication and optimization of N-Cu2O thin film using electrodeposition method for homojunction solar cell
Cuprous oxide (Cu2O) is a promising semiconductor that has been getting attention as the alternative material for solar cell application. It is abundant, low cost and non-toxic to the environment. A homojunction Cu2O is said to provide high conversion efficiency for solar cell. However, as Cu2O is …
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Copper Oxide Nano Photocatalyst for Wastewater Purification using Visible Light
… cubic, octahedral and rhombic dodecahedral Cu2O nano crystals with a size of 300-600 nm were synthesized using a simple hydrothermal method. The rhombic dodecahedral Cu2O nano crystals are highly active when driven by low-power white LEDs as a light source. In comparison with other reported …
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Comparative study of nanorods and nanoflowers TiO2 thin film for heterostructure application
… nanorods and nanoflowers TiO2/p-type Cu2O thin film where the modification of the heterostructure between these two materials is believed to enhancethe conversion efficiencyin solar cell application.The nanorods and nanoflowers structure areexpected to improve the solar cell …
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Novel Approaches to Photoactive Nanostructured Materials for Efficient Solar Cells
… e chimici per la sintesi di film sottili di Cu2O, per applicazioni nel fotovoltaico. Poichè l'efficienza delle celle solari, a base di Cu2O, non hanno , ancora superato il 6%, parte di questo lavoro è stata dedicata al miglioramento delle proprietà fisiche del materiale per mezzo di doping.
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CORROSION PROTECTION OF COPPER IN OILY MEDIA: MICROSCOPIC MECHANISMS
… layer. TTAH adsorption is found to take place on Cu2O. Studying the time-dependent evolution of the surface film suggests a kinetics-controlled mechanism involving two competing reactions: oxidation of Cu to Cu2O, and TTAH-Cu complex formation. The TTAH-Cu complex formation proceeds at the cost of …
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Atmospheric Corrosion of Ag and Cu with Ozone, UV and NaCl
… air with high and low CO2 and UV was studied. Cu2O and Cu2(OH)3Cl were both dominant corrosion products after exposure. 0.1 M Na2CO3 instead of 0.1M KCl was used as supporting electrolyte for reduction of Cu2O and Cu2(OH)3Cl, because it can clearly differentiate reduction of Cu2O and …
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Development of manganese oxide based nanostructures by wet chemical methods for enhanced energy storage and photocatalytic applications
… section of this work, different morphologies of Cu2O and porous Cu2O-Mn2O3 micro-nanocomposites (cubes, octahedras and 26-facet polyhedras) with core@shell structure were successfully fabricated via hydrothermal method. Furthermore, the photocatalytic activities of as-synthesized nanostructures …
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Exploiting polar interfaces for photocatalytic water splitting: application to the anatase-cuprous oxide heterojunction
… in the anatase (TiO2) / cuprous oxide (Cu2O) heterojunction, a system which has recently been realized in experiment. Due to its low valence band edge, anatase has a good oxidation potential; by contrast cuprous oxide has a good reduction potential due to its high conduction band edge. …
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Study of thin metal films and oxide materials for nanoelectronics applications
… up to 1000 °C. The phase evolution Cu -> Cu + Cu2O -> Cu2O -> Cu2O + CuO -> CuO is detected. Pure Cu2O films are obtained at 200 °C, whereas uniform CuO films without structural surface defects are obtained in the temperature range 300 - 550 °C. A resistivity phase diagram, which is obtained …
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Fabrication and Characterization of Three Dimensional Photonic Crystals Generated by Multibeam Interference Lithography
… to completely infiltrate the crystal with Cu2O. After polymer removal the inverted Cu2O crystal exhibits a high peak reflectance at the predicted wavelength, indicating the structure is an exact inverse of the template. A conformal growth algorithm is developed for the commonly used …
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Bipolar metal oxide thin film diodes
… that, among these materials, cuprous oxide (Cu2O) and amorphous zinc-tin oxide (a-ZTO) are great materials with potential to form a good heterojunction, but this combination has been mostly unexplored. The simple mathematic model presented in this work shows that the charge carrier injection …
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Solar-driven catalytic processes for sustainable fuels and chemicals production
… reduction reaction (EC CO2RR). In this section, Cu2O microcrystals with controllable low- and high-index facets exposure are fabricated as archetypal catalysts to differentiate the effects of initial exposed facets on structural transformations and product selectivity. The Cu2O catalysts are …
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Thermodynamic and kinetic examinations of inorganic materials formation
… it was verified that all copper oxide forms CuO, Cu2O, and Cu4O3 were made at the solvothermal temperature. It was also shown that at the local scale, no apparent transformation between Cu4O3 and CuO / Cu2O took place, but the transformation between CuO and Cu2O was evident, supporting the …
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Electrochemical and spectroscopic studies of bodipy dyes and nanostructured electrodes for solar energy harvesting and conversion
… comprised of carbon-modified cuprous oxide (C /Cu2O) nanoneedles and oxygen-deficient titanium dioxide (TiO2-x) nanorods in tandem cell was established to enhance charge carrier-separation for unassisted solar water splitting. Although the overall tandem performance is still limited by the …
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Electrochemical and spectroscopic insights into the electroreduction of carbon dioxide to value added chemicals
… The CuSn-DAT electrode has the lowest amount of Cu2O and exhibits the highest activity, whereas the Cu-DAT electrode has an increasing Cu2O content and exhibits lower activity as the potential is made negative. These results demonstrate that the incorporation of different well-mixed alloy …
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