In this study, highly transparent conducting fluorine-doped tin oxide (FTO) electrodes were fabricated using the horizontal ultrasonic spray pyrolysis deposition. In order to improve their transparent conducting performances, we carried out oxygen activation by adjusting the ratio of O/(O+N) in the carrier gas (0%, 20%, and 50%) used during the deposition process. The oxygen activation on the FTO electrodes accelerated the substitution concentration of F (F) into the oxygen sites in the FTO electrode while the oxygen vacancy (V) concentration was reduced.
View Article and Find Full Text PDFJ Nanosci Nanotechnol
September 2013
Beta-SiC was synthesized by direct carbothermal reaction using silicon and SiO2-layer-coated carbon powders. It is usually difficult to control the rate of the direct carbothermal reaction of silicon because the reaction rapidly progresses. Therefore coarse powders are obtained although it has the advantage of low synthesis temperature.
View Article and Find Full Text PDFWe have investigated the nanosurface-confined anisotropic growth of ordered-ellipsoidal Fe nanogranules when an Fe plume was deposited at a slanting angle onto an anodized aluminum oxide (AAO) film. Layer-by-layer growth was also investigated. This growth is driven by two critical factors: (1) a new rhombic AAO cell and (2) the slanting deposition of the Fe plume.
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