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Focusing on effects of charge separation limitations and doping on the photoactivity of TiO 2 , different nanoporous TiO 2 film electrodes were prepared by the sol–gel or the suspension methods, respectively. X-ray diffraction (XRD) characterization revealed for all undoped TiO 2 electrodes (TiO 2 -SG and TiO 2 -P25) mixed phases of anatase and rutile, whereas...
In this work, the photoelectrochemical properties of single crystalline p- and n-SiC, now available from Cree Research, Inc., will be presented. 4H- and 6H-SiC were investigated by electrochemical impedance spectroscopy and cyclic voltammetry. Flatband potentials of p-SiC determined by application of the Mott-Schottky-relation varied from 1.8 to 2.5 V versus NHE depending on the C or Si face and the...
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