| PHOTOELECTROCHEMICAL AND DIELECTRIC PROPERTIES OF PAINTED IRON OXIDE ELECTRODES |
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| 作者姓名： | 柳昌义 蔡生民 S.M.WILHELM S.D.KAPUSTA A.VIEHBECK NORMANHACKERMAN |
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| 作者单位： | Department of Chemistry，Shandong University Jinan，Department of Chemistry，Peking University，Battelle Houston Research Centre，U.S.A.，Department of Chemistry，Rice University，Houston，U.S.A，Department of Chemistry，Rice University，Houston，U.S.A，Department of Chemistry，Rice University，Houston，U.S.A |
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| 摘 要： | Polycrystalline iron oxide electrodes made by thermal decomposition of Fe (C_8H_(15)O_2)_3[Iron (Ⅲ) 2-ethylhexanoate] on Fe, Ti and Pt substrates were characterized with respectto their dielectric and photoelectrochemical properties. The thermal decomposition process pro-duces a stable ferric oxide lattice (Fe_2O_3) possessing n-type semiconductor characteristics. Thephotoelectrochemical behavior of painted electrodes was shown to be equivalent to iron oxideproduced by thermal or anodic oxidation. From A. C. impedance measurements, an equivalentcircuit of the interface was constructed, that provided values for the space charge capacitanceand resistance. With the equivalent circuit, impedance measurements can be used to ascertainrapidly the relative photo-efficiencies of photoanodes.
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