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部分氧化物的价带和导带，电极的电势电位 已有1人参与
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希望能对大家做半导体的薄膜材料、电极材料等有用下边介绍一下：本文来自 American Mineralogist, Volume 85, pages 543–556, 2000 作者：YONG XU AND MARTIN A.A. SCHOONEN 作者来自：Department of Geosciences, State University of New York at Stony Brook, Stony Brook, New York 11794-2100, U.S.A. 影响因子：1.964 摘要：ABSTRACT The absolute energy positions of conduction and valence band edges were compiled for about 50 each semiconducting metal oxide and metal sulfide minerals. The relationships between energy levels at mineral semiconductor-electrolyte interfaces and the activities of these minerals as a catalyst or photocatalyst in aqueous redox reactions are reviewed. The compilation of band edge energies is based on experimental flat band potential data and complementary empirical calculations from electron egativities of constituent elements. Whereas most metal oxide semiconductors have valence band edges 1 to 3 eV below the H2O oxidation potential (relative to absolute vacuum scale), energies for conduction band edges are close to, or lower than, the H2O reduction potential. These oxide minerals are strong photo-oxidation catalysts in aqueous solutions, but are limited in their reducing power. Non-transition metal sulfides generally have higher conduction and valence band edge energies than metal oxides; therefore, valence band holes in non-transition metal sulfides are less oxidizing, but conduction band electrons are exceedingly reducing. Most transition-metal sulfides,however, are characterized by small band gaps (<1 eV) and band edges situated within or close to the H2O stability potentials. Hence, both the oxidizing power of the valence band holes and the reducing power of the conduction band electrons are lower than those of non-transition metal sulfides.  部分氧化价带导带.png |
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