電気化学的に安定な機能性薄膜で被覆した半導体電極

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概要

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• The effects of coating of semiconductor photoelectrodes with thin conductive films have recently been investigated with the purpose of electrode stabilization in aqueous solutions. This article summarizes recent research activities in this area. The materials used in such coating are classified into three groups; noble metals such as Pt and Au, semiconducting oxides such as SnO<SUB>2</SUB> and TiO<SUB>2</SUB>, and polymers such as polypyrrole and polymerized electrcactive reagents. The functions of the coated films and their roles in photoelectrochemical properties of semiconductors are discussed for the most simple case of metal film coating, in reference to metal/semiconductor Shottoky barrier photovolatic cells. Characteristic features of the film-coated electrodes are described for the above-mentioned three kinds of the coated films.

著者

• 米山 宏

  大阪大学工学部応用化学科

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