Improvement in Hydrogen Photoevolution Efficiency for Platinum-Deposited Indium Phosphide Electrodes by the Removal of Surface States
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概要
- 論文の詳細を見る
Hydrogen photoevolution has been performed using minute platinum (Pt)-island-deposited p-InP electrodes in an HClO_4 solution. The photovoltage for the as-prepared electrodes is low, but is increased by about 0.5 V after anodic dissolution. The electrode capacitance is decreased by sweeping the potential in the region where the anodic dissolution occurs, while it is almost unchanged with the potential sweep in the region where dissolution does not occur. These results indicate that the surface states are removed by the anodic dissolution, leading to the increase in the photovoltage. The Mott-Schottky plot is nominally changed by the anodic dissolution, unlike the current-voltage curves. This unusual result can be explained by the presence of high- and low-energy barrier regions in the InP surface before anodic dissolution, the former area being much larger than the latter.
- 社団法人応用物理学会の論文
- 1994-10-15
著者
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Mizuno Fumio
Ntk Technical Ceramics Division Ngk Spark Plug Co. Ltd.
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NAKATO Yoshihiro
Research Center for Photoenergetics of Organic Materials and Faculty if Engineering Science, Osaka U
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KOBAYASHI Hikaru
Research Center for Photoenergetics of Organic Materials, and Department of Chemistry, Faculty of En
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Nakato Y
Division Of Chemistry Graduate School Of Engineering Science Osaka University
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Mizuno F
National Defense Academy Yokosuka Jpn
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Nakato Yoshihiro
Research Center For Photoenergetics Of Organic Materials And Department Of Chemistry Faculty Of Engi
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MIZUNO Fumiaki
Research Center for Photoenergetics of Organic Materials, and Department of Chemistry, Faculty of En
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Mizuno Fumiaki
Research Center For Photoenergetics Of Organic Materials And Department Of Chemistry Faculty Of Engi
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Kobayashi Hikaru
Research Center For Photoenergetics Of Organic Materials And Department Of Chemistry Faculty Of Engi
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