Hydrogen evolution on platinum-coated p-silicon photocathodes

被引：61

作者：

Maier, CU ^{[1
]}

Specht, M ^{[1
]}

Bilger, G ^{[1
]}

机构：

[1] CTR SOLAR ENERGY & HYDROGEN RES,D-70565 STUTTGART,GERMANY

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 1996年 / 21卷 / 10期

关键词：

D O I：

10.1016/0360-3199(96)00023-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The influence of various surface morphologies of Pt-coated p-Si electrodes on the photoelectrochemical formation of hydrogen was investigated. To improve the electrocatalytic activity and the stability of monocrystalline p-type silicon electrodes different Pt films have been prepared by various deposition processes. The morphology, atomic concentration, and chemical binding states were analysed by X-ray photoelectron spectroscopy (XPS) and scanning electron microscopy (SEM), respectively. The surface structures of Pt-coated p-Si photocathodes, e.g. ultrathin Pt films or submonolayers prepared by physical vapour deposition (PVD) techniques or Pt island topographies formed by electrochemical processes, lead to specific photocurrent-voltage characteristics indicating that these surface structures can produce hydrogen with a high conversion efficiency. Since homogeneous Pt surface layers on p-Si yield ohmic contacts or low Schottky barrier heights more efficient structures are formed by Pt island topographies. Copyright (C) 1996 International Association for Hydrogen Energy

引用

页码：859 / 864

页数：6

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