Si microstructures laminated with a nanolayer of TiO2 as long-term stable and effective photocathodes in PEC devices

被引：22
|
作者：
Das, Chittaranjan [1 ]
Tallarida, Massimo [1 ]
Schmeisser, Dieter [1 ]
机构：
[1] Brandenburg Tech Univ Cottbus, Cottbus, Germany
来源：
NANOSCALE | 2015年 / 7卷 / 17期
关键词：
SILICON PHOTOCATHODE; SOLAR-CELLS; HYDROGEN EVOLUTION; WATER OXIDATION; X-RAY; LAYER;
D O I：
10.1039/c5nr00764j
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Photoelectrochemical (PEC) water splitting is one of the most emerging fields for green energy generation and storage. Here we show a study of microstructured Si covered by a TiO2 nano-layer. The microstructures are prepared by galvanostatic selective etching of Si. The TiO2 nano-layer was deposited by atomic layer deposition (ALD) to protect the microstructured photocathode against corrosion. The obtained microstructured photocathode showed a shift in the onset potential of 400 mV towards the anodic direction compared to bare Si. The Si microstructures laminated with a nano-layer of TiO2 show stability over 60 hours of measurement.
引用
收藏
页码：7726 / 7733
页数：8
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