Das Chittaranjan, Tallarida Massimo, Schmeisser Dieter
Brandenburg University of Technology, Panta Rhei K.-Wachsmann-Allee 17, Cottbus, Germany.
Nanoscale. 2015 May 7;7(17):7726-33. doi: 10.1039/c5nr00764j.
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.
光电化学（PEC）水分解是绿色能源生成与存储领域中最具潜力的新兴领域之一。在此，我们展示了一项关于覆盖有TiO₂纳米层的微结构硅的研究。这些微结构通过对硅进行恒电流选择性蚀刻制备而成。TiO₂纳米层通过原子层沉积（ALD）法沉积，以保护微结构光阴极免受腐蚀。与裸硅相比，所制备的微结构光阴极的起始电位向阳极方向偏移了400 mV。由TiO₂纳米层叠层的硅微结构在长达60小时的测量过程中表现出稳定性。
