Local pH control by electrolysis for ZnO epitaxial deposition on a Pt cathode

• Published in: Electrochimica acta Vol. 62; pp. 348 - 353
• Main Authors: Yagi, Shunsuke, Kondo, Yusuke, Satake, Yuichi, Ashida, Atsushi, Fujimura, Norifumi
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 15.02.2012; Elsevier
• Subjects: Cathodes; Chemistry; Deposition; Diffusion; Electrochemistry; Electrodes: preparations and properties; Electrolysis; Epitaxial growth; Epitaxy; Exact sciences and technology; General and physical chemistry; Local pH distribution; Microorganisms; Other electrodes; Potential-pH diagram; Semiconductors; Zinc oxide; Zinc oxide; Potential-pH diagram; Local pH distribution; Epitaxial growth; Diffusion; Zinc Nitrates; Scanning electron microscopy; Crystal orientation; Cathode; Transition metal; Zinc Oxides; Semiconductor epitaxial layers; Electrode material; X ray diffraction; Surface structure; Transport process; Electrolysis; Platinum; p type semiconductor; Morphology; Potential pH diagram; pH; Modified material

The epitaxial deposition of an oxide semiconductor ZnO thin film was demonstrated on a Pt(1 1 1)/sapphire(0 0 0 1) cathode by local pH control in the vicinity of the cathode. The local pH near the cathode was increased by the selective reduction of NO 3 − ions, resulting in the deposition of a ZnO t...