Charge separation at the modified surface of cuprous oxide thin film

Yasuhiro Tachibana; Ryusuke Muramoto; Susumu Kuwabata

doi:10.1117/12.616095

18 August 2005 Charge separation at the modified surface of cuprous oxide thin film

Yasuhiro Tachibana, Ryusuke Muramoto, Susumu Kuwabata

Proceedings Volume 5929, Physical Chemistry of Interfaces and Nanomaterials IV; 592903 (2005) https://doi.org/10.1117/12.616095
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

Photocurrent improvement for the photoelectrochemical cell, based on a Cu₂O/Cu electrode in hydrophobic ionic liquid electrolyte, was demonstrated by modifying the Cu₂O surface using cyanide treatment, in this case the photocurrent amplitude drastically increased at least by a factor of 10 compared with the non-treatment. Passivation of the surface defect sites through the cyanide treatment process resulted in significantly raising the charge separation yield at the interface. From this experimentation the optimization of the cyanide treatment and the limitation of the photocurrent are considered.

Citation Download Citation

Yasuhiro Tachibana, Ryusuke Muramoto, and Susumu Kuwabata "Charge separation at the modified surface of cuprous oxide thin film", Proc. SPIE 5929, Physical Chemistry of Interfaces and Nanomaterials IV, 592903 (18 August 2005); https://doi.org/10.1117/12.616095

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