A Cu2O/TiO2 heterojunction thin film cathode for photoelectrocatalysis

Please use this identifier to cite or link to this item: http://repository.kln.ac.lk/handle/123456789/3985

Title:	A Cu2O/TiO2 heterojunction thin film cathode for photoelectrocatalysis
Authors:	Siripala, W. Ivanovskaya, A. Jaramillo, T.F. Baeck Sung-Hyeon McFarland, E.W.
Keywords:	Photocatalyst; Hydrogen; Photoelectrode; Heterojunction photocathode
Issue Date:	2003
Publisher:	Solar Energy Materials and Solar Cells
Abstract:	A thin film heterojunction photocathode was developed consisting of 100nm of n-type titanium dioxide (TiO2) cathode surface deposited on p-type cuprous oxide (Cu2O). The cuprous oxide was deposited electrochemically on Ti foil. A photocurrent of 0.7mA/cm2(at -1V bias) and an open circuit photovoltage of 460mV were obtained under an illumination of 700W/m2. The photoresponse as a function of pH demonstrated that the TiO2 film protected the Cu2O underlayer against corrosion. These results suggest that using a simple and inexpensive heterostucture configuration, the corrosion limitations of Cu2O alone may be overcome while maintaining a relatively high efficiency for photoelectrolysis.
URI:	http://www.researchgate.net/publication/223850493_A_Cu2OTiO2_heterojunction_thin_film_cathode_for_photoelectrocatalysis
ISSN:	0927-0248
Appears in Collections:	Physics

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