Fabrication of Cu2O/TiO2 nanotube heterojunction arrays and investigation of its photoelectrochemical behavior

Hou, Y.; Li, Xin Yong; Zhao, Q.; Quan, X.; Chen, G.

doi:10.1063/1.3224181

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Authors

Hou, Y.

Li, Xin Yong

Zhao, Q.

Quan, X.

Chen, G.

Date

2009

Type

Journal Article

Metadata

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Citation

Hou, Y. and Li, X.Y. and Zhao, Q. and Quan, X. and Chen, G. 2009. Fabrication of Cu2O/TiO2 nanotube heterojunction arrays and investigation of its photoelectrochemical behavior. Applied Physics Letters. 95 (9).

Source Title

Applied Physics Letters

DOI

10.1063/1.3224181

ISSN

0003-6951

School

Department of Chemical Engineering

URI

http://hdl.handle.net/20.500.11937/25831

Collection

Curtin Research Publications

Abstract

Cu2O/TiO2 nanotube heterojunction arrays have been prepared by photoreduction depositing Cu2O nanoparticles on TiO 2 nanotube arrays. The heterojunction arrays show uniformly distributed Cu2O nanoparticles, and high crystallinity of anatase and cubic from the TiO2 and Cu2O, respectively. The asymmetry of the current-voltage plot for the material reveals that a heterojunction has been formed between TiO2 and Cu2O. Enhanced charge separation efficiency and improved photoconversion capability are confirmed by electrochemical impedance spectroscopy and photocurrent measurement. © 2009 American Institute of Physics.