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

Authors Hou, Yang
Li, Xinyong HKUST affiliated (currently or previously)
Zhao, Qidong
Quan, Xie
Chen, Guohua View this author's profile
Issue Date 2009
Source Applied physics letters , v. 95, (9), 2009, AUG 31
Summary Cu2O/TiO2 nanotube heterojunction arrays have been prepared by photoreduction depositing Cu2O nanoparticles on TiO2 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. (C) 2009 American Institute of Physics. [DOI: 10.1063/1.3224181]
ISSN 0003-6951
Language English
Format Article
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