Cu2O nanorod thin films prepared by CBD method with CTAB: Substrate effect, deposition mechanism and photoelectrochemical properties

被引:42
作者
Aref, A. A. [1 ]
Xiong, Liangbin [1 ]
Yan, Nannan [1 ]
Abdulkarem, A. M. [1 ]
Yu, Ying [1 ]
机构
[1] Huazhong Normal Univ, Inst Nanosci & Nanotechnol, Wuhan 430079, Peoples R China
基金
中国国家自然科学基金;
关键词
Nanostructures; Thin films; Optical properties; Electrochemical properties; SOLAR-CELLS; PARTICLES; GROWTH; FABRICATION; SURFACTANT; NANOWIRES; NANOSTRUCTURES; NANOCUBES; TEMPLATE; WHISKERS;
D O I
10.1016/j.matchemphys.2011.02.029
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Cuprous oxide (Cu2O) films with different nanostructures are deposited on different substrates of fluorine-doped SnO2 (FTO) glass, Cu and Ti foil respectively by using chemical bath deposition (CBD) technique with the presence of cetyltrimethylammonium bromide (CTAB). The samples are characterized by X-ray diffractmeter, scanning electron microscopy and UV-vis diffuse reflectance spectroscopy. The results show that the prepared Cu2O films are composed of nanorod arrays when there is CTAB in reaction system. Without CTAB, Cu2O films with nanospheres are formed. The concentration of CTAB is crucial for the controllable synthesis of nanorod structured Cu2O films with different length to diameter ratio and nanorod array density is dependent on both substrates and CTAB. A possible mechanism for the formation of Cu2O nanorods is discussed. Additionally, the UV-vis absorption property for Cu2O nanorods is much better than that for nanospheres. The photovoltage produced under visible light for Cu2O nanorod films is higher than that for the nanospheres. Although Cu2O nanorods on Ti foil can absorb the most visible light, those on Cu foil demonstrate better and more stable photoelectrochemical property than those on any other substrates. This study may be extremely useful for Cu2O based device with nanostructures. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:433 / 439
页数:7
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