Structural and photovoltaic properties of highly ordered ZnFe2O4 nanotube arrays fabricated by a facile sol-gel template method

被引：83
作者：
Liu, Feifei [1 ]
Li, Xinyong [1 ,2 ]
Zhao, Qidong [1 ]
Hou, Yang [1 ]
Quan, Xie [1 ]
Chen, Guohua [2 ]
机构：
[1] Dalian Univ Technol, Sch Environm & Biol Sci & Technol, State Key Lab Fine Chem, Key Lab Ind Ecol & Environm Engn MOE, Dalian 116024, Peoples R China
[2] Hong Kong Univ Sci & Technol, Dept Chem & Biomol Engn, Kowloon, Hong Kong, Peoples R China
来源：
ACTA MATERIALIA | 2009年 / 57卷 / 09期
基金：
国家高技术研究发展计划(863计划);
关键词：
ZnFe2O4; Nanotube; Template synthesis; Photovoltaic properties; Quantum confinement effects; ZINC FERRITE; MAGNETIC-PROPERTIES; MICROSTRUCTURE; NANOWIRES;
D O I：
10.1016/j.actamat.2009.02.022
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Highly ordered ZnFe2O4 nanotube arrays were successfully prepared using porous anodic aluminum oxide (AAO) template from sol-gel Solution. The ZnFe2O4 nanotubes are orderly arranged in parallel and each nanotube is composed of many agglutinating nanoparticles. The UV-vis absorption and surface photovoltage spectra of the ZnFe2O4 nanotubes and gel powders have been compared. The photovoltaic response threshold of the ZnFe2O4 nanotubes exhibited a blue-shift of about 150 nm with respect to that of the ZnFe2O4 gel powder, which implies that the photogenerated charges in the nanotubes have a higher redox activity than that of the gel powder. Both materials behave like a p-type semiconductor with photogenerated electrons accumulated at their surface. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：2684 / 2690
页数：7
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