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

被引：85

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

页码：2684 / 2690

页数：7

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