Structural and photovoltaic properties of highly ordered ZnFe2O4 nanotube arrays fabricated by a facile sol-gel template method
Structural and photovoltaic properties of highly ordered ZnFe2O4 nanotube arrays fabricated by a facile sol-gel template method
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通过简便的溶胶-凝胶模板法制备高度有序的 ZnFe2O4 纳米管阵列的结构和光伏特性
DOI：
10.1016/j.actamat.2009.02.022
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发表时间：
2009-05-01
期刊：
影响因子：
9.4
通讯作者：
Chen, Guohua
中科院分区：
文献类型：
--
作者：
Liu, Feifei;Li, Xinyong;Chen, Guohua
以多孔阳极氧化铝（AAO）为模板，采用溶胶-凝胶法成功制备了高度有序的ZnFe 2 O 4纳米管阵列。ZnFe 2 O 4纳米管呈平行有序排列，每根纳米管由许多相互凝集的纳米粒子组成。比较了ZnFe_2 O_4纳米管和凝胶粉末的紫外-可见吸收光谱和表面光电压谱。ZnFe 2 O 4纳米管的光伏响应阈值相对于ZnFe 2 O 4凝胶粉末的光伏响应阈值蓝移了约150 nm，这意味着纳米管中的光生电荷比凝胶粉末具有更高的氧化还原活性。这两种材料都表现得像p型半导体，光生电子在其表面积累。(C)2009 Acta Materialia Inc.由爱思唯尔有限公司出版。保留所有权利。
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.