Branched double-shelled TiO2 nanotube networks on transparent conducting oxide substrates for dye sensitized solar cells

Jijun Qiu; Xiaomin Li; Xiangdong Gao; Xiaoyan Gan; Binbin Weng; Lin Li; Zijian Yuan; Zhisheng Shi; Yoon-Hwae Hwang

doi:10.1039/C2JM34574A

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Branched double-shelled TiO₂nanotube networks on transparent conducting oxide substrates for dye sensitized solar cells†

Jijun Qiu,^ab Xiaomin Li,*^b Xiangdong Gao,^b Xiaoyan Gan,^b Binbin Weng,^a Lin Li,^a Zijian Yuan,^a Zhisheng Shi*^a and Yoon-Hwae Hwang^c

Author affiliations

* Corresponding authors

^a School of Electrical and Computer Engineering, University of Oklahoma, Norman, Oklahoma, USA
E-mail: shi@ou.edu
Fax: +1-405-325-7066
Tel: +1-405-325-4292

^b State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
E-mail: lixm@mail.sic.ac.cn
Fax: +86-21-5241-3122
Tel: +86-21-5241-2554

^c Department of Nanomaterials Engineering & BK 21 Nano Fusion Technology Division, Pusan National University, Miryang 627-706, Korea

Abstract

A novel three-dimensional branched double-shelled TiO₂ nanotube network (3DNTNs) structure was constructed on transparent conducting oxide substrates (TCO) by using a ZnO-nanorod array template-assisted method. Various morphological features, such as branch length and population density, could be easily tailored by simply modifying the growth time. The performances of dye-sensitized solar cells (DSCs) fabricated with TiO₂ 3DNTNs are higher than those assembled with 1-dimensional nanotube arrays. The hollow branches filling in the spaces between the double-shelled stem nanotubes increase the amount of dye-loading, resulting in an enhanced light-harvesting ability.

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Article information

DOI: https://doi.org/10.1039/C2JM34574A
Article type: Paper
Submitted: 12 Jul 2012
Accepted: 17 Sep 2012
First published: 20 Sep 2012

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J. Mater. Chem., 2012,22, 23411-23417

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Branched double-shelled TiO₂ nanotube networks on transparent conducting oxide substrates for dye sensitized solar cells

J. Qiu, X. Li, X. Gao, X. Gan, B. Weng, L. Li, Z. Yuan, Z. Shi and Y. Hwang, J. Mater. Chem., 2012, 22, 23411 DOI: 10.1039/C2JM34574A

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Journal of Materials Chemistry