A facile route to aligned TiO2 nanotube arrays on transparent conducting oxide substrates for dye-sensitized solar cells

Jijun Qiu; Fuwei Zhuge; Kun Lou; Xiaomin Li; Xiangdong Gao; Xiaoyan Gan; Weidong Yu; Hyung-Kook Kim; Yoon-Hwae Hwang

doi:10.1039/C0JM03689G

A facile route to aligned TiO₂nanotube arrays on transparent conducting oxide substrates for dye-sensitized solar cells†

Jijun Qiu,‡^a Fuwei Zhuge,‡^a Kun Lou,^b Xiaomin Li,*^a Xiangdong Gao,^a Xiaoyan Gan,^a Weidong Yu,^a Hyung-Kook Kim^c and Yoon-Hwae Hwang*^c

Author affiliations

* Corresponding authors

^a State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, China
E-mail: lixm@mail.sic.ac.cn
Fax: + 86-021-52413093
Tel: +86-021-52412554

^b College of Material Science and Engineering, Tongji University, Shanghai, China

^c Department of Nano-Materials Engineering & BK 21 Nano Fusion Technology Division, Pusan National University, Miryang, Korea
E-mail: yhwang@pusan.ac.kr
Fax: +82-055-3535844
Tel: +82-055-3505845

Abstract

TiO₂ nanotube arrays (NTAs) on transparent conducting oxides (TCO) have attracted great attention due to the potential application in dye-sensitized solar cells (DSCs). Here, we introduce the template-assisted process for direct fabrication of aligned TiO₂ NTAs on TCO substrates, involving layer-by-layer adsorption and reaction (LBL-AR) assembled TiO₂ coating on ZnO nanorods (NR). Key factors of the fabrication process on the microstructures of TiO₂ NTAs are analyzed, and the geometry effects of TiO₂ NTAs on the performance and electron transport properties of DSCs are investigated by using electrochemical impedance spectra (EIS). An efficiency of 4.25% (under AM1.5 irradiation, 100 mW cm⁻²) is obtained from N719 sensitized 20 μm thick TiO₂ NTAs with a wall thickness of 20 nm, with J_sc = 8.2 mA cm⁻², V_oc = 0.81 V and FF = 63%.

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Article information

DOI: https://doi.org/10.1039/C0JM03689G
Article type: Paper
Submitted: 29 Oct 2010
Accepted: 20 Jan 2011
First published: 21 Feb 2011

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J. Mater. Chem., 2011,21, 5062-5068

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A facile route to aligned TiO₂ nanotube arrays on transparent conducting oxide substrates for dye-sensitized solar cells

J. Qiu, F. Zhuge, K. Lou, X. Li, X. Gao, X. Gan, W. Yu, H. Kim and Y. Hwang, J. Mater. Chem., 2011, 21, 5062 DOI: 10.1039/C0JM03689G

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