Conveniently fabricated heterojunction ZnO/TiO 2 electrodes using TiO 2 nanotube arrays for dye-sensitized solar cells

Rui Liu, Wein Duo Yang, Liang Sheng Qiang, Hsin Yi Liu

研究成果: Article同行評審

59 引文 斯高帕斯(Scopus)

摘要

TiO 2 nanotube arrays with an inner average pore diameter of 83 nm and a length of 14 μm are grown on Ti foils by electrochemical anodization in ammonium fluoride-water-glycerol solution. ZnO is introduced into the TiO 2 nanotube arrays by a convenient electrodeposition technique. ZnO/TiO 2 nanocomposites supported on Ti substrate are used as the photo-anode electrode for dye-sensitized solar cells (DSSCs). The morphology, structure and electrochemical properties are investigated using field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, UV-vis diffusion reflection spectroscopy, X-ray photoelectron spectroscopy and cyclic voltammetry measurements. It is found that ZnO have been embedded in the TiO 2 nanotube arrays, and changed some photoelectric properties. The conversion efficiency of the dye-sensitized solar cells is more than doubled, compared with that of bare TiO 2 nanotube arrays with deposited 60 min. This improvement comes from the synergetic effect between ZnO and TiO 2, which increases dye absorption, electron transport and electron lifetime.

原文English
頁(從 - 到)153-159
頁數7
期刊Journal of Power Sources
220
DOIs
出版狀態Published - 2012 十二月 15

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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