Dye-sensitized solar cell with a titanium-oxide-modified carbon nanotube transparent electrode
Author
Kyaw, A. K. K.
Tantang, H.
Wu, T.
Ke, L.
Peh, C.
Huang, Z. H.
Zeng, X. T.
Demir, Hilmi Volkan
Zhang, Q.
Sun, X. W.
Date
2011-07-15Source Title
Applied Physics Letters
Print ISSN
0003-6951
Publisher
American Institute of Physics
Volume
99
Issue
2
Pages
21107-1 - 21107-3
Language
English
Type
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Abstract
Transparent and conductive carbon-based materials are promising for window electrodes in solid-state optoelectronic devices. However, the catalytic activity to redox reaction limits their application as a working electrode in a liquid-type dye-sensitized solar cell (DSSC). In this letter, we propose and demonstrate a transparent carbon nanotubes (CNTs) film as the working electrode in a DSSC containing iodide/triiodide redox couples. This implementation is realized by inhibiting the charge-transfer kinetics at CNT/redox solution interface with an aid of thin titanium oxide film that facilitates the unidirectional flow of electrons in the cell without sacrificing the electrical and optical properties of CNT.