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- Title
Rutile TiO<sub>2</sub>-modified multi-wall carbon nanotubes in TiO<sub>2</sub> film electrodes for dye-sensitized solar cells.
- Authors
Sun Lae Kim; Song-Rim Jang; Vittal, R.; Jiwon Lee; Kang-Jin Kim
- Abstract
The beneficial influence of incorporation of acid-treated and rutile TiO2 (r-TiO2)-modified multi-wall carbon nanotubes (MWNTs) in TiO2 films on photocurrent–voltage characteristics of dye-sensitized solar cells (DSSCs) was studied. Two different routes were adopted for the modification of acid-treated MWNTs (a-MWNTs) with r-TiO2. The films and MWNTs were characterized by electron microscopy, energy dispersive X-ray spectroscopy, XRD and Raman spectroscopy. In the case of incorporation of a-MWNTs with r-TiO2 modification, short-circuit photocurrent ( J sc) of the pertinent DSSC increased by 35% compared with that of a cell with bare TiO2 film. The open-circuit voltage remained almost the same for all cases. The enhanced J sc is explained by the increased surface area of the film, enhanced cluster formation of TiO2 particles around a-MWNTs, and improved interconnectivity of TiO2 particles in the presence of a-MWNTs.
- Subjects
RUTILE; NANOTUBES; SOLAR cells; X-ray spectroscopy; RAMAN spectroscopy; ELECTRIC resistors; ELECTRON microscopy
- Publication
Journal of Applied Electrochemistry, 2006, Vol 36, Issue 12, p1433
- ISSN
0021-891X
- Publication type
Article
- DOI
10.1007/s10800-006-9238-4