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Effects of the incorporation of carbon powder into nanostructured TiO2 film for dye-sensitized solar cell

Paper ID Volume ID Publish Year Pages File Format Full-Text
28354 44071 2007 8 PDF Available
Title
Effects of the incorporation of carbon powder into nanostructured TiO2 film for dye-sensitized solar cell
Abstract

A nanoporous electrode was prepared by incorporating various amounts of carbon powder (Vulcan X-72) into TiO2 paste. To remove the black-colored carbon elements, high-temperature (550 °C) thermal treatment was required for a long period of time (from 30 to 50 min). In this way, a nanoporous TiO2 electrode with a high specific surface area and high porosity was formed after the incorporation of the carbon powder. Especially, the sample containing 1 wt% of carbon powder exhibited the best performance: a Voc of −0.72 V, a Jsc of 12.69 mA/cm2, a fill factor of 62% and an efficiency of 5.6%. Furthermore, the charge recombination between the photoinjected electrons from the excited dye and the I3− ions in the electrolyte induced by the enhanced surface was investigated by cyclic voltammetry and dark current measurements. In addition, mechanically stable TiO2 films were formed in the range of carbon powder contents used in this study. From the above results, it can be concluded that the modification of the TiO2 electrodes with a suitable carbon powder allows them to be used in dye-sensitized solar cells with improved performance and minor side effects.

Keywords
Carbon-modified TiO2 electrode; Dye-sensitized solar cell; Porosity; Electron transport; Fill factor
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Effects of the incorporation of carbon powder into nanostructured TiO2 film for dye-sensitized solar cell
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 186, Issues 2–3, 25 February 2007, Pages 234–241
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us