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Increased performance of single walled carbon nanotube photovoltaic cells through the addition of dibenzo[b,def]chrysene derivative

Paper ID Volume ID Publish Year Pages File Format Full-Text
27000 43992 2012 5 PDF Available
Title
Increased performance of single walled carbon nanotube photovoltaic cells through the addition of dibenzo[b,def]chrysene derivative
Abstract

Vertically aligned arrays of single walled carbon nanotubes (SWNTs) were chemically attached to an optically transparent electrode of fluorine doped tin oxide (FTO) for use as a working electrode in a photoelectrochemical solar cell. 7,14-Bis[2-[tris(1-methylethyl)silyl]ethynyl]dibenzo[b,def]chrysene (TIPS-DBC) layers were deposited onto the SWNT/FTO electrodes via spin coating. The photovoltaic properties of these new TIPS-DBC/SWNT/FTO electrodes were then investigated. The presence of the additional TIPS-DBC layer was found to increase the open circuit voltage, short circuit current density and power conversion efficiency of the cells compared to those cells made using nanotube only electrodes. In addition, the spin speed at which the TIPS-DBC layer was deposited was found to have an effect on the photovoltaic performance of the cells. These results show much promise for the further development of photovoltaics in which the photoactive elements are carbon based, rather than transition metal based.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Dye sensitised solar cell functionalised with polycyclic aromatic hydrocarbon. ► Single-walled carbon nanotubes replace titanium dioxide as scaffold. ► Presence of aromatic hydrocarbon dramatically increases performance of cell. ► Optimum concentration of deposited aromatic hydrocarbon solution is 30 mg mL−1. ► Optimum spin speed during deposition is 2000 rpm.

Keywords
Single walled carbon nanotubes (SWNTs); Dibenzo[b,def]chrysene (DBC); Optically transparent electrode; Photovoltaic performance; Photoelectrochemical cell
First Page Preview
Increased performance of single walled carbon nanotube photovoltaic cells through the addition of dibenzo[b,def]chrysene derivative
Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 235, 1 May 2012, Pages 72–76
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering