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CNT/PEDOT core/shell nanostructures as a counter electrode for dye-sensitized solar cells

Title
CNT/PEDOT core/shell nanostructures as a counter electrode for dye-sensitized solar cells
Other Titles
PEDOT core
Author
임승순
Keywords
Dye-sensitized solar cell; Counter electrode; Poly(3,4-ethylenedioxythiophene); Carbon nanotube
Issue Date
2011-07
Publisher
ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
Citation
SYNTHETIC METALS,VOL.161,NO.13,2011, 1284-1288
Abstract
CNT/PEDOT nanostructures composed of carbon nanotube (CNT) cores and poly(3,4-ethylenedioxythiophene) (PEDOT) shells were synthesized by chemical oxidative polymerization of 3,4-ethylenedioxythiophene (EDOT) using FeCl(3) and dodecylbenzene sulfonic acid (DBSA) as the oxidant and surfactant, respectively. The resulting CNT/PEDOT nanostructures had a PEDOT layer thickness of 2-5 nm that exhibited not only higher polymerization yield but also enhanced thermal stability and electrical conductivity relative to pure PEDOT. N-Methyl-2-pyrrolidone (NMP)-based CNT/PEDOT paste containing polyvinylidene fluoride (PVDF) as a binder was painted directly onto fluorine-doped tin oxide (Fro) glass for use as a counter electrode (CE) material in dye-sensitized solar cells (DSSCs). While DSSCs made of pure CNT and PEDOT CE exhibited power conversion efficiencies of similar to 3.88% and 4.32% under standard AM 1.5 sunlight illumination, respectively, the cell efficiency was enhanced to similar to 4.62% with the CNT/PEDOT CE. This enhancement was due to the improved fill factor of the CNT/PEDOT-based DSSC realized by the increased electrical conductivity of the CNT/PEDOT composite. (C) 2011 Elsevier B.V. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0379677911001664?via%3Dihub
ISSN
0379-6779
DOI
10.1016/j.synthmet.2011.04.024
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ORGANIC AND NANO ENGINEERING(유기나노공학과) > Articles
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