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A PVdF-based electrolyte membrane for a carbon counter electrode in dye-sensitized solar cells

Title
A PVdF-based electrolyte membrane for a carbon counter electrode in dye-sensitized solar cells
Author
이성철
Keywords
GRAPHENE OXIDE; LOW-COST; GEL ELECTROLYTE; NANOTUBE HYBRID; PERFORMANCE; LAYER; FABRICATION; COMPOSITE; DSSC; RECOMBINATION
Issue Date
2017-04
Publisher
ROYAL SOC CHEMISTRY
Citation
RSC ADVANCES, v. 7, no. 34, page. 20908-20918
Abstract
This research demonstrates the design and operation of a dye-sensitized solar cell (DSSC) with a multiwalled carbon nanotube counter electrode (CE) and a pore-filled membrane consisting of polyvinylidene fluoride-co-hexafluoropropylene (PVdF-co-HFP) as an electrolyte. In this cell, the internal resistance was substantially reduced and the efficiency was found to be as high as 6.04% under 1 sun. For this purpose, a sequence of experiments was carried out to demonstrate that the PVdF-co-HFP membrane possessed superior porosity to absorbed electrolytes and is more compatible with MWCNT CE as compared to the commonly used liquid electrolyte. For a comparison of results, different types of DSSC assemblies composed of MWCNT CEs were fabricated with liquid-, gel-and electrolyte-filled PVdF-co-HFP membranes. Morphological studies showed that the PVdF-co-HFP membrane is a regular and highly porous nano-web which provides optimized interfacial contact with defect-rich MWCNT CE. Detachment of the carbon particles from the CE causes short circuits and lower efficiency of the DSSCs. The proposed DSSC design not only lowers the interfacial charge transfer resistance (RCT = 2.98 U) but also reduces the risk of short circuits in the cell. This sustainable and highly efficient DSSC structure provides a new method for the simple fabrication of flexible solar cells and electronic devices.
URI
https://pubs.rsc.org/en/content/articlelanding/2017/RA/C7RA00005G#!divAbstracthttp://repository.hanyang.ac.kr/handle/20.500.11754/113749
ISSN
2046-2069
DOI
10.1039/c7ra00005g
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > CHEMICAL ENGINEERING(화학공학과) > Articles
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