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Enhanced performance of dye-sensitized solar cells based on electrospun TiO2 electrode

Title
Enhanced performance of dye-sensitized solar cells based on electrospun TiO2 electrode
Authors
Kim, Jeong-HwaJang, Kun-HoSung, Shi-JoonHwang, Dae-Kue
DGIST Authors
Kim, Jeong-Hwa; Jang, Kun-Ho; Hwang, Dae-Kue
Issue Date
2017
Citation
Journal of Nanoscience and Nanotechnology, 17(11), 8117-8121
Type
Article
Article Type
Article
Keywords
Dye Sensitized Solar Cells (DSCs)Dye Sensitized Solar Cells (DSCs)Electrochemical Impedance Spectroscopy (EIS)Electrochemical Impedance Spectroscopy (EIS)Electrochemical Impedance Spectroscopy MeasurementsElectrodesElectron MicroscopyElectronsElectrospinningElectrospinning TechniquesFluorine Doped Tin Oxide (FTO)High Resolution Transmission Electron MicroscopyN,N DimethylformamideNanocompositesNanofibersOpen Circuit VoltageOpen Circuit Voltage DecayOpen Circuit Voltage DecaysPolyvinyl AcetatesScanning Electron Microscopy (SEM)Solar CellsSpectroscopySpinning (Fibers)Thermogravimetric AnalysisTin OxidesTitaniumTitanium Dioxides (TiO2)Titanium IsopropoxideTransfer ResistanceTransmission Electron MicroscopyX Ray Diffraction
ISSN
1533-4880
Abstract
Dye-sensitized solar cells (DSSCs) were fabricated using electrospun titanium dioxide (TiO2) nanofibers as photoelectrodes. The electrospun TiO2 nanofibers photoelectrodes possess unique structural features that offer high surface area for enhanced dye loading and enable the fast and effective transport of electrons to the collection electrode. Using the electrospinning technique, the nanofibers were grown directly onto the fluorine-doped tin oxide glass from a typical spinning of solution. The solution is that the titanium isopropoxide and polyvinyl acetate are composited in N,N-dimethylformamide. The characteristics of electrospun TiO2 nanofibers were investigated by scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, and X-ray diffraction. DSSC characteristics were investigated by current density–voltage curve, open circuit voltage decay (OCVD), and electrochemical impedance spectroscopy (EIS) measurements. OCVD and EIS analyses revealed that cells based on TiO2 nanofiber photoelectrodes possess lower transfer resistance and longer electron lifetime than nanoparticle based cells. Copyright © 2017 American Scientific Publishers All rights reserved.
URI
http://hdl.handle.net/20.500.11750/4422
DOI
10.1166/jnn.2017.15114
Publisher
American Scientific Publishers
Files:
There are no files associated with this item.
Collection:
Convergence Research Center for Solar Energy1. Journal Articles


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