Cited 4 time in webofscience Cited 4 time in scopus

Efficiency Enhancement of Dye-Sensitized Solar Cells by Interface Modification Between Photoanode and Electrolyte

Title
Efficiency Enhancement of Dye-Sensitized Solar Cells by Interface Modification Between Photoanode and Electrolyte
Authors
Kim, JT[Kim, Jong Tae]Han, YS[Han, Yoon Soo]
DGIST Authors
Kim, JT[Kim, Jong Tae]
Issue Date
2014-08
Citation
Journal of Nanoscience and Nanotechnology, 14(8), 5921-5925
Type
Article
Article Type
Article
Keywords
Conduction Band EdgeConduction Band Edge ShiftConduction BandsConversion EfficiencyDye-Sensitized Solar CellDye-Sensitized Solar Cells (DSCs)Electrochemical Impedance SpectraElectrodesElectrolytesElectronic Band StructureIncident Photon-to-Current Conversion EfficienciesLiOHOpen Circuit VoltagePhotovoltaic EffectsPower Conversion EfficienciesSolar CellsSurface DipoleTitanium Dioxide
ISSN
1533-4880
Abstract
A nanoporous TiO2 layer on a transparent electrode was modified with an aqueous lithium hydroxide solution by a simple dipping process, and effects of the modified electrode on the photovoltaic properties of dye-sensitized solar cells were investigated. The modification led to a considerable improvement of 23.6% in power conversion efficiency due to an increase in both open circuit voltage and fill factor. From the measurements of the electronic band structure, electrochemical impedance spectra and incident photon-to-current conversion efficiency, it was revealed that the modification by LiOH formed a surface dipole on the TiO2 electrode, leading to a negative shift of conduction band edge of TiO2. Copyright © 2014 American Scientific Publishers.
URI
http://hdl.handle.net/20.500.11750/3061
DOI
10.1166/jnn.2014.8787
Publisher
American Scientific Publishers
Files:
There are no files associated with this item.
Collection:
Division of Nano∙Energy Convergence Research1. Journal Articles


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