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Photovoltaic properties of TiO2-based solar cells with sodium ethanesulfonate-modified photoelectrodes

Title
Photovoltaic properties of TiO2-based solar cells with sodium ethanesulfonate-modified photoelectrodes
Authors
Kim, S.J.Kim, Wook HyunLee, C.-H.Kim, H.-M.Kang, C.S.Han, Y.S.
DGIST Authors
Kim, Wook Hyun
Issue Date
2017
Citation
Molecular Crystals and Liquid Crystals, 651(1), 265-272
Type
Article
Article Type
Article
Keywords
Dye-Sensitized Solar CellsElectrochemical Impedance SpectroscopyElectron LifetimeInterfacial ChargeOpen Circuit VoltageOpen Circuit Voltage DecaysPhotoelectrodePhoto-Injected ElectronsPhotovoltaic PropertyPower Conversion EfficienciesRecombinationSodium EthanesulfonateSolar CellsSolar Power GenerationSurface Treatment
ISSN
1542-1406
Abstract
Effects of sodium ethanesulfonate (SES) adsorbed on photoelectrode surface on the performance of dye-sensitized solar cells (DSSCs) was investigated. SES-modified photoelectrode was prepared by soaking the TiO2 film to an aqueous SES solution for 20 min. The DSSC with SES-modified TiO2 layer showed an increase in open circuit voltage (Voc), short circuit current (Jsc) and fill factor (FF), resulting in a power conversion efficiency of 11.20%, compared to that of reference device with bare TiO2 (10.21%). Electrochemical impedance spectroscopy and open circuit voltage decay measurements revealed that the SES modification of TiO2 surface led to a longer electron lifetime by the suppression of the interfacial charge recombination between photo-injected electrons and I3 − ions, resulting in an increase in Jsc and Voc, compared with those of a reference device without surface modification. © 2017 Taylor & Francis Group, LLC.
URI
http://hdl.handle.net/20.500.11750/4710
DOI
10.1080/15421406.2017.1338094
Publisher
Taylor and Francis Inc.
Files:
There are no files associated with this item.
Collection:
Convergence Research Center for Solar Energy1. Journal Articles


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