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
- Author(s)
- Kim, JT[Kim, Jong Tae] ; Han, YS[Han, Yoon Soo]
- DGIST Authors
- Kim, JT[Kim, Jong Tae]
- Issued Date
- 2014-08
- Type
- Article
- Article Type
- Article
- Subject
- Conduction Band Edge ; Conduction Band Edge Shift ; Conduction Bands ; Conversion Efficiency ; Dye-Sensitized Solar Cell ; Dye-Sensitized Solar Cells (DSCs) ; Electrochemical Impedance Spectra ; Electrodes ; Electrolytes ; Electronic Band Structure ; Incident Photon-to-Current Conversion Efficiencies ; LiOH ; Open Circuit Voltage ; Photovoltaic Effects ; Power Conversion Efficiencies ; Solar Cells ; Surface Dipole ; Titanium 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.
- Publisher
- American Scientific Publishers
- Files in This Item:
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- Appears in Collections:
- ETC 1. Journal Articles
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