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Improved performance of dye-sensitized solar cells with surface-treated TiO2 as a photoelectrode
- Improved performance of dye-sensitized solar cells with surface-treated TiO2 as a photoelectrode
- Park, SK[Park, Su Kyung]; Chung, C[Chung, Chinkap]; Kim, DH[Kim, Dae-Hwan]; Kim, C[Kim, Cham]; Lee, SJ[Lee, Sang-Ju]; Han, YS[Han, Yoon Soo]
- DGIST Authors
- Kim, DH[Kim, Dae-Hwan]; Kim, C[Kim, Cham]; Lee, SJ[Lee, Sang-Ju]
- Issue Date
- Materials Research Bulletin, 47(10), 2722-2725
- Article Type
- Article; Proceedings Paper
- A. Semiconductors; A. Surfaces; Adsorption; C. Impedance Spectroscopy; Conversion Efficiency; D. Surface Properties; Dip-Coating Process; Dye-Sensitized Solar Cell; Dye-Sensitized Solar Cells (DSCs); Dye Adsorption; Electron Lifetime; Impedance Spectroscopy; Impedance Spectrum; Interfacial Resistances; Photo-Electrode; Photo-Electrodes; Photoelectrochemical Cells; Power Conversion Efficiencies; Reference Devices; Sodium; Solar Cells; Surface-Modified; Surface Properties; TiO; Titanium Dioxide; Ultraviolet Spectroscopy; UV-Visible Absorption Spectra
- We report on the effects of surface-modified TiO 2 on the performance of dye-sensitized solar cells (DSSCs). TiO 2 surface was modified with Na 2CO 3 via a simple dip coating process and the modified TiO 2 was applied to photoelectrodes of DSSCs. By dipping of TiO 2 layer into aqueous Na 2CO 3 solution, the DSSC showed a power conversion efficiency of 9.98%, compared to that (7.75%) of the reference device without surface treatment. The UV-vis absorption spectra, the impedance spectra and the dark current studies revealed that the increase of all parameters was attributed to the enhanced dye adsorption, the prolonged electron lifetime and the reduced interfacial resistance. © 2012 Elsevier Ltd. All rights reserved.
- Elsevier Ltd
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