Titania Particle Size Effect on the Overall Performance of Dye-Sensitized Solar Cells
| Autor: | Glen E. Fryxell, Tammy P. Chou, Guozhong Cao, Bryan J. Russo, Qifeng Zhang |
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| Rok vydání: | 2007 |
| Předmět: |
Materials science
Nanotechnology Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Dye-sensitized solar cell General Energy Adsorption Chemical engineering law Solar cell Electrode Particle Particle size Physical and Theoretical Chemistry Absorption (chemistry) Current density |
| Zdroj: | The Journal of Physical Chemistry C. 111:6296-6302 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp068939f |
| Popis: | In this paper, we report the solar cell performance of titania (TiO2) film electrodes with various particle sizes. It was found that the TiO2 nanoparticle film with smaller particles ∼10 nm in diameter resulted in a lower overall light conversion efficiency of ∼1.4% with an open-circuit voltage of ∼730 mV, a short-circuit current density of ∼3.6 mA/cm2, and a fill factor of ∼54%. Larger particles ∼23 nm in diameter resulted in a higher efficiency ∼5.2% with an open-circuit voltage of ∼730 mV, a short-circuit current density of ∼12.2 mA/cm2, and a fill factor of ∼58%. Although it was anticipated that particles with smaller diameters would adsorb more dye because of their larger surface area, it was found that particles with larger diameters had better dye adsorption for increased electron−hole generation, resulting in higher short-circuit current density and overall light conversion efficiency. Larger particles were shown to have better dye adsorption, indicating that films consisting of larger particles h... |
| Databáze: | OpenAIRE |
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