| Effect of TiO2 Coating Thickness on Photovoltaic Performance of Dye-sensitized Solar Cells Prepared by Screen-printing Using TiO2 Powders |
| Deuk Yong Lee, Hun Cho, Daejun Kang, Jong-Ho Kang1, Myung-Hyun Lee1, Bae-Yeon Kim2, Nam-Ihn Cho3 |
Department of Biomedical/Materials Engineering, Daelim University
1Energy and Environmental Division, KICET
2Department of Advanced Materials Engineering, Incheon National University
3Department of Electronic Engineering, Sun Moon University |
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| ABSTRACT |
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Dye-sensitized solar cells (DSSCs) were synthesized using a $0.25cm^2$ area of a $TiO_2$ nanoparticle layer as the electrode and platinum (Pt) as the counter electrode. The $TiO_2$ nanoparticle layers (12 to 22 ${mu}m$) were screen-printed on fluorine-doped tin oxide glass. Glancing angle X-ray diffraction results indicated that the $TiO_2$ layer is composed of pure anatase with no traces of rutile $TiO_2$. The Pt counter electrode and the ruthenium dye anchored $TiO_2$ electrode were then assembled. The best photovoltaic performance of DSSC, which consists of a $18{mu}m$ thick $TiO_2$ nanoparticle layer, was observed at a short circuit current density ($J_{sc}$) of $14.68mA{cdot}cm^{-2}$, an open circuit voltage ($V_{oc}$) of 0.72V, a fill factor (FF) of 63.0%, and an energy conversion efficiency (${eta}$) of 6.65%. It can be concluded that the electrode thickness is attributed to the energy conversion efficiency of DSSCs. |
| Key words:
Titanium dioxide, Films, Screen-printing, Nanomaterials |
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