| 초록 |
Dye-sensitized solar cells based on dye-sensitized TiO2 and N3 have been reported by Grtzel. The DSSCs has become the most promising alternative to conventional silicon solar cells. DSSC is composed of dye molecules, TiO2, and electrolytes containing a redox couple and counter electrode. The PtCl4-treated electrode as a catalyst is used as the counter electrode in DSSC because the role of Pt in the counter electrode of a DSSC is to catalyze the reduction of triiodide, I3-, ions that are produced by the oxidation of iodide ions in the electrolyte by the oxidized dye. To increase the efficiency of DSSCs, we used a counter electrode which has ZnO nanorod. The efficiency of Pt-ZnO counter electrode DSSC was improved to 7.01%(grown for 2hrs), 7.63%(grown for 4hrs) and 6.13%(grown for 8hrs), respectively. Compared with a standard DSSC without ZnO nanorod whose efficiency was 6.27%, the energy conversion efficiency increased up about 22% for Pt-ZnO (grown for 4hrs) electrode DSSC. |
