| 초록 |
Three organic TPA(triphenylamine)-based sensitizers were synthesized and their optical and electrochemical properties were characterized. Due to their relatively higher extinction coefficient when compared with ruthenium polypyridyl complex, organic dyes are considered as good candidate for sensitizers of solid-state dye-sensitized solar cells(sDSCs) with thin optimized thickness of TiO2 up to 2um. As a result, solid-state organic dye-sensitized solar cells showed power conversion efficiency up to 2.5% and Z907, which have been known to be most efficient dyes for sDSCs showed 1.8% of efficiency. sDSCs with organic dyes showed higher open circuit voltage due to their high dipole moment and shift the TiO2 conduction band energy relative to the Fermi level of the hole transport material(HTM). |
