| Summary: | 碩士 === 國立中央大學 === 化學學系 === 107 === Dye-sensitized solar cells(DSCs) have low cost and high efficiency under dim-light condition. The laboratory previously synthesized cycloruthenated sensitizers (DUY24−DUY27) and proved that β-lowest unoccupied spin orbital distributes on the soft sulfur atom, which strengthens the interaction between the oxidized dye and iodide ion for efficient dye regeneration. The study refers to high efficiency dye C101、C106 and CYC-B20. We replaced the bipyridine of ancillary ligand with bithiazole, then use three cojugated moiety (2-(hexyl)thiophene、2 -(hexylthio) thiophene and 5-(hexylthio)-ethylenedioxythiophene) to attach on bithiazole. Increasing the conjugate length of the ancillary ligand to enhance the absorbance of the MLCT band. The color of CYK dye in DMF solution are brown green. The series of CYK dyes containing bithiazole exhibit red shift with respect to the dyes containing bipyridine. (CYK17 : 560 nm, red shift : 7 nm；CYK18 : 597 nm, red shift : 35 nm ; CYK19 : 580 nm, red shift : 13 nm).
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