| Summary: | 碩士 === 逢甲大學 === 纖維與複合材料學系 === 100 === Dye-sensitized solar cells (DSSC) has a low-cost and process advantages of easy shaking. This study of supercritical fluid possess a low interfacial tension and time saving features such as dyeing.In this paper, we tried the dyeing method with supercritical carbon dioxide on titanium dioxide photoelectrodes.
Dyeing anthocyanin hue of TiO2 , supercritical dyeing was significantly better than traditional dip method,observed under the D65 source color light.We were under metallographic microscope to observe,discovered that supercritical dyeing anthocyanin 10 minutes effect is better than traditional dip 10 minutes .Supercritical dyeing in 2.4 hours compared with 24 hours of impregnation stain, the effect is more apparent than 10 minutes.But chlorophyll supercritical dyeing isn''t better than anthocyanin.
Use UV/Vis light spectrometer to analysis of anthocyanins in 10 minutes supercritical dyeing absorbance value is higher than impregnation stain 18.15%, and 2.4 hours supercritical dyeing absorbance value is higher than 24 hours impregnation stain 86.42 %. On the other hand, chlorophyll in 10 minutes of supercritical dyeing absorbance value is higher than impregnation stain 39.70%,and 2.4 hours supercritical dyeing absorbance value is higher than 24 hours impregnation stain 25.42%.Found that anthocyanins supercritical dyeing is effected than chlorophyll.
Anthocyanins IV graph, the supercritical staining compared to impregnation stain enhance Isc and Voc 1.20 mA, 290 mV, chlorophyll staining Isc and Voc was raised 0.34 mA, 327 mV.
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