| Summary: | 碩士 === 國立臺北科技大學 === 有機高分子研究所 === 98 === My research was used hydrophobic (3,3,3-trifluoropropyl) trimethoxysilane (CF3-silane) to make the self-assembled monolayer (SAM) modified the PET/ITO surface as anode, and was prepared flexible polymer solar cells. I was to analyzer growth, surface morphology of contact angle, photoelectron spectrum analyzer (AC-2), AFM of ITO surface. CF3-silane is confirmed deposited on the ITO surface of contact angle apparatus and the angle increased of the -CF3 concentration for hydrophobic groups. Furthermore, by the AC-2 was the work function of ITO surface, and the work function increased form the -CF3 concentration of positive dipole groups and the work function was to conform energy level in the concentration of 0.5 wt% for CF3-silane modified ITO of polymer solar cell components. AFM images were to display morphological variation of CF3-silane growth in different concentration distribution on ITO surface. The images spread two-dimensionally in the low concentration under the ITO surface. Besides, the images spread two- dimensionally and grew vertically adsorption in high concentration under the ITO surface.
In devices, we were used 70 ℃ heating CF3-silane layer, and were to improve the power conversion efficiency (PCE). Therefore, the optimal concentration is 0.5 wt% of CF3-silane to do an electronic blocking layer of the polymer solar cells and the PCE is 3.06 %. However, we found that poly (3,4-ethylene dioxythiophene): poly (styrenesulfonate) (PEDOT: PSS) and CF3-silane as electron blocking layer stability solar cell components measurement, the short circuit current (JSC) recession were 22% and 15 %, and the PCE recession were 33% and 27%. The CF3-silane substituted PEDOT: PSS modified ITO as anode and the ability was to low on oxygen penetration. We were used deposition of calcium on the modified ITO as anode and the components were to be packaged and the transparencies were to observation of oxygen penetration with UV-vis. The experiment result, CF3-silane modified ITO lower than PEDOT: PSS modified ITO of oxygen penetration. Therefore, CF3-silane modified ITO as anode can to reduce the impact of oxygen on the component interface; the lives extend of the polymer solar cells.
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