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- W2085181610 abstract "Five side-chain conjugated polythiophene derivatives, P1–P5, were synthesized by Stille coupling reaction. The effects of side-chain structures, bearing CC double bond, CC triple bond as well as different number of methoxy substituents on the benzene ring of the side-chains, on the optical, electrochemical, and photovoltaic properties of the polymers were investigated. From P1 to P3, the effect of CC triple bond and CC double bond was compared. The results indicate that the content of the thiophene units with the CC triple bond in their conjugated side-chains not only influences the absorption shape and intensity, but also influences the energy bandgap and the photovoltaic properties of the polymers. From P3 to P5, the effect of methoxy substituents on the benzene ring of the conjugated side-chains was compared. On increasing the number of the methoxy groups on the benzene ring of the conjugated side chains, the visible π–π∗ absorption of the conjugated polymer backbone become stronger both in solution and in film. Electron-donating ability of the methoxy groups decreased the bandgap of the polymers. The best polymer solar cell based on P5 with a structure of ITO/PEDOT:PSS/Polymer:PCBM (1:1 wt/wt)/Mg/Al showed a power conversion efficiency of 1.45% under the illumination of AM1.5, 80 mW/cm2." @default.
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- W2085181610 date "2007-03-01" @default.
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- W2085181610 title "Synthesis, characterization and photovoltaic properties of thiophene copolymers containing conjugated side-chain" @default.
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- W2085181610 doi "https://doi.org/10.1016/j.eurpolymj.2006.12.008" @default.
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