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    High Field Effect Mobility Oligofluorene Derivatives with High Environmental Stability

High Field Effect Mobility Oligofluorene Derivatives with High Environmental Stability

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In this paper, we report high performance OFETs using two new oligomers, based on fluorene and bithiophene, as the semiconducting layer. Very high field-effect mobility (greater than 0.1 cmsup2/Vs) has been achieved with DH-FTTF. More importantly, these semiconductors exhibit high on/off ratios and no decrease in the on/off ratios for more than two months in air with exposure to ambient light.