Abstract

We investigate the formation of aligned liquid-crystal glasses of an oligofluorene and perform comparative studies of carrier-transport properties of the oligofluorene in both amorphous films and glassy liquid-crystal films. With mesophase-mediated molecular alignment, the bipolar carrier-transport capability of oligofluorene solid films is enhanced by more than an order of magnitude. High bipolar carrier mobilities, up to 2.0×10−2cm2∕Vs for holes and up to 2.3×10−2cm2∕Vs for electrons, are observed in the aligned glassy liquid-crystal films.

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