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Charge transport in molecular semiconductors – Bloch electron or hopping transport ?

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Semiconductors based on van-der-Waals bonded molecular crystals have peculiar electronic properties differing markedly from those of covalently bonded semiconductors such as silicon. Improved control over molecular self-assembly processes from solution has recently led to materials in which intrinsic molecular transport processes can be investigated. Their performance is rivalling that of thin film silicon which is leading to a range of interesting applications enabling electronic functions to be integrated into novel form factors and environments. In this talk we will discuss current understanding of the fundamental charge transport physics of these molecular semiconductors and address in particular the question whether charge transport in these materials is best described in a molecular hopping or a Bloch electron framework.

This talk is part of the Cavendish Physical Society series.

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