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Title

Small gap semiconducting organic charge-transfer interfaces

Authors
Alves, H.
Molinari, A. S.
Published in Applied Physics Letters. 2010, vol. 96, no. 23, p. 232102
Abstract We investigated transport properties of organic heterointerfaces formed by single-crystals of two organic donor-acceptor molecules, tetramethyltetraselenafulvalene and 7,7,8,8-tetracyanoquinodimethane (TCNQ). Whereas the individual crystals have unmeasurably high resistance, the interface exhibits a resistivity of few tens of megohm with a temperature dependence characteristic of a small gap semiconductor. We analyze the transport properties based on a simple band diagram that naturally accounts for our observations in terms of charge transfer between two crystals. Together with the recently discovered tetrathiafulvalene–TCNQ interfaces, these results indicate that single-crystal organic heterostructures create functional electronic systems with properties relevant to both fundamental and applied fields.
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NAKANO, Masaki et al. Small gap semiconducting organic charge-transfer interfaces. In: Applied Physics Letters, 2010, vol. 96, n° 23, p. 232102. https://archive-ouverte.unige.ch/unige:35122

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Deposited on : 2014-03-31

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