Thermoelectric performance of various benzo-difuran wires.

Péterfalvi, Csaba Géza and Grace, I. and Manrique, D. Z. and Lambert, C. J. (2014) Thermoelectric performance of various benzo-difuran wires. JOURNAL OF CHEMICAL PHYSICS, 140 (17). ISSN 0021-9606

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Abstract

Using a first principles approach to electron transport, we calculate the electrical and thermoelectrical transport properties of a series of molecular wires containing benzo-difuran subunits. We demonstrate that the side groups introduce Fano resonances, the energy of which is changing with the electronegativity of selected atoms in it. We also study the relative effect of single, double, or triple bonds along the molecular backbone and find that single bonds yield the highest thermopower, approximately 22 muV/K at room temperature, which is comparable with the highest measured values for single-molecule thermopower reported to date.

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