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Issue 12, 2013
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Nanoscale probing of charge transport in an organic field-effect transistor at cryogenic temperatures

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Abstract

We studied charge transport in a field-effect transistor based on an anthracene crystal by single-molecule spectroscopy at cryogenic temperatures. When applying a control voltage to the gate, source and drain electrodes, we observe spectral drifts of the probe molecules' lines, which follow strongly non-exponential (stretched) kinetics, from seconds to tens of minutes. Applying a gate voltage alone, we find a dependence of the spectral shift as the logarithm of time. When an additional source–drain voltage is applied, the spectral shift follows a power law of time, similar to the elementary step of conduction in amorphous solids, postulated in the continuous-time random walk theory of Scher and Montroll.

Graphical abstract: Nanoscale probing of charge transport in an organic field-effect transistor at cryogenic temperatures

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Publication details

The article was received on 15 Nov 2012, accepted on 17 Jan 2013 and first published on 28 Jan 2013


Article type: Paper
DOI: 10.1039/C3CP44072A
Citation: Phys. Chem. Chem. Phys., 2013,15, 4415-4421
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    Nanoscale probing of charge transport in an organic field-effect transistor at cryogenic temperatures

    A. A. L. Nicolet, M. A. Kol'chenko, C. Hofmann, B. Kozankiewicz and M. Orrit, Phys. Chem. Chem. Phys., 2013, 15, 4415
    DOI: 10.1039/C3CP44072A

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