Field-induced charge transport at the surface of pentacene single crystals: A method to study charge dynamics of two-dimensional electron systems in organic crystals
By J. Takeya, C. Goldmann, S. Haas, K. Pernstich, B. Ketterer, B. Batlogg. 2003
224 citations recorded by the source corpus.
A method has been developed to inject mobile charges at the surface of organic molecular crystals, and the dc transport of field-induced holes has been measured at the surface of pentacene single crystals. To minimize damage to the soft and fragile surface, the crystals are attached to a prefabricated substrate which incorporates a gate dielectric (SiO2) and four probe pads. The surface mobility of the pentacene crystals ranges from 0.1 to 0.5 cm2/V s and is nearly temperature independent above ∼150 K, while it becomes thermally activated at lower temperatures when the induced charges become localized. Ruling out the influence of electric contacts and crystal grain boundaries, the results contribute to the microscopic understanding of trapping and detrapping mechanisms in organic molecular crystals.
Subfields: Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering
View Paper: https://www.semanticscholar.org/paper/1c6cc6204ada31c476181a04bb0b0c8080e8205e
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In Atomic and Molecular Physics, and Optics
In Electrical and Electronic Engineering
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Citations in the corpus
- Electrostatic modification of novel materials (2006, methodology): “The first approach is based on electrostatic bonding the surface of an organic film or crystal to a source-drain-gate structure that is prefabricated on a separate substrate de Boer et al., 2003; Takeya et al., 2003; Sundar et al., 2004 .”