Transport Properties in the Rubrene Crystal: Electronic Coupling and Vibrational Reorganization Energy

Authors


  • This work has been partly supported by the National Science Foundation (through the STC Program under Award DMR-0120967, the MRSEC Program under Award DMR-0212302, and Grant CHE-0342321) and the Office of Naval Research. The authors acknowledge stimulating discussions with V. Coropceanu and J. Cornil.

Abstract

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Rubrene has recently attracted much attention in the field of organic semiconductors because of its very high mobilities at room temperature. These observations are a priori surprising, since the tetraphenyl substitution of the tetracene backbone (see Figure) is expected to lead to weak intermolecular interactions and, as a result, low carrier mobilities. This theoretical work provides a clear explanation for the origin of the high mobilities.

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