| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Zener Tunneling in One-Dimensional Organic Semiconductors at Finite Temperature |
| LIU Wen1, CHENG Jie1, ZHANG Ming-Hua1, LIU De-Sheng1,2**
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1 Department of Physics and Information Engineering, Jining University, Qufu 273155
2 School of Physics, Shandong University, Jinan 250100
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| Cite this article: |
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LIU Wen, CHENG Jie, ZHANG Ming-Hua et al 2011 Chin. Phys. Lett. 28 077103 |
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Abstract Zener tunneling at finite temperature in one-dimensional organic semiconductors under an external electric field is studied within the framework of a tight-binding model. The temperature effect is simulated by the introduction of random forces to lattice motion. It is found that the critical field strength of Zener tunneling decreases with the increasing temperature. Under sufficiently high electric field, dielectric breakdown occurs, which is characterized by the irreversibility of the energy gap.
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| Keywords:
71.20.Rv
71.38.-k
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Received: 25 January 2011
Published: 29 June 2011
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| PACS: |
71.20.Rv
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(Polymers and organic compounds)
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71.38.-k
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(Polarons and electron-phonon interactions)
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