Volume 29 Issue 1
Apr 2015
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ZHOU Hong-Yu, LIU Jie. High-Pressure Induced Quenching of Polaron in the Emeraldine-Base Polymer[J]. Chinese Journal of High Pressure Physics, 2015, 29(1): 75-80. doi: 10.11858/gywlxb.2015.01.013
Citation: ZHOU Hong-Yu, LIU Jie. High-Pressure Induced Quenching of Polaron in the Emeraldine-Base Polymer[J]. Chinese Journal of High Pressure Physics, 2015, 29(1): 75-80. doi: 10.11858/gywlxb.2015.01.013

High-Pressure Induced Quenching of Polaron in the Emeraldine-Base Polymer

doi: 10.11858/gywlxb.2015.01.013
  • Received Date: 17 Jun 2013
  • Rev Recd Date: 25 Jul 2013
  • A hole polaron in the Emeraldine-base polymer under pressure was investigated on the basis of an extended Ginder-Epstein model.We found:the polaron relaxasion was weakened to disappear and the original local charge tended to distribute on the whole chain; Because of the pressure' excitation energy got lower so that the concentration of carriers got higher up to 12 orders of magnitude.In fact, we met a semiconductor-metal transition, our critic pressure was 13.76 GPa.Upon the pressure, there were electronic transitions from the top of the valence band to the bottom of the conduction band, the caculated peak of absorption was at 0.5 eV, which would be a spectrum evidence for the semiconductor-metal transition.

     

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