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Charge carrier mobility in poly(p-phenylenevinylene) studied by the time-of-flight technique

 

作者: E. Lebedev,   Th. Dittrich,   V. Petrova-Koch,   S. Karg,   W. Bru¨tting,  

 

期刊: Applied Physics Letters  (AIP Available online 1997)
卷期: Volume 71, issue 18  

页码: 2686-2688

 

ISSN:0003-6951

 

年代: 1997

 

DOI:10.1063/1.120179

 

出版商: AIP

 

数据来源: AIP

 

摘要:

The charge carrier transport in poly(p-phenylenevinylene) (PPV) is investigated by the time-of-flight technique. Mobilities of positive carriers in PPV are determined and the dispersive character of transport is established. The dispersion parameters are analyzed in the frame of a multiple trapping model. The drift mobility of the positive carriers is in the range of 10−5cm2/V s at room temperature for an electric field of105V/cm and increases with increasing field and temperature. The mobility shows thermally activated behavior with an activation energy of about 0.75 eV at zero field. It is shown that the experimental results can be interpreted by polaron transport. ©1997 American Institute of Physics.

 

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