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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