Two‐dimensional electrical transport of pentacene thin films doped with iodine
作者:
Takashi Minakata,
Masaru Ozaki,
期刊:
Journal of Applied Physics
(AIP Available online 1993)
卷期:
Volume 73,
issue 4
页码: 1819-1825
ISSN:0021-8979
年代: 1993
DOI:10.1063/1.353192
出版商: AIP
数据来源: AIP
摘要:
The logarithmic electrical resistivities of pentacene (PEN) thin films doped with iodine in the direction parallel to the substrate plane fit theT−1/3dependence well. This indicates that the lateral transport of the film was governed by two‐dimensional variable range hopping. In contrast, the logarithmic resistivities of the films perpendicular to the substrate were observed to be almost independent of temperature and to be weaklyT−1/2dependent. This shows that the tunneling mechanism is predominant in perpendicular transport. Two‐dimensional conduction of the film was confirmed by these transport properties, which was expected from the intercalated structure of PEN film doped with iodine.
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