Bulletin of the Chemical Society of Japan
Online ISSN : 1348-0634
Print ISSN : 0009-2673
ISSN-L : 0009-2673
On the Electrical Conductivity of the Organic Thin Films: Perylene, Coronene and Violanthrene
Hiroo InokuchiHaruo KurodaHideo Akamatu
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1961 Volume 34 Issue 6 Pages 749-753

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Abstract

It was found that the various types of conductivity cells of aromatic hydrocarbons possess great discrepancies of their electrical resistivity. The resistivity observed with the sandwich-type cell, perylene; 1018∼19 Ωcm., coronene; 1017∼18 Ωcm., and violanthrene; 1014 Ωcm., is in quite good agreement with that of the bulk specimen. However, a great difference was found between the resistivities of the sandwich-type and the surface-type cells, perylene; 1013 Ωcm., coronene; 1012∼13 Ωcm., and violanthrene ; 109 Ωcm. This discrepancy in resistivity can be assumed to be introduced from the textured structure of the evaporated films and the substantial anisotropy of crystals; the crystals are in alignment with their a·b plane with the film surface. This orientation was found from the X-ray diffraction results, combined with the electron microscopic observation and the electron microdiffraction results.

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