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Optical Properties of Oriented Crystalline Oligothiophene Thin Films

Published online by Cambridge University Press:  10 February 2011

K. Suzuki ,
N. Shimizu ,
Y. Shiraishi ,
M. Kuroda  and
Y. Kanemitsu
K. Suzuki
Affiliation:
Fuji Electric Corporate Research and Development, Ltd., Yokosuka, Kanagawa 240-01, Japan
N. Shimizu
Affiliation:
Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
Y. Shiraishi
Affiliation:
Fuji Electric Corporate Research and Development, Ltd., Yokosuka, Kanagawa 240-01, Japan
M. Kuroda
Affiliation:
Fuji Electric Corporate Research and Development, Ltd., Yokosuka, Kanagawa 240-01, Japan
Y. Kanemitsu
Affiliation:
Institute of Physics, University of Tsukuba, Tsukuba, Ibaraki 305, Japan
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Abstract

We have studied optical properties of oriented crystalline oligothiophene (T4-T6) thin films to analyze the correlation between optical properties and microstructures in organic films. By using conventional vacuum deposition and organic molecular beam deposition techniques, we fabricated oriented crystalline oligothiophene thin films on fused silica glasses. Luminescence spectrum and dynamic. depend on the thickness of the crystalline films. X-ray and scanning electron microscope analyses show that with an increase of film thickness, the average size of microcrystals increases and then saturates to a constant (∼300 nm). The anisotropy of absorption and luminescence spectra show the orientation of molecules in thick films.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 413: Symposium W – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials III , 1995 , 547
Copyright
Copyright © Materials Research Society 1996

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References

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