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Structures and Properties of C60 & C70 Thin Films Fabricated by Organic MBE

Published online by Cambridge University Press:  25 February 2011

K. Tanigaki ,
T. Ichihsdhi ,
T. W. Ebbesen ,
S. Kuroshima ,
S. Iijima ,
H. Hiura  and
H. Takahashi
K. Tanigaki
Affiliation:
NEC Corporation, Fundamental Research Laboratories, 34-Miyukigaoka, Tsukuba 305, Japan
T. Ichihsdhi
Affiliation:
NEC Corporation, Fundamental Research Laboratories, 34-Miyukigaoka, Tsukuba 305, Japan
T. W. Ebbesen
Affiliation:
NEC Corporation, Fundamental Research Laboratories, 34-Miyukigaoka, Tsukuba 305, Japan
S. Kuroshima
Affiliation:
NEC Corporation, Fundamental Research Laboratories, 34-Miyukigaoka, Tsukuba 305, Japan
S. Iijima
Affiliation:
NEC Corporation, Fundamental Research Laboratories, 34-Miyukigaoka, Tsukuba 305, Japan
H. Hiura
Affiliation:
Department of Chemistry, School of Science and Engineering, Waseda University, Tokyo 169, Japan.
H. Takahashi
Affiliation:
Department of Chemistry, School of Science and Engineering, Waseda University, Tokyo 169, Japan.
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Abstract

The C60/C70 thin film crystals have been fabricated on the (001) surface of alkali halide substrates, KC1, KBr, and NaCl, and their structures have been studied. The crystal structure analyses by TEM show that the hexagonal closed packing (hep) with lattice parameters of a=10.0 Å and c=16.3 Å and the face-centered cubic (fee) with a=14.2 Å coexist in the C60 thin film crystals. The C70 thin film crystals show an expanded lattice constant of a=10.5 Å from the view perpendicular to the stacking plane. The ratio of hep to fee is dependent on the kind of the substrates and on the substrate temperatures during the crystal growth. The observed reversible change in the Raman spectrum of the C60 thin films implies a rotational molecular motion in the thin film crystals.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 247: Symposium N – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials , 1992 , 321
Copyright
Copyright © Materials Research Society 1992

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References

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