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Structure and Conductivity of Iodine-Doped C60 Thin Films

Published online by Cambridge University Press:  15 February 2011

Jun Chen ,
Haiyan Zhang ,
Baoqiong Chen ,
Shaoqi Peng ,
Ning Ke  and
S.P. Wong
Jun Chen
Affiliation:
Department of Physics, Zhongshan University, Guangzhou, China
Haiyan Zhang
Affiliation:
Department of Physics, Zhongshan University, Guangzhou, China
Baoqiong Chen
Affiliation:
Department of Physics, Zhongshan University, Guangzhou, China
Shaoqi Peng
Affiliation:
Department of Physics, Zhongshan University, Guangzhou, China
Ning Ke
Affiliation:
Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong
S.P. Wong
Affiliation:
Department of Electronic Engineering, The Chinese University of Hong Kong, Hong Kong
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Abstract

We report here the results of our study on the properties of iodine-doped C60 thin films by IR and optical absorption, X-ray diffraction, and electrical conductivity measurements. The results show that there is no apparent structural change in the iodine-doped samples at room temperature in comparison with that of the undoped films. However, in the electrical conductivity measurements, an increase of more that one order of magnitude in the room temperature conductivity has been observed in the iodine-doped samples. In addition, while the conductivity of the undoped films shows thermally activated temperature dependence, the conductivity of the iodine-doped films was found to be constant over a fairly wide temperature range (from 20°C to 70°C) exhibiting a metallic feature.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 359: Symposium G – Science and Technology of Fullerene Materials , 1994 , 443
Copyright
Copyright © Materials Research Society 1995

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References

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