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Compensation effect of boron and nitrogen codoping on the hardness and electrical resistivity of diamond-like carbon films prepared by magnetron sputtering deposition

Published online by Cambridge University Press:  31 October 2012

Chang-Sun Park ,
Sun Gyu Choi ,
Hyung-Ho Park ,
Jin-Nyoung Jang ,
MunPyo Hong  and
Kwang-Ho Kwon
Chang-Sun Park
Affiliation:
Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Korea
Sun Gyu Choi
Affiliation:
Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Korea
Hyung-Ho Park*
Affiliation:
Department of Materials Science and Engineering, Yonsei University, Seoul 120-749, Korea
Jin-Nyoung Jang
Affiliation:
Department of Display and Semiconductor Physics, Korea University, Sejong 339-700, Korea
MunPyo Hong
Affiliation:
Department of Display and Semiconductor Physics, Korea University, Sejong 339-700, Korea
Kwang-Ho Kwon
Affiliation:
Department of Control and Instrumentation Engineering, Korea University, Sejong 339-700, Korea
*
a)Address all correspondence to this author. e-mail: hhpark@yonsei.ac.kr
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Abstract

Nitrogen (N) and boron (B) codoped diamond-like carbon (DLC) films were prepared on silicon oxide substrates by RF magnetron sputtering to optimize the electrical conductivity and hardness of DLC film. The electrical conductivity and hardness of the N–B codoped DLC films were controlled simultaneously by varying N2 flow rate with fixed B target power and varying B target power with fixed N2flow rate. The electrical resistivity of the B-doped DLC films showed a cup-shaped relationship with B target power and a U-shaped relationship with the N–B codoped DLC film. However, hardness of the B-doped DLC films showed a decreasing behavior but it was maintained almost constant for the N–B codoped DLC film. These particular electrical and hardness behaviors of the N–B codoped DLC films could be explained by a neutralization effect of N and B codoping.

Type
Articles
Information
Journal of Materials Research , Volume 27 , Issue 23 , 14 December 2012 , pp. 3027 - 3032
Copyright
Copyright © Materials Research Society 2012

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