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In relation to this article, we declare that there is no conflict of interest.
Publication history
Received August 26, 2008
Accepted November 12, 2008
articles This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
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Film properties of nitrogen-doped polycrystalline silicon for advanced gate material

Department of Chemical Engineering and Division of Energy Systems Research, Ajou University, San 5 Woncheon-dong, Yeongtong-gu, Suwon 443-749, Korea 1Eugene Technology Co. Ltd., 209-3 Chuge-ri, Yangji-myun, Yongin 449-824, Korea
changkoo@ajou.ac.kr
Korean Journal of Chemical Engineering, May 2009, 26(3), 824-827(4), 10.1007/s11814-009-0137-3
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Abstract

Deposition of N-doped poly-Si films from SiH4 and NH3 using a single wafer type low pressure chemical vapor deposition (LPCVD) system was investigated to improve the grain size reduction and the grain size distribution. The deposition rate and surface roughness of N-doped Si were greatly affected by the NH3/SiH4 ratio such that they decreased with increasing NH3/SiH4 ratio. X-ray diffraction (XRD) and transmission electron microscopy (TEM) measurements revealed that with increasing NH3/SiH4 ratio, the size of the grains was decreased and the grains size distribution became uniform. Finally, we successfully obtained N-doped poly-Si films having uniform grain size of approximately 6 nm.

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