Paper Title:
Growth Mechanism of 3C-SiC Heteroepitaxial Layers on α-SiC by VLS
  Abstract

We report on the heteroepitaxial growth of 3C-SiC layers by Vapor-Liquid-Solid (VLS) mechanism on Si face 6H-SiC substrates, on-axis and 3.5° off. The Si-Ge melts, which Si content was varied from 10 to 50 at%, were fed by 3 sccm of propane. The growth temperature was varied from 1200 to 1600°C. It was found that 3C-SiC layers (either twinned or twinned free) form at low temperature while homoepitaxy is achieved at high temperature. The proposed growth mechanism involves the initial formation of 3C islands during the heating ramp (below 1200°C) and the dissolution of these islands when temperature increases. Geometrical aspects, such as the step density at the surface and the vertical component of the growth, are also considered to explain the difference observed between the on and off axis substrates.

  Info
Periodical
Materials Science Forum (Volumes 600-603)
Edited by
Akira Suzuki, Hajime Okumura, Tsunenobu Kimoto, Takashi Fuyuki, Kenji Fukuda and Shin-ichi Nishizawa
Pages
195-198
DOI
10.4028/www.scientific.net/MSF.600-603.195
Citation
G. Ferro, M. Soueidan, O. Kim-Hak, J. Dazord , F. Cauwet, B. Nsouli, "Growth Mechanism of 3C-SiC Heteroepitaxial Layers on α-SiC by VLS", Materials Science Forum, Vols. 600-603, pp. 195-198, 2009
Online since
September 2008
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