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Epitaxial growth of Ge film on 6H-SiC(0001) by LPCVD

Y. L. HAN1, H. B. PU1, Y. ZANG1, L. B. LI1,2,*

Affiliation

  1. Department of Electronic Engineering, Xi’an University of technology, Xi’an, China
  2. School of Science, Xi’an polytechnic University, Xi’an, China

Abstract

Ge thin films were prepared on 6H SiC(0001) substrates by low pressure chemical vapor deposition. X ray diffraction, Scanning electron Microscope and Raman spectroscopy were applied to characterize the Ge/6H SiC heterostructures. XRD spectra shows that only o ne peak is located at 2θ= 26.68°, which indicated that Ge films grow preferentially along <111> crystalline orientation on 6H SiC(0001) Si face at 850 ℃℃. T he epitaxial growth of the Ge film follows the Stranski Krastanow mode, Ge spherical islands form on th e two dimensional layer with a critical thickness of 7.5nm..

Keywords

SiC/Ge heterostructure, LPCVD, Oswald coalescence, Stranski Krastanow mode.

Citation

Y. L. HAN, H. B. PU, Y. ZANG, L. B. LI, Epitaxial growth of Ge film on 6H-SiC(0001) by LPCVD, Optoelectronics and Advanced Materials - Rapid Communications, 10, 9-10, September-October 2016, pp.737-739 (2016).

Submitted at: March 3, 2016

Accepted at: Sept. 29, 2016