Nucleation and Growth of Metamorphic Epitaxial Aluminum on Silicon (111) 7 x 7 and v3 x v3 surfaces
Abstract
The nucleation and growth of Al on 7×7 and v3×v3 R30 Al reconstructed Si (111) that result in strain-free Al overgrown films are grown with an atomically abrupt metamorphic interface are compared. The reconstructed surfaces and abrupt strain relaxation are verified using reflection high energy electron diffraction. The topography evolution is studied with atomic force microscopy. The growth of Al on both the surfaces exhibit 3D island growth, but the island evolution of growth is dramatically different. On the 7×7 surface, mounds form uniformly distributed across the substrate, and growth appears to proceed uniformly. Alternatively, on the v3×v3 R30 surface, Al atoms exhibit a clear preference to form mounds near the step edges. During Al growth, mounds increase in size and number, expanding out from step edges until they cover the whole substrate.
- Authors:
-
- University of Maryland at College Park
- BATTELLE (PACIFIC NW LAB)
- Publication Date:
- Research Org.:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1592708
- Report Number(s):
- PNNL-SA-128876
- DOE Contract Number:
- AC05-76RL01830
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Materials Research
- Additional Journal Information:
- Journal Volume: 32; Journal Issue: 21
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Alexander, Ashish, McSkimming, Brian M., Arey, Bruce W., Arslan, Ilke, and Richardson, Christopher J. Nucleation and Growth of Metamorphic Epitaxial Aluminum on Silicon (111) 7 x 7 and v3 x v3 surfaces. United States: N. p., 2017.
Web. doi:10.1557/jmr.2017.322.
Alexander, Ashish, McSkimming, Brian M., Arey, Bruce W., Arslan, Ilke, & Richardson, Christopher J. Nucleation and Growth of Metamorphic Epitaxial Aluminum on Silicon (111) 7 x 7 and v3 x v3 surfaces. United States. https://doi.org/10.1557/jmr.2017.322
Alexander, Ashish, McSkimming, Brian M., Arey, Bruce W., Arslan, Ilke, and Richardson, Christopher J. 2017.
"Nucleation and Growth of Metamorphic Epitaxial Aluminum on Silicon (111) 7 x 7 and v3 x v3 surfaces". United States. https://doi.org/10.1557/jmr.2017.322.
@article{osti_1592708,
title = {Nucleation and Growth of Metamorphic Epitaxial Aluminum on Silicon (111) 7 x 7 and v3 x v3 surfaces},
author = {Alexander, Ashish and McSkimming, Brian M. and Arey, Bruce W. and Arslan, Ilke and Richardson, Christopher J.},
abstractNote = {The nucleation and growth of Al on 7×7 and v3×v3 R30 Al reconstructed Si (111) that result in strain-free Al overgrown films are grown with an atomically abrupt metamorphic interface are compared. The reconstructed surfaces and abrupt strain relaxation are verified using reflection high energy electron diffraction. The topography evolution is studied with atomic force microscopy. The growth of Al on both the surfaces exhibit 3D island growth, but the island evolution of growth is dramatically different. On the 7×7 surface, mounds form uniformly distributed across the substrate, and growth appears to proceed uniformly. Alternatively, on the v3×v3 R30 surface, Al atoms exhibit a clear preference to form mounds near the step edges. During Al growth, mounds increase in size and number, expanding out from step edges until they cover the whole substrate.},
doi = {10.1557/jmr.2017.322},
url = {https://www.osti.gov/biblio/1592708},
journal = {Journal of Materials Research},
number = 21,
volume = 32,
place = {United States},
year = {Tue Nov 14 00:00:00 EST 2017},
month = {Tue Nov 14 00:00:00 EST 2017}
}
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