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Fluid-solid interaction analysis of the solid phase epitaxial growth in silicon-based thin films

Posted on:2006-12-02Degree:M.S.M.EType:Thesis
University:University of South AlabamaCandidate:Yellapragada, Lakshmi SrikarFull Text:PDF
GTID:2451390008967319Subject:Engineering
Abstract/Summary:
Solid phase epitaxy (SPE) research in silicon-germanium (SiGe) alloys has been receiving much attention recently. However, when SPE is applied to Si based thin films, roughening of the amorphous-crystalline interface of Si occurs. Recently, it was found that the effect of stress on the atomic mobilities influences the growth instability [3]. The objective of the current work is to pursue a new investigative direction in examining the stress effects on the defect generation of the intrinsic Si thin films and the boron-doped Si thin films by means of an FEA-based FSI analysis. The simulation results are compared with the existing experimental results [3, 4, 5] and the simulation results of the previous models [3, 5, 6]. The research findings suggest that the anisotropy of Si and FSI analysis must be appropriately considered in any modeling of the SPE in SiGe alloys.
Keywords/Search Tags:SPE, Thin films
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