Highly Mismatched, Dislocation-Free SiGe/Si Heterostructures.

Isa, Fabio; Salvalaglio, Marco; Dasilva, Yadira Arroyo Rojas; Meduňa, Mojmír; Barget, Michael; Jung, Arik; Kreiliger, Thomas; Isella, Giovanni et al. · Adv Mater · 2016

basic_science · Level V

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Record sourced from PubMed, PMID 26829168.
Also identified by DOI 10.1002/adma.201504029.
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Abstract

Defect-free mismatched heterostructures on Si substrates are produced by an innovative strategy. The strain relaxation is engineered to occur elastically rather than plastically by combining suitable substrate patterning and vertical crystal growth with compositional grading. Its validity is proven both experimentally and theoretically for the pivotal case of SiGe/Si(001).

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