Natural patterning of templates on GaAs by formation of cracks

Substrate pre-patterning is an effective way to overcome large lattice mismatch and suppress threading defects in the growth of heterostructures. In this work, a new concept was proposed to form natural patterns on commercial substrates monolithically by the formation of surface cracks. Tensile strain was intentionally brought in with a GaAs or GaNAs layer above an InGaAs layer on GaAs substrates. Surface crack patterns successfully formed during the strain relaxation. The strain in a 1 μm buffer layer atop the pattern was found effectively relaxed. Detailed residual strain distribution was simulated by the finite element method.

Xu, H.Chinese Academy of Sciences (författare)
Li, Y.Chinese Academy of Sciences (författare)
Sadeghi, Mahdad,1964Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)mahdad (författare)
Wang, Shu Min,1963Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)shumin (författare)
Chinese Academy of SciencesChalmers tekniska högskola (creator_code:org_t)

Av författaren/redakt...: Song, Yuxin, 198 ...; Xu, H.; Li, Y.; Sadeghi, Mahdad, ...; Wang, Shu Min, 1 ...

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