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Origins of growth stresses in amorphous semiconductor thin films | | J A Floro
; P G Kotula
; S C Seel
; D J Srolovitz
; | | Date: |
29 Aug 2003 | | Journal: | Phys Rev Lett, 91 (9), 096101 | | Abstract: | Stress evolution during deposition of amorphous Si and Ge thin films is remarkably similar to that observed for polycrystalline films. Amorphous semiconductors were used as model materials to study the origins of deposition stresses in continuous films, where suppression of both strain relaxation and epitaxial strain inheritance provides considerable simplification. Our data show that bulk compression is established by surface stress, while a subsequent return to tensile stress arises from elastic coalescence processes occurring on the kinetically roughened surface. | | Source: | PubMed, pmid14525195 | | Services: | Forum | Review | Favorites | |
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