Method for forming a nanowire structure
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United States of America Patent
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Jan 30, 2018
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Jan 12, 2016
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Jan 13, 2015
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Abstract
Embodiments of the invention describe a method for forming a nanowire structure on a substrate. According to one embodiment, the method includes a) depositing a first semiconductor layer on the substrate, b) etching the first semiconductor layer to form a patterned first semiconductor layer, c) forming a dielectric layer across the patterned first semiconductor layer, and d) depositing a second semiconductor layer on the patterned first semiconductor layer and on the dielectric layer. The method further includes e) repeating a)-d) at least once, f) following e), repeating a)-c) once, g) etching the patterned first semiconductor layers, the dielectric layers, and the second semiconductor layers to form a fin structure, and h) removing the patterned first semiconductor layers from the fin structure.
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