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In this paper, we comparatively studied the energy band diagram and the cutoff wavelength characteristics of germanium–tin (GeSn) fin and pillar array detectors wrapped in a Si 3N 4 liner stressor to unveil the impacts of tensile strain and device architecture in the absorption spectra of the devices. A large tensile strain is introduced into GeSn devices by the expansion of the Si 3N 4 liner stressor...
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