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Grating-Coupled Strain-Enhanced Light Emission from Mechanically Stressed Germanium Nanomembranes

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Abstract

Direct-bandgap light emission from Ge nanomembranes is strongly enhanced and red-shifted through the application of tensile strain, combined with the use of a periodic array of amorphous-Si nanopillars to outcouple the strain-enhanced luminescence.

© 2013 Optical Society of America

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