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Science Forum Index » Materials Forum » effects of strain
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 Posted: Sat Apr 26, 2008 12:09 am |
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I'm studying strain effects on semiconductor materials and i've found
that strain remove degeneracy in valence band: tensile with lh upper
to hh, compressive with heavy-holes upper to light-holes. I don't
understand the effects on bandgap: for example tensile compression
increases or decreases the bandgap (respect to unstrained material)?
Or this effect depends on physical propriety of semiconductor?
thanks |
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