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Updated: Jul 18, 2026

Comprehensive Characterization of Extended Defects in Semiconductor Materials by a Scanning Electron Microscope
Published on: May 28, 2016
Charge defects glowing in the dark
Bin Deng1, Laurence D Marks, James M Rondinelli
1Department of Materials Science and Engineering, Northwestern University, Evanston, IL 60208-3108, USA. b-deng@northwestern.edu
Abstract:
We investigate the effects of local charge defects in HREM imaging, using electron densities calculated by density functional methods. As a model of a planar interface with a local charge defect we use the polar MgO square root (111)-3 x 3R30 degrees surface, which has an additional hole per surface unit cell. A complimentary example, the non-polar MgO (100) surface that has no local charge defect is simulated for comparison. We show that the contrast due to local charge defects is rather high, and suggest that they should be directly observable.
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