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Sunday, May 21, 2017

#370 Surface matters

As indicated in the previous blog, impact of the surface on the properties of semiconductor sample is not limited to the single-atom plane at the surface, but extends to the near-surface region. In practice such near-surface region  can be significantly disturbed structurally by surface roughness and process related physical damage as well as it can be significantly altered in terms of its chemical makeup all of which causes its impact to penetrate deep into the crystal.


Considering all this, it is clear that electronic properties in the near-surface region of any solid, including semiconductors, depart significantly from the same properties in the bulk. For instance, due to the increased scattering of charge carriers resulting from the defective lattice and electrically charged centers in the near-surface region, mobility of carriers moving close to the surface is reduced significantly as compared to the bulk.


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 *Required is the personal blog of Jerzy Ruzyllo. With over 35 years of experience in academic research and teaching in the area of semiconductor engineering (currently holding position of a Distinguished Professor of Electrical Engineering and Professor of Materials Science and Engineering at Penn State University), he has a unique perspective on the developments in this progress driving technical domain and enjoys blogging about it.

With over 2000 terms defined and explained, Semiconductor Glossary is the most complete reference in the field of semiconductors on the market today.

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