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Sunday, April 9, 2017

#368 Crystal defects

Considering complexity of the crystal structure of semiconductors an assumption that it consists of a perfectly periodic three-dimensional array of elemental cells, each featuring identical arrangement of atoms over the large volumes of crystal, is  unrealistic. 


Real crystals contain structural imperfections referred to as defects. The problem is that any departure from the lattice periodicity in the form of a defect has an adverse effect on electrical characteristics of material, and hence, the performance of devices based on such material. Some missing atoms here, some misplaced atoms there, combined with crystallographic planes in the crystal shifted with respect to each other may render semiconductor crystal unsuitable for device manufacturing. No wonder that defect engineering is a critically important part of semiconductor materials science and engineering.


Posted by Jerzy Ruzyllo at 08:30 PM | Semiconductors | Link 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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