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Dislocation imaging for electronics application crystal selection
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Secroun, Aurelia, Brinza, Ovidiu, Tardieu, Andre, Achard, Jocelyn, Silva, Francois, Bonnin, Xavier, De Corte, Katrien, Anthonis, Ans, Newton, Mark E., Ristein, Juergen, Geithner, Peter and Gicquel, Alix (2007) Dislocation imaging for electronics application crystal selection. In: 12th Hasselt Diamond Workshop 2007 (SBDD XII), Hasselt Univ, Diepenbeek Hasselt, Belgium, 28 Feb - 02 Mar 2007. Published in: Physica status solidi A: applications and materials science, Vol.204 (No.12). pp. 4298-4304. doi:10.1002/pssa.200776331 ISSN 1862-6300.
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Official URL: http://dx.doi.org/10.1002/pssa.200776331
Abstract
High power electronics are today a real challenge for large band gap materials. Devices as simple as switches have to work at ever higher powers and demand material with exceptional properties: in particular, a high breakdown voltage (at least a few 10(6) V/cm), a high mobility-lifetime product (at least 10(-3) cm(2/)V), and a relatively fast response. As far as diamond is concerned, only thick (100 Am) monocrystalline free-standing films of very good quality are expected to fulfill these requirements. Today's growth techniques still create many defects within the crystal that may deteriorate its electrical properties. It is thus our concern to identify which defects are involved and to find a strategy to select films with properties best suited for our power switching applications. Here, it is shown that nitrogen impurities are one major defect that control electrical properties as soon as 1 ppb is contained in the film and that, for lower values, dislocations seem to play a role. Besides, it is shown, that the choice of substrate is involved in the formation of those dislocations within the grown film.
Item Type: | Conference Item (Paper) | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) Q Science > QC Physics |
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||
Journal or Publication Title: | Physica status solidi A: applications and materials science | ||||
Publisher: | Wiley - V C H Verlag GMBH | ||||
ISSN: | 1862-6300 | ||||
Official Date: | December 2007 | ||||
Dates: |
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Volume: | Vol.204 | ||||
Number: | No.12 | ||||
Number of Pages: | 7 | ||||
Page Range: | pp. 4298-4304 | ||||
DOI: | 10.1002/pssa.200776331 | ||||
Status: | Peer Reviewed | ||||
Publication Status: | Published | ||||
Access rights to Published version: | Restricted or Subscription Access | ||||
Conference Paper Type: | Paper | ||||
Title of Event: | 12th Hasselt Diamond Workshop 2007 (SBDD XII) | ||||
Type of Event: | Workshop | ||||
Location of Event: | Hasselt Univ, Diepenbeek Hasselt, Belgium | ||||
Date(s) of Event: | 28 Feb - 02 Mar 2007 |
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