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Numerical study of ...
Numerical study of Bloch electron dynamics in wide band-gap semiconductors
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- Nilsson, Hans-Erik (författare)
- Mittuniversitetet,Institutionen för informationsteknologi och medier (-2013),Department of Information Technology, Mid-Sweden University, S-851 70 Sundsvall, Sweden
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- Martinez, A. (författare)
- Department of Electronics, Kungl. Tekniska Högskolan, Electrum 229, S-164 40 Kista, Sweden
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- Sannemo, Ulf (författare)
- Linköpings universitet,Tekniska högskolan,Institutionen för teknik och naturvetenskap
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(creator_code:org_t)
- 2001
- 2001
- Engelska.
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Ingår i: Applied Surface Science. - 0169-4332 .- 1873-5584. ; 184:1-4, s. 199-203
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- In this paper, we are using numerical calculations to demonstrate the importance of band to band tunneling in wide band-gap semiconductors. We have considered 4H-SiC, 3C-SiC and wurtzite GaN as prototype semiconductors in the demonstration. Wide band-gap semiconductors allow device operation under very high-applied electric fields, where significant band to band tunneling is expected to occur. Hexagonal wide band-gap semiconductors have a valence band structure with a large number of bands separated by rather small energies. Our calculation shows that this leads to a very significant band to band tunneling even at relatively low electric fields. In cubic wide band-gap semiconductors the tunneling is much less pronounced. However, at the valence band maximum the band separations are small enough to allow significant band to band tunneling. The spin-orbit interaction tends to bend the band near the maximum creating degradation from a parabolic curvature. This bending is found to significantly influence the band to band tunneling process. © 2001 Elsevier Science B.V. All rights reserved.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- GaN
- Interband tunneling
- SiC
- Spin-orbit splitting
- TECHNOLOGY
- TEKNIKVETENSKAP
- Electrical engineering, electronics and photonics
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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