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Doping-induced band...
Doping-induced bandgap narrowing in Si rich n- and p-type Si1-xGex
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- van Teeffelen, S. (författare)
- Uppsala universitet,Fysiska institutionen,Fysik IV,Teoretisk magnetism,Kondenserade materiens teori
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- Persson, Clas (författare)
- Uppsala universitet,KTH,Materialvetenskap,Fysiska institutionen,Fysik IV,Teoretisk magnetism,Kondenserade materiens teori
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- Eriksson, Olle (författare)
- Uppsala universitet,Fysiska institutionen,Fysik IV,Teoretisk magnetism
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- Johansson, Börje (författare)
- Uppsala universitet,KTH,Materialvetenskap,Fysiska institutionen,Fysik IV,Teoretisk magnetism,Kondenserade materiens teori
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(creator_code:org_t)
- 2003-01-13
- 2003
- Engelska.
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Ingår i: Journal of Physics. - : IOP Publishing. - 0953-8984 .- 1361-648X. ; 15:3, s. 489-502
- Relaterad länk:
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http://www.iop.org/E...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- The shifts of the fundamental and optical bandgap energies as functions of dopant concentration in heavily n-type and p-type doped Si1-xGex (x less than or equal to 0.3) have been investigated theoretically. The band structure of the intrinsic crystal was described by the k . p-perturbation method, where the Kohn-Luttinger parameters were determined from a first-principles and full-potential band-structure calculation. The doping-induced effects on the bandgap were thereafter calculated using a zero-temperature Green function formalism within the random phase approximation and with a local field correction of Hubbard. We found only small effects on the bandgap energies due to variation of composition x. The calculated bandgap narrowing of Si and of Si0.82Ge0.18 were found to be in good agreement with photoluminescence measurements.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- heavily doped silicon
- bicmos technology
- electron-gas
- semiconductors
- ge
- photoluminescence
- layers
- alloys
- energy
- shifts
- Condensed matter physics
- Semiconductor physics
- Defects and diffusion
- Electronic structure
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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