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Linear optical resp...
Linear optical response of Si1-xGex compounds
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Da Silva, A. F. (författare)
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Dantas, N. S. (författare)
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Ahuja, R. (författare)
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Pepe, I. (författare)
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Da Silva Jr., E. F. (författare)
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- Nur, Omer, 1959 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)
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- Willander, Magnus, 1948 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för fysik (GU),Department of Physics (GU)
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- Persson, Clas (författare)
- KTH,Tillämpad materialfysik
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(creator_code:org_t)
- SPIE - International Society for Optical Engineering, 2005
- 2005
- Engelska.
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Ingår i: Quantum Sensing and Nanophotonic Devices II. - : SPIE - International Society for Optical Engineering. - 081945706X ; 5732:1, s. 556-564
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://gup.ub.gu.se...
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Abstract
Ämnesord
Stäng
- Si1-xGex is a good candidate as a substitute material for Si in a low-power and high-speed semiconductor device technologies. Optical devices, such as heterojunction bipolar transistors, are already in industrial production. The samples are grown on Si(001) with both n-and p-type impurities and with different Ge concentrations. The linear optical response of Si 1-x Gex is investigated theoretically using a full-potential linearized augmented plane wave method with respect to composition x. The calculated real and imaginary parts of the dielectric function ε e(ω) = ε1(ω) + iε 2(ω) were found to be in good agreement with recent spectroscopic ellipsometry measurements performed by Bahng et al., J. Phys.: Condens. Matter 13, 777 (2001). We also perform absorption measurements for different type of samples showing the variation of energy gaps as a function of Ge concentrations.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- Ellipsometry
- Germanium
- Heterojunction bipolar transistors
- Light absorption
- Optical devices
- Semiconductor devices
- Dielectric functions
- Ge concentrations
- Linear optical response
- Plane wave methods
- Semiconducting silicon compounds
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- kon (ämneskategori)
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