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Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)

Editor
Y. Tao
Y. Tao
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C. Ma
C. Ma
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ISBN:
9780791802908
No. of Pages:
1200
Publisher:
ASME Press
Publication date:
2009

Spectral reflectance of GaAs from infrared (IR) to ultraviolet (UV) bands is calculated from first principles. We first calculate the spectral dielectric function which is determined by the response of GaAs to the external electromagnetic field. Two mechanisms exist for different wavelengths, namely, phonon response in the far-IR region and the electronic absorption in the near-IR to UV region. With plane-wave pseudopotential method, we determined the dielectric function of GaAs with the the initial structure as the only input. For the far-IR region, phonon calculations are carried out. By analyzing the phonon modes, low-frequency dielectric constant is calculated using the...

Abstract
Nomenclature
1 Introduction
2 Theory and Methods
3 Results and Discussion
4 Discussions and Conclusions
Acknowledgement
References
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