Below-band-gap absorption in undoped GaAs at elevated temperatures
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DOI: 10.1016/j.optmat.2016.11.028
Abstract: Abstract This paper presents results of measurements of optical absorption in undoped epitaxial GaAs for photon energies below the band gap. Absorption spectra were determined from transmission spectra of a thin GaAs layer at several… read more here.
Keywords: absorption; band gap; gap absorption; gaas ... See more keywords
Sub-band-gap absorption in Ga 2 O 3
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DOI: 10.1063/1.5001323
Abstract: β-Ga2O3 is a transparent conducting oxide that, due to its large bandgap of 4.8 eV, exhibits transparency into the UV. However, the free carriers that enable the conductivity can absorb light. We study the effect of… read more here.
Keywords: absorption; band gap; gap absorption; band ... See more keywords
Comprehensive modeling of the band gap and absorption spectrum of BiVO4
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DOI: 10.1103/physrevmaterials.1.022401
Abstract: We present first-principles calculations of the electronic structure of BiVO4 at various levels of theory. In the calculations, we take into account a series of effects that affect the band gap, i.e., spin-orbit coupling, electron-hole… read more here.
Keywords: band; absorption spectrum; band gap; gap absorption ... See more keywords