The absorption properties of a series ofGaAs₁₋ₓ Biₓlayers with~6%Bi have been systematically investigated by measuring photocurrent spectra in p-i-n diode structures grown by molecular beam epitaxy. TheGaAs₁₋ₓ Biₓlayers varied in thickness from 50 to 350 nm and showed a photoresponse in the near-infrared up to almost 1.3μ m. The absorption coefficients of the layers were obtained from the responsivity data. Below the band gap, the absorption coefficients showed an exponential dependence on the photon energy (Urbach tailing).
No takes yet. Share an insight, caveat, or question.
Hunter et al. (2012) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: