Abstract:Investigation of excitonic lines in differential surface photovoltage (DSPV) spectra of p-type (Be) δ-doped GaAs/AlAs multiple quantum well (MQW) structures is reported. From the lineshape analysis of the DSPV spectra, the energies and line broadening parameters for a large number of QW related excitonic transitions were determined. It is found that transition energies are in a good agreement with calculations carried out within the envelope function approximation taking into account the nonparabolicity of ene… Show more
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