Infrared photoluminescence has been studied in a thin (92 Å) PbTe-PbEuTeSe multiquantum well structure. The spectra show good agreement with calculations for the n=1 quantum well transition for a simple two-dimensional electron-hole gas with low-energy broadening consistent with monolayer well width fluctuations. From the measured effective electron temperatures we estimate that the electron-longitudinal optical phonon interaction is significantly reduced in comparison with bulk PbTe.
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Goltsos et al. (1985) studied this question.
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