Abstract
We report for the first time the observation of strongly linearly polarized luminescence from CdTe epitaxial layers grown by photoassisted molecular beam epitaxy. Strong linear polarization was detected in the acceptor-bound exciton spectral region and in the pair band regions (1.54–1.56 eV and 1.46–1.48 eV). The linear polarization is believed to be due to the preferential alignment of complex centers along one of the [110] lattice directions. The cause of the preferential orientation of these complex centers is the inequivalence during the planar growth on the (100) surface of the [110] and [1̄10] directions in the zinc-blende lattice.
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