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- W2045377549 abstract "We have studied the photoluminescence (PL) emission of various Cd-rich Hg1-xCdxTe crystals, including the 1.3 μm alloy composition (x ⋍ 0.7). They were either bulk crystals grown and purified by the travelling heater method or layers grown by liquid phase epitaxy on CdTe substrates. In undoped materials, the low temperature luminescence of each sample (1.3 μm range) consists of one set of bands: a high energy band, labelled “A”, followed by LO phonon replicas. We have analysed the PL spectra of a series of alloys with x ranging between 1 and 0.7; using a new revised relationship for the variation Eg (x,T) in this composition range, we are led to assign the “A” band to a mixing of excitonic lines broadened by the effects of disorder. We have also measured the PL spectrum of In-doped Hg0.3Ce0.7Te crystals grown by THM and presenting a low electronic concentration (n300 = 2×1014 cm-3). In this case, we observed clearly, and for the first time for this composition, emission arising from excitons and from donor-acceptor pairs transitions. This result confirms our conclusion on the excitonic nature of the “A” band." @default.
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- W2045377549 date "1985-07-01" @default.
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- W2045377549 title "Photoluminescence of Cd-rich Hg1−xCdxTe alloys (0.7<x<1)" @default.
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- W2045377549 doi "https://doi.org/10.1016/0022-0248(85)90155-1" @default.
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