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The photoluminescence of CdTe/Cd 1-x Zn x Te (x approximately=0.1) strained-layer heterostructures has been studied at 1.8 K as a function of hydrostatic pressure up to 2.7 GPa. The pressure dependence of transitions related to the substrate has been measured separately, and this enables a direct determination of the hydrostatic deformation potential a=-3.55 eV for bulk CdTe. The pressure coefficients of the heavy hole direct and of the light hole indirect transitions are found to be similar and slightly lower than those of bulk CdTe. The weak influence of the confinement effect on the structure could explain the results.
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Zigone et al. (1991) studied this question.
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