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Energy diagrams of the three different QW/barrier structures.
PL spectra of the three samples at .
PL spectra of sample v0397 at various temperatures. The inset plots the dependence of the integrated PL intensity on the reciprocal of temperature; the solid curve is the corresponding best fit based on Eq. (1).
PL peak energy as a function of temperature. The solid curves represent the best fits according to the Varshni equation.
Parameters of Eq. (1) obtained with free fitting. The corresponding values obtained with a constrained fitting are listed in the parentheses.
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