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Typical spectra of PL (dotted lines) and PLE (solid lines) measured at from two QW samples with different barrier compositions. The inset shows the PL spectrum of sample B at .
Temperature dependence of the spectral positions of the PL maxima for two QWs with different barrier compositions.
Normalized PL spectra under different excitation energies. The excitation energies for curves 1–6 are 1.851, 1.378, 1.305, 1.265, 1.240, , respectively. The dotted straight lines denote the baselines for each spectrum. The inset highlights the emission band near of sample A.
Temperature dependence of integrated PL intensity for two QWs with different barrier compositions.
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