Abstract
Near-field photoluminescence spectroscopy of a GaInNAs quantum well with a spatial resolution of 50–150 nm (λ/20-λ/8) was performed to visualize the bandgap fluctuation, which reflects the nonuniform distribution of N and In atoms. We quantitatively estimate the real-space potential profile and fluctuation of N concentration in combination with numerically solving Schrodinger equation.
© 2007 IEEE
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