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IR reflectance spectra of (, 0.15, 0.30, and 0.54) thin films under normal incidence. The dashed curves show the theoretical reflectance.
Variation in the energy of coupled modes and with . The energies of the coupled modes and plasmon for InN film and are shown by the filled circles. Two straight lines in each panel represent the energies of and for the corresponding film. Inset shows variation in the broadening parameters, , , and , with .
(a) UV reflectance from films showing the critical point transitions (shown by arrows) and (b) variation in critical point energies of alloy as a function of . The solid lines show the fitted data.
Electronic and optical properties of thin films for different values of .
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