Abstract
Raman scattering from InAs nanocrystals embedded in SiO2 thin films has been measured and studied. Raman spectra of InAs nanocrystals have a similar feature with that of bulk InAs crystal. Broadened and red-shifted Raman scattering peaks were observed from the nanocrystals; this has been attributed to the phonon confinement effect. A compressive stress in the interface between InAs nanocrystals and the SiO2 matrix was also taken into account to interpret the red shift.
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