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Influence of the multilayer system on the structure and photoluminescence of GeOx thin films
2011
Amorphous GeOx/SiO2 multilayers (1germanium aggregates. For Ta≥ 400°C, the photoluminescence band around 1eV attributed to confinement effect in amorphous germanium aggregates was observed. Comparison of the luminescence in multilayer and GeOx thin film showed that in multilayer, although the control of the nanocrystals size isn't complete, the SiO2 barriers tend to enhance the intensity and reduce FWHM of the luminescence bands. This means that the confinement effect in the germanium aggregates in GeOx matrix is enhanced in multilayer system.
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