Browsing Τμήμα Φυσικής / Department of Physics by Subject "Grain boundaries"
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Article
Influence of grain size on ultrafast carrier dynamics in thin nanocrystalline silicon films
(2007)The ultrafast carrier dynamics in thin nanocrystalline silicon films (10 and 20 nm thick) on quartz over a broad spectral range using optical pumping at a moderate fluence of 2.5 mJ cm2 were studied. The films were composed ...
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Article
Time-resolved ultrafast carrier dynamics in as-grown nanocrystalline silicon films: The effect of film thickness and grain boundaries
(2008)In this letter, we have studied transient photoinduced absorption in as-grown nanocrystallinc silicon films with thickness varied from 5 to 30 nm. Effects of quantum confinement (QC) in z-direction and grain boundary ...
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Article
Transient photoinduced absorption in ultrathin as-grown nanocrystalline silicon films
(2008)We have studied ultrafast carrier dynamics in nanocrystalline silicon films with thickness of a few nanometers where boundary-related states and quantum confinement play an important role. Transient non-degenerated ...