Physics – Condensed Matter – Materials Science
Scientific paper
2008-12-26
Physics
Condensed Matter
Materials Science
9 pages, 4 fugures
Scientific paper
A 2D layer of spherical, crystalline Ge nanodots embedded in SiO2 was formed by low pressure chemical vapour deposition combined with furnace oxidation and rapid thermal annealing. The samples were characterized structurally by using transmission electron microscopy and rutherford back scattering spectrometry, as well as electrically by measuring CV and IV characteristics. It was found that formation of a high density Ge dots took place due to oxidation induced Ge segregation. The dots are situated in the SiO2 on the average distance 5 nm from the substrate. Strong evidence of charge storage effect in the crystalline Ge nanodot layer is demonstrated by the hysteresis behavior of the high frequency CV curves.
Gaiduk Peter I.
Novikau Andrei G.
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