Spectroscopic ellipsometric study of Ge nanocrystals embedded in SiO 2 using parametric models
Date
2008-05
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Abstract
Ge-rich SiO2 layers on top of Si substrates were deposited using plasma enhanced chemical vapour deposition. Ge nanocrystals embedded in the SiO2 layers were formed by high temperature annealing. The samples were measured and evaluated by spectroscopic ellipsometry. Effective medium theory (EMT) and parametric semiconductor models have been used to model the dielectric function of the layers. Systematic dependences of the layer thickness and the oscillator parameters have been found on the annealing temperature (nanocrystal size).
Source Title
Physica Status Solidi (C) Current Topics in Solid State Physics
Publisher
Wiley
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Keywords
Annealing temperatures, Dielectric functions, Effective medium theories, Ge nanocrystals, High-temperature annealing, Layer thickness, Nanocrystal sizes, Oscillator parameters, Parametric models, Plasma enhanced chemical vapour deposition, Semiconductor model, Si substrates, Germanium, Plasma deposition, Silicon compounds, Spectroscopic ellipsometry, Nanocrystals
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Language
English