Size and spatial homogeneity of SiGe quantum dots in amorphous silica matrix

作者:Buljan Maja*; Pinto Sara R C; Kashtiban Reza J; Rolo Anabela G; Chahboun Adil; Bangert Ursel; Levichev Sergey; Holy Vaclav; Gomes Maria J M
来源:Journal of Applied Physics, 2009, 106(8): 084319.
DOI:10.1063/1.3248373

摘要

In this paper, we present a study of structural properties of SiGe quantum dots formed in amorphous silica matrix by magnetron sputtering technique. We investigate deposition conditions leading to the formation of dense and uniformly sized quantum dots, distributed homogeneously in the matrix. X-ray and Raman spectroscopy were used to estimate the Si content. A detailed analysis based on grazing incidence small angle x-ray scattering revealed the influence of the deposition conditions on quantum dot sizes, size distributions, spatial arrangement, and concentration of quantum dots in the matrix, as well as the Si: Ge content.

  • 出版日期2009-10-15