4.6 Article

The radial distribution of defects in a percolation path

Journal

APPLIED PHYSICS LETTERS
Volume 93, Issue 26, Pages -

Publisher

AMER INST PHYSICS
DOI: 10.1063/1.3056659

Keywords

conduction bands; electric breakdown; percolation; scanning electron microscopy; silicon compounds; transmission electron microscopy; vacancies (crystal)

Funding

  1. Ministry of Education (MOE) [T206B1205]
  2. NTU [RGM 12/07]

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Our results show that the defect distribution within a nanometer size percolation path is nonuniform. The defects, which are shown as oxygen vacancies, spread out radially from the center of the percolation path. The conduction band edges of the defective oxide are lowered for 0.14-0.78 eV when the Si-O composition changes from SiO1.76 to SiO0.7.

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