BSI BS ISO 14706:2014

Current Revision
Surface chemical analysis. Determination of surface elemental contamination on silicon wafers by total-reflection X-ray fluorescence (TXRF) spectroscopy

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BSI BS ISO 14706:2014

Surface chemical analysis. Determination of surface elemental contamination on silicon wafers by total-reflection X-ray fluorescence (TXRF) spectroscopy

PUBLISH DATE 2014
PAGES 36
BSI BS ISO 14706:2014

This International Standard specifies a TXRF method for the measurement of the atomic surface density of elemental contamination on chemomechanically polished or epitaxial silicon wafer surfaces.

The method is applicable to the following:

  • elements of atomic number from 16 (S) to 92 (U);

  • contamination elements with atomic surface densities from 1 × 1010 atoms/cm2 to 1 × 1014 atoms/cm2;

  • contamination elements with atomic surface densities from 5 × 108 atoms/cm2 to 5 × 1012 atoms/cm2 using a VPD (vapour-phase decomposition) specimen preparation method (see 3.4).

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