Optical beam-induced scattering mode of mid-IR laser microscopy: a method for defect investigation in near-surface and near-interface regions of bulk semiconductors

Physics – Condensed Matter – Materials Science

Scientific paper

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DRIP-VI, 1995

Scientific paper

This paper presents a new technique of optical beam-induced scattering of mid-IR-laser radiation, which is a special mode of the recently developed scanning mid-IR-laser microscopy. The technique in its present form is designed for investigation of large-scale recombination-active defects in near-surface and near-interface regions of semiconductor wafers. However, it can be easily modified for the defect investigations in the crystal bulk. Being in many respects analogous to EBIC, the present technique has some indisputable advantages, which enable its application for both non-destructive laboratory investigations and quality monitoring in the industry.

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