Electrical characterization of semiconductor materials

Details Electrical characterization of semiconductor materials Electrical characterization of semiconductor materials

2011-03-01

2011-03-01

Hollington, Jermele M (Department: 2858)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

Reexamination Certificate

active

07898280

ABSTRACT:
A system and method for characterizing electronic properties of a semiconductor sample includes illuminating the surface of the semiconductor sample with a pulse of light, measuring a photoconductance decay in the semiconductor sample after the cessation of the first pulse of light, and analyzing the photoconductance decay. The electronic properties include properties associated with at least one of the bulk of the semiconductor sample and the surface of the semiconductor sample. The pulse of light has a predetermined duration and photon energy higher than energy gap of the semiconductor. The analyzing step determines a first component of the photoconductance decay substantially associated with point imperfections in the semiconductor sample and at least one second component of the photoconductance decay substantially associated with extended imperfections in the semiconductor sample.

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