Article ID Journal Published Year Pages File Type
616542 Tribology International 2008 5 Pages PDF
Abstract

Photo-induced current (PIC) is produced from excited electrons and holes in a semiconductor by irradiation of laser light. Since the intensity of the PIC depends on the traveling distance of carriers, measuring current between a metal and a semiconductor can be utilized for analyzing electrical contact. The spatial resolution of the PIC depends on the attenuated length and the thickness of the semiconductor, and its intensity is proportional to the contact pressure. By scanning laser light, we obtained two-dimensional distribution maps of electrical contacts between solids.

Related Topics
Physical Sciences and Engineering Chemical Engineering Colloid and Surface Chemistry
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