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Proceedings Paper

Carbon fiber polymer-matrix structural composite as a semiconductor
Author(s): Deborah D. L. Chung; Shoukai Wang
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Paper Abstract

An epoxy-matrix composite with continuous crossply carbon fibers was found to be a semiconductor in the through- thickness direction, with a tunable energy gap of 10-2-10-1 eV. The higher the pressure during composite fabrication by lamination, the higher the interlaminar stress and the greater the energy gap, which is the activation energy for electron jumping from one lamina to the adjacent one in the composite. The semiconducting behavior involves the contact electrical resistivity between adjacent laminae in the composite decreasing reversibly with increasing temperature. The concept of optoelectronic and electronic devices made from carbon fiber polymer-matrix composites is provided. Devices include solar cells, light emitting diodes, lasers, infrared detectors and transistors.Thus, a new dimension is added to smart structures and a new field of electronics is born.

Paper Details

Date Published: 21 July 1998
PDF: 9 pages
Proc. SPIE 3330, Smart Structures and Materials 1998: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, (21 July 1998); doi: 10.1117/12.316997
Show Author Affiliations
Deborah D. L. Chung, SUNY/Buffalo (United States)
Shoukai Wang, SUNY/Buffalo (United States)


Published in SPIE Proceedings Vol. 3330:
Smart Structures and Materials 1998: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials
Richard O. Claus; William B. Spillman, Editor(s)

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