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Totally organic electronics.

Totally organic electronics

Once regarded as little more than laboratory curiosities, semiconductors fashioned from organic molecules are starting to make an impression in an electronic world dominated by silicon-based circuitry. Aided by recent progress in preparing organic semiconductors with well-defined electronic characteristics, French researchers have now constructed and tested the first transistor fabricated entirely from organic materials.

The novel "field-effect" transistor consists of a thin film, made of a short-molecule analog of a semiconducting polymer known as polythiophene, deposited on a polymer base. A polymeric insulating layer separates the transistor's active parts from its electrodes. This transistor's most remarkable feature is its flexibilit. It functions even when bent out of shape.

Although the performance of the organic transistor lags behind that of silicon-based devices, further research may bring it closer to practical applications. "We think we have a new, very promising class of organic semiconductors," says Francis Garnier, who developed the new transistor with co-workers at the CNRS Laboratoire des Materiaux Moleculaires in France.
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Title Annotation:semiconductors fashioned from organic molecules
Author:Peterson, Ivars
Publication:Science News
Date:Mar 30, 1991
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