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AdTech Ceramics - Ceramic Packages 1-24 LB

Two Colors, One Dopant

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Hank Hogan

A group of researchers from the Institute of Ion Beam Physics and Materials Research at Forschungszentrum Dresden-Rossendorf in Germany has discovered that the rare-earth element europium can do something rare. When used in a silicon wafer as a dopant, it makes a metal-oxide semiconductor electroluminescent device that changes color from red to blue when the drive current changes from low to high. Although the group had worked with rare-earth dopants before, institute director Manfred Helm said that the results surprised its members, noting that some changes of intensity within the various...Read full article

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    Published: July 2007
    ConsumerdopantsFeaturesMaterialsrare-earth element europiumsilicon wafer

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