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Nitrogen Splits GaInAs Conduction Band

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Researchers at the Lawrence Berkeley National Laboratory reported that the presence of a nitrogen band formed a few tenths of an electron volt above the lowest energy conduction band in a gallium indium arsenide alloy material. Although the addition of a little nitrogen seems to decrease the alloy's bandgap and to offer the promise of more efficient conduction, it also creates a lower band that does not promote electron mobility. As a result, the electrons don't travel far enough to contribute to the output of electric current. A low-bandgap alloy could respond more efficiently to...Read full article

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    Published: August 1999
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