Carbon-beryllium combinationally doped semiconductor
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United States of America Patent
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Nov 5, 2013
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app pub date -
Aug 13, 2011
filing date -
Aug 13, 2011
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Abstract
A combinationally doped semiconductor layer, a double heterojunction bipolar transistor (DHBT) including a combinationally doped semiconductor layer, and a method of making a combinationally doped semiconductor layer employ a combination of carbon and beryllium doping. The combinationally doped semiconductor layer includes a first sublayer of a semiconductor material doped substantially with beryllium and a second sublayer of the semiconductor material doped substantially with carbon. The DHBT includes a carbon-beryllium combinationally doped semiconductor layer as a base layer. The method of making a combinationally doped semiconductor layer includes growing a first sublayer of the semiconductor layer, the first sublayer being doped substantially with beryllium and growing a second sublayer of the semiconductor layer, the second sublayer being doped substantially with carbon.
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