HETEROJUNCTION BIPOLAR TRANSISTOR HAVING WIDE BANDGAP, LOW INTERDIFFUSION BASE-EMITTER JUNCTION
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机译:异质结双极晶体管具有宽带隙,低扩散基极-发射极结
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摘要
A heterojunction bipolar transistor (20) is provided with a silicon (Si) base region (34) that forms a semiconductor junction with a multilayer emitter (38) having a thin gallium arsenide (GaAs) emitter layer (36) proximate the base region (34) and a distal gallium phosphide emitter layer (40). The GaAs emitter layer (36) is sufficiently thin, preferably less than 200 Å, so as to be coherently strained.
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