Thin-film semiconductor epitaxial substrate having boron...

Details Thin-film semiconductor epitaxial substrate having boron... Thin-film semiconductor epitaxial substrate having boron...

2005-07-05

2005-07-05

Mai, Anh Duy (Department: 2814)

Active solid-state devices (e.g., transistors, solid-state diode

Heterojunction device

Bipolar transistor

C257S200000

Reexamination Certificate

active

06914274

ABSTRACT:
A thin-film semiconductor epitaxial substrate comprising a substrate and a sub-collector layer, a collector layer, a base layer and an emitter layer(s) which are formed as thin-film semiconductor epitaxial layers on said substrate, wherein boron (B) added is present in at least a part of a layer portion comprising said sub-collector layer and said collector layer.

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