Bipolar transistor and method for producing the same

Bipolar transistor and method for producing the same

A bipolar transistor comprising a subcollector layer, and a collector layer on the subcollector layer. The collector layer includes a plurality of doped layers. The plurality of doped layers includes a first doped layer that has a highest impurity concentration thereamong and is on a side of or in c...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Umemoto, Yasunari, Koya, Shigeki, Kurokawa, Atsushi
Format: Patent
Sprache:eng
Schlagworte:
BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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Beschreibung
Zusammenfassung:A bipolar transistor comprising a subcollector layer, and a collector layer on the subcollector layer. The collector layer includes a plurality of doped layers. The plurality of doped layers includes a first doped layer that has a highest impurity concentration thereamong and is on a side of or in contact with the subcollector layer. Also, the first doped layer includes a portion that extends beyond at least one edge of the plurality of doped layers in a cross-sectional view.