The authors report a novel contact design and technology for heterojunction bipolar transistors. The design consists of a base (B)-emitter (E)-collector (C) configuration with a T-shaped base. This configuration enables coplanar access to the emitter from both ground lines without air-bridge crossings. This leads to a very fast HBT fabrication procedure consisting of a double self-alignment process and only two metallisation steps
Published in:
Electronics Letters
(Volume:34
,
Issue:
19
)
Date of Publication: 17 Sep 1998