Abstract
The band gap of the base of Si1-xGex strained-layer base heterojunction bipolar transistors has been investigated using minority-carrier transport measurements. We have found a band-gap reduction of 131 meV for a base of Si0.82Ge0.18, which is in reasonable agreement with theoretical calculations. Our measurements for a base of Si 0.85Ge0.15 show a band-gap reduction less than predicted, suggesting a reduction of strain in the structure.
Original language | English (US) |
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Pages (from-to) | 2707-2709 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 54 |
Issue number | 26 |
DOIs | |
State | Published - 1989 |
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)