Offset reduction by modulation doping in abrupt heterojunction bipolar transistors

Autor: R. Azoulay, Alain Sibille, J. F. Palmier, J. C. Esnault
Rok vydání: 1989
Předmět:
Zdroj: Journal of Applied Physics. 66:442-444
ISSN: 1089-7550
0021-8979
DOI: 10.1063/1.343844
Popis: Conventional heterojunction bipolar transistors exhibit large δVCE offset voltages in common emitter characteristics: We experimentally show that the replacement of the large gap emitter by a thin modulation‐doped GaAlAs barrier in an otherwise all GaAs structure results in a large reduction of the offset, without degradation of the gain.
Databáze: OpenAIRE