TY - GEN
T1 - Numerical modeling of energy transport effects in AlGaAs/GaAs heterojunction bipolar transistors.
AU - Horio, K.
AU - Yanai, H.
PY - 1987
Y1 - 1987
N2 - A novel numerical model for AlGaAs/GaAs heterojunction bipolar transistors (HBTs) is proposed in which the transport of electron energy is included using hydrodynamic equations derived from the Boltzmann equation. This model can analyze nonequilibrium transport effects such as velocity overshoot, which the conventional static model cannot handle. It is shown that the importance of energy transport effects arises from the fact that the average electron energy deviates largely from the field-determined one. The velocity overshoot can occur in a graded-gap base and a collector depletion region, resulting in a much higher cutoff frequency than that predicted by the conventional model.
AB - A novel numerical model for AlGaAs/GaAs heterojunction bipolar transistors (HBTs) is proposed in which the transport of electron energy is included using hydrodynamic equations derived from the Boltzmann equation. This model can analyze nonequilibrium transport effects such as velocity overshoot, which the conventional static model cannot handle. It is shown that the importance of energy transport effects arises from the fact that the average electron energy deviates largely from the field-determined one. The velocity overshoot can occur in a graded-gap base and a collector depletion region, resulting in a much higher cutoff frequency than that predicted by the conventional model.
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U2 - 10.1109/nascod.1987.721185
DO - 10.1109/nascod.1987.721185
M3 - Conference contribution
AN - SCOPUS:0023526650
SN - 0906783720
SN - 9780906783726
T3 - NASECODE V Proc Fifth Int Conf Numer Anal Semicond Devices Integr Circuit
SP - 231
EP - 236
BT - NASECODE V Proc Fifth Int Conf Numer Anal Semicond Devices Integr Circuit
PB - Publ by IEEE
T2 - NASECODE V: Proceedings of the Fifth International Conference on the Numerical Analysis of Semiconductor Devices and Integrated Circuits
Y2 - 17 June 1987 through 19 June 1987
ER -