Optimization of selected parameters of SiGe HBT transistors
DOI:
https://doi.org/10.26636/jtit.2000.3-4.31Keywords:
heterojunction bipolar transistor, base transit time, current gainAbstract
SiGe-base HBTs with Gaussian doping distribution are modeled including the effect of the drift field and variable Ge concentration in the base on the diffusion coefficient. Two different Ge distributions in the base are considered: a triangular one and a box one the patterned substrates suffered from a high loading effect demanding an accurate calibration.
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