Zx. Xiao et Tl. Wei, A UNIFIED MODEL FOR THE VERTICAL BASE WIDENING EFFECT IN SILICON BIPOLAR-TRANSISTOR AT 77 AND 300 K, International journal of electronics, 82(1), 1997, pp. 1-7
In this paper, a unified model for the vertical base widening effect a
nd the Kirk current density of a silicon bipolar transistor is propose
d which is appropriate for any electric field intensity at low tempera
ture.