Patent ID: 8916446
Filing Date: 2014-12-23
Classification: G06F,H01L

Abstract:
1. A method of fabricating a bipolar junction transistor, the method comprising: forming an intrinsic base layer; forming a plurality of sacrificial emitter pedestals on the intrinsic base layer; depositing an extrinsic base layer on the intrinsic base layer, the extrinsic base layer in a self-aligned relationship with the sacrificial emitter pedestals; forming a silicide layer on the extrinsic base layer such that a first portion of the silicide layer bridges a gap between adjacent pairs of the sacrificial emitter pedestals; removing the sacrificial emitter pedestals to define emitter windows extending through the silicide layer and the extrinsic base layer to the intrinsic base layer; and forming a plurality of emitters of the bipolar junction transistor with one of the emitters disposed in each of the emitter windows.