Self-aligned SiGe NPN with improved ESD robustness using wide emitter polysilicon extension

摘要

A semiconductor bipolar transistor structure having improved electrostatic discharge (ESD) robustness is provided as well as a method of fabricating the same. Specifically, the inventive semiconductor structure a semiconductor structure comprises a bipolar transistor comprising a lightly doped intrinsic base; a heavily doped extrinsic base adjacent to said intrinsic base, a heavily doped/lightly doped base doping transition edge therebetween, said heavily doped/lightly doped base doping transition edge defined by an edge of a window; and a silicide region extending on said extrinsic base, wherein said silicide region is completely outside said window.