公开(公告)号：WO03001584A8

公开(公告)日：2004-05-27

申请号：PCT/US0219789

申请日：2002-06-19

Applicant: IBM

Inventor： JAGANNATHAN BASANTH ,  JENG SHWU-JEN ,  JOHNSON JEFFREY B ,  JOHNSON ROBB A ,  LANZEROTTI LOUIS D ,  STEIN KENNETH J ,  SUBBANNA SESHADRI

IPC: H01L21/331 ,  H01L21/8249 ,  H01L29/737 ,  H01L31/11

CPC classification number: H01L29/66242 ,  H01L21/8249 ,  H01L29/7378

Abstract: A method for making a non-self-aligned, heterojunction bipolar transistor includes forming extrinsic base regions (70) with a PFET source/drain implant aligned with the polysilicon in an emitter stack but which are not directly aligned with an emitter opening defined in that stack. This is achieved by making the emitter pedestal (66) wider than the emitter opening. This advantageously removes the dependency of alignment between the extrinsic base regions and the emitter opening, thereby resulting in fewer process steps, reduced thermal cycles, and improved speed.

Abstract translation: 一种用于制造非自对准的异质结双极晶体管的方法包括：在发射极堆叠中形成具有与多晶硅对准的PFET源极/漏极注入的非本征基极区域（70），但并不直接对准在该区域中限定的发射极开口 叠加。 这通过使发射器基座（66）比发射器开口更宽来实现。 这有利地消除了非本征基区和发射极开口之间的对准的依赖性，从而导致更少的工艺步骤，减少的热循环和改进的速度。