公开(公告)号：US06358761B1

公开(公告)日：2002-03-19

申请号：US09396521

申请日：1999-09-15

Applicant: Hui-Ju Yoo ,  Szu-An Wu ,  Cheng-Kun Lin ,  Shiow-Jye Jenq

Inventor： Hui-Ju Yoo ,  Szu-An Wu ,  Cheng-Kun Lin ,  Shiow-Jye Jenq

IPC: H01L21265

CPC classification number: G01N27/041

Abstract: A method and means for detection of oxidizing contamination in acid etching baths employed to etch silicon oxide layers from silicon substrates employed in silicon integrated circuit microelectronics fabrications. There is provided a silicon substrate having within a doped region formed employing ion implantation. The silicon substrate is immersed within a buffered oxide etch (BOE) acid bath, wherein the presence of an oxidizing contaminant correlates with an increase in the resistance of the doped region upon the removal of any silicon oxide layer on the silicon surface.

Abstract translation: 用于检测酸蚀刻液中的氧化污染物的方法和装置，其用于从用于硅集成电路微电子学制造的硅衬底上蚀刻氧化硅层。 提供了在采用离子注入形成的掺杂区域内的硅衬底。 将硅衬底浸入缓冲氧化物蚀刻（BOE）酸浴中，其中氧化污染物的存在与去除硅表面上的任何氧化硅层时的掺杂区域的电阻的增加相关。