公开(公告)号：US20150364568A1

公开(公告)日：2015-12-17

申请号：US14341838

申请日：2014-07-27

Applicant: UNITED MICROELECTRONICS CORP.

Inventor： Yen-Liang Wu ,  Chung-Fu Chang ,  Yu-Hsiang Hung ,  Ssu-I Fu ,  Man-Ling Lu ,  Chia-Jong Liu ,  Wen-Jiun Shen ,  Yi-Wei Chen

IPC: H01L29/66

CPC classification number: H01L29/6656 ,  H01L21/26586 ,  H01L29/6659 ,  H01L29/66636 ,  H01L29/7834

Abstract: A fabrication method of a semiconductor structure includes the following steps. First of all, a gate structure is provided on a substrate, and a first material layer is formed on the substrate and the gate structure. Next, boron dopant is implanted to the substrate, at two sides of the gate structure, to form a first doped region, and P type conductive dopant is implanted to the substrate, at the two sides of the gate structure, to form a second doped region. As following, a second material layer is formed on the first material layer. Finally, the second material layer, the first material layer and the substrate at the two sides of the gate structure are etched sequentially, and a recess is formed in the substrate, at the two sides of the gate structure, wherein the recess is positioned within the first doped region.

Abstract translation: 半导体结构的制造方法包括以下步骤。 首先，在基板上设置栅极结构，在基板和栅极结构上形成第一材料层。 接下来，在栅极结构的两侧将硼掺杂剂注入到衬底中以形成第一掺杂区，并且在栅极结构的两侧将P型导电掺杂剂注入到衬底中，以形成第二掺杂区 地区。 如下，在第一材料层上形成第二材料层。 最后，栅极结构的两侧的第二材料层，第一材料层和衬底被顺序地蚀刻，并且在栅极结构的两侧在衬底中形成凹部，其中凹部位于 第一掺杂区域。