公开(公告)号：US20230197818A1

公开(公告)日：2023-06-22

申请号：US17559342

申请日：2021-12-22

Applicant: Intel Corporation

Inventor： Nitesh Kumar ,  William Hsu ,  Mohammad Hasan ,  Ritesh Das ,  Vivek Thirtha ,  Biswajeet Guha ,  Oleg Golonzka

IPC: H01L29/423 ,  H01L29/786 ,  H01L29/66 ,  H01L21/8234

CPC classification number: H01L29/42392 ,  H01L29/78618 ,  H01L29/78696 ,  H01L29/66742 ,  H01L21/823412 ,  H01L21/823418

Abstract: Methods, integrated circuit devices, and systems are discussed related to combining source and drain etch, cavity spacer formation, and source and drain semiconductor growth into a single lithographic processing step in gate-all-around transistors. Such combined processes are performed separately for NMOS and PMOS gate-all-around transistors by implementing selective masking techniques. The resulting transistor structures have improved cavity spacer integrity and contact to gate isolation.