Chemical vapor deposition processes using ruthenium precursor and reducing gas

    公开(公告)号:US11371138B2

    公开(公告)日:2022-06-28

    申请号:US16673470

    申请日:2019-11-04

    Applicant: ENTEGRIS, INC.

    Abstract: Chemical vapor deposition (CVD) processes which use a ruthenium precursor of formula R1R2Ru(0), wherein R1 is an aryl group-containing ligand, and R2 is a diene group-containing ligand and a reducing gas a described. The CVD can include oxygen after an initial deposition period using the ruthenium precursor and reducing gas. The method can provide selective Ru deposition on conductive materials while minimizing deposition on non-conductive or less conductive materials. Further, the subsequent use of oxygen can significantly improve deposition rate while minimizing or eliminating oxidative damage of the substrate material. The method can be used to form Ru-containing layers on integrated circuits and other microelectronic devices.

    CHEMICAL VAPOR DEPOSITION PROCESSES USING RUTHENIUM PRECURSOR AND REDUCING GAS

    公开(公告)号:US20220267895A1

    公开(公告)日:2022-08-25

    申请号:US17744240

    申请日:2022-05-13

    Applicant: ENTEGRIS, INC.

    Abstract: Chemical vapor deposition (CVD) processes which use a ruthenium precursor of formula R1R2Ru(0), wherein R1 is an aryl group-containing ligand, and R2 is a diene group-containing ligand and a reducing gas a described. The CVD can include oxygen after an initial deposition period using the ruthenium precursor and reducing gas. The method can provide selective Ru deposition on conductive materials while minimizing deposition on non-conductive or less conductive materials. Further, the subsequent use of oxygen can significantly improve deposition rate while minimizing or eliminating oxidative damage of the substrate material. The method can be used to form Ru-containing layers on integrated circuits and other microelectronic devices.

Patent Agency Ranking