IODINE-CONTAINING FLUOROCARBON AND HYDROFLUOROCARBON COMPOUNDS FOR ETCHING SEMICONDUCTOR STRUCTURES

    公开(公告)号:US20210407817A1

    公开(公告)日:2021-12-30

    申请号:US16913696

    申请日:2020-06-26

    摘要: Disclosed are methods for etching a silicon-containing film to form a patterned structure, methods for reinforcing and/or strengthening and/or minimizing damage of a patterned mask layer while forming a patterned structure and methods for increasing etch resistance of a patterned mask layer in a process of forming a patterned structure. The methods include using an activated iodine-containing etching compound having the formula CnHxFyIz, wherein 4≤n≤10, 0≤x≤21, 0≤y≤21, and 1≤z≤4 as an etching gas. The activated iodine-containing etching compound produces iodine ions, which are implanted into the patterned hardmask layer, thereby strengthening the patterned mask layer.

    OXYGEN AND IODINE-CONTAINING HYDROFLUOROCARBON COMPOUND FOR ETCHING SEMICONDUCTOR STRUCTURES

    公开(公告)号:US20230197465A1

    公开(公告)日:2023-06-22

    申请号:US17555094

    申请日:2021-12-17

    IPC分类号: H01L21/311 H01L21/32

    摘要: A method comprises: introducing a vapor of an oxygen and iodine-containing etching compound into a chamber that contains a substrate having a silicon-containing film deposited thereon and a patterned mask layer deposited on the silicon-containing layer, wherein the oxygen and iodine-containing etching compound has the formula CnHxFyIzOe, wherein 0≤n≤10, 0≤x≤21, 0≤y≤21, 1≤z≤4 and 1≤e≤2; activating a plasma to produce an activated oxygen and iodine-containing etching compound; and allowing an etching reaction to proceed between the activated oxygen and iodine-containing etching compound and the silicon-containing film to selectively etch the silicon-containing film from the patterned mask layer, thereby forming a patterned structure.

    DEPOSITION OF IODINE-CONTAINING CARBON FILMS

    公开(公告)号:US20230193460A1

    公开(公告)日:2023-06-22

    申请号:US17555140

    申请日:2021-12-17

    摘要: A method for depositing an iodine-containing film on a substrate material comprises: exposing the substrate material to a vapor of a film-forming composition comprising an iodine-containing precursor having a formula of CaHxIyFz, wherein a=1-10, x≥0, y≥1, z≥0, x+y+z=a, 2a or 2a+2; provided that when a=1, x=2 and z=0, y is not equal to 2, and depositing the iodine-containing film formed by the iodine-containing precursor on the substrate material through a vapor deposition method. The method further comprises exposing the substrate material to a vapor of a co-reactant nitrogen-containing molecule having a general formula CxHyFzNH, where x=1-6, y=0-13, z=0-13, and a=1-2 or CxHyFzN—R1, where x=1-6, y=0-13, z=0-13, and R1 is a C1-C5 hydrocarbon.