Abstract:
One aspect of the invention provides a method of forming a semiconductor device (100). One aspect includes forming transistors (120, 125) on a semiconductor substrate (105), forming a first interlevel dielectric layer (165) over the transistors (120, 125), and forming metal interconnects (170, 175) within the first interlevel dielectric layer (165). A carbon-containing gas is used to form a silicon carbon nitride (SiCN) layer (180) over the metal interconnects (170, 175) and the first interlevel dielectric layer (165) within a deposition tool. An adhesion layer (185) is formed on the SiCN layer (180), within the deposition tool, by discontinuing a flow of the carbon-containing gas within the deposition chamber. A second interlevel dielectric layer (190) is formed over the adhesion layer (185).
Abstract:
A method of forming a semiconductor device including forming a low-k dielectric material over a substrate, depositing a liner on a portion of the low-k dielectric material, and exposing the liner to a plasma. The method also includes depositing a layer over the liner.
Abstract:
A method of forming a semiconductor device including forming a low-k dielectric material over a substrate, depositing a liner on a portion of the low-k dielectric material, and exposing the liner to a plasma. The method also includes depositing a layer over the liner.
Abstract:
A trench and via structure is formed in a low k dielectric layer (100) formed over a silicon substrate (10). Super critical CO2 and a first silylization agent are used to form a chemically bonded high density surface layer (160). Silanol species are removed from the low k dielectric layer (100) using super critical CO2 and a second silylization agent. A barrier layer (190) and copper (200) are used to fill the trench and via structure.
Abstract:
A method of manufacturing a semiconductor device includes the steps of providing a semiconductor substrate (202), forming a dielectric layer (204) over the semiconductor substrate (202), and etching a trench or a via (206) in the dielectric layer (204) to expose a portion of the surface of the semiconductor substrate (202). The method also includes the step of forming a conductive layer (212, 220) within in the trench or the via (206). The method further includes the steps of polishing a portion of the conductive layer (220) and annealing the conductive layer (212, 220) at a predetermined temperature. Moreover, the conductive layer (212, 220) also includes a dopant, and the dopant diffuses substantially to the surface of the top side of the conductive layer (212, 220) to form a dopant oxide layer (212a, 220a) when the conductive layer (212, 220) is annealed at the predetermined temperature and the dopant is exposed to oxygen.
Abstract:
A carbon hardmask (122) for etching hard-to-etch materials (110/112/114) such as Pt, Ir, Ru, IrO2, RuO2, BST, PZT, SBT, FeNi, and FeNiCo and other used in DRAMs, FeRAMs, and magnetic storage devices. Chemically assisted physical sputter etching using argon and limited or no oxygen may be used to etch the hard-to-etch materials (110/112/114) with high selectivity to the carbon hardmask (122).
Abstract:
An integrated circuit with an intermetal level dielectric (IMD) including an organic-silica hybrid (110) and located between metal lines (104).
Abstract:
One aspect of the invention provides a method of forming a semiconductor device (100). One aspect includes forming transistors (120, 125) on a semiconductor substrate (105), forming a first interlevel dielectric layer (165) over the transistors (120, 125), and forming metal interconnects (170, 175) within the first interlevel dielectric layer (165). A carbon-containing gas is used to form a silicon carbon nitride (SiCN) layer (180) over the metal interconnects (170, 175) and the first interlevel dielectric layer (165) within a deposition tool. An adhesion layer (185) is formed on the SiCN layer (180), within the deposition tool, by discontinuing a flow of the carbon-containing gas within the deposition chamber. A second interlevel dielectric layer (190) is formed over the adhesion layer (185).
Abstract:
A method of fabricating a copper interconnect using a sacrificial layer. A SiC layer (106) is formed over the dielectric layer (102). A sacrificial layer (108) is formed over the SiC layer (106). A trench (112) is etched in the sacrificial layer (108), the SiC layer (106) and the dielectric layer (102). A sputter etch of the sacrificial layer (108) is used to create a wider opening at a top of the sacrificial layer (108) than at a top of the dielectric layer (102). A barrier layer (114) and copper seed layer (116) are formed. The trench (112) is then filled with copper (124). CMP is used to remove the excess copper (124) and barrier layer (114) stopping on the SiC (106).
Abstract:
A method of fabricating an interconnect structure, comprising exposing an empty deposition chamber to a process that includes generating reactive species produced from a source gas in the presence of a plasma. The method further comprises terminating the plasma and then introducing a semiconductor substrate with a metal layer thereon into the chamber while the reactive species are present in the chamber.