Abstract:
A method and apparatus for developing a resist on a substrate in which a sacrificial surfactant-containing liquid is first applied to a resist as a pretreatment to reduce developing process defects and to improve the development process time and the uniformity of the resist. The pretreatment is followed by supplying a developing solution to the resist and thereafter developing the resist.
Abstract:
A method of patterning a multi-layer mask (150, 150', 220) is described. The method includes preparing a multi-layer mask (150, 150', 220) on a substrate (1 10, 1 10', 200), wherein the multi-layer mask (150, 150', 220) includes a lithographic layer (226) and an intermediate mask layer (222) underlying the lithographic layer (226), and wherein the intermediate mask layer (222) comprises a carbon-containing compound. The method further includes: establishing an etch process recipe for transferring a pattern (230), that is formed in the lithographic layer (226) and characterized by an initial pattern critical dimension (CD) (152, 152', 232, 232'), to the intermediate mask layer (222); establishing at least one parametric relationship between an intermediate pattern CD (154, 154', 252, 252', 262, 262', 272, 272') to be formed in the intermediate mask layer (222) and at least one process parameter, wherein the at least one parametric relationship provides process conditions capable of increasing and decreasing the initial pattern CD (152, 152', 232, 232') to the intermediate pattern CD (154, 154', 252, 252', 262, 262', 272, 272'); selecting a target process condition to achieve a target CD adjustment between the initial pattern CD (152, 152', 232, 232') and the intermediate pattern CD (154, 154', 252, 252', 262, 262', 272, 272'); and transferring the pattern from the lithographic layer (226) to the intermediate mask layer (222) using the target process condition.
Abstract:
A processing method is provided for plasma etching features in a silicon nitride (SiN) film covered by a mask pattern. The method includes providing a film stack on a substrate, the film stack containing a SiN film on the substrate and a mask pattern on the SiN film, transferring the mask pattern to the SiN film by exposing the film stack to a first plasma containing a carbon-fluorine-containing gas, O 2 gas, and optionally HBr gas, and exposing the film stack to a second plasma containing a carbon-fluorine- containing gas, O 2 gas, a silicon-fluorine-containing gas, and optionally HBr gas.
Abstract:
A method for double patterning a substrate (110, 310) is described. The double patterning method may include a litho/freeze/litho/etch (LFLE) technique that includes a first (critical dimension) CD slimming process to reduce the first CD (124, 325) to a first reduced CD (126, 326) and a second CD slimming process to reduce the second CD (144, 326) to a second reduced CD (146, 335).
Abstract:
Embodiments of the invention describe a method for forming dielectric films for semiconductor devices. The method includes providing a substrate in a process chamber containing a microwave plasma source, introducing into the process chamber a non-metal-containing process gas including a deposition gas having a carbon-nitrogen intermolecular bond, forming a plasma from the process gas, and exposing the substrate to the plasma to deposit carbon-nitrogen-containing film on the substrate. In some embodiments, the carbon-nitrogen-containing film can include a CN film, a CNO film, a Si-doped CN film, or a Si-doped CNO film.
Abstract:
A method of patterning a substrate (110) is described. The method includes preparing a film stack on a substrate (110), wherein the film stack comprises a spin-on layer (120), and heating the spin-on layer (120) to a cure temperature less than a thermal decomposition temperature of the spin-on layer (120) and exceeding about 200 degrees C to increase mechanical strength of the spin-on layer (120). The method further includes forming a feature pattern (105) without pattern collapse in the spin-on layer (120), wherein the feature pattern (105) is characterized by a critical dimension (155) less than 35nm (nanometers) and an aspect ratio relating a height (150) of the feature pattern (1 05) to the critical dimension (155) exceeding 5:1.
Abstract:
A semiconductor device containing a substrate (25, 92) and a nitrided high-k film (96) on the substrate (25, 92), and method of forming a nitrided high-k film (96). The nitrided high-k film (96) contains an oxygen-containing film and a nitrogen- containing film that is oxidized through at least a portion of the thickness thereof. The nitrogen-containing film and the oxygen-containing film contain the same one or more metal elements selected from alkaline earth elements, rare earth elements, and Group IVB elements of the Periodic Table. The nitrided high-k film (96) can optionally further contain aluminum, siiicon, or aluminum and silicon. The nitrided high-k film (96) is formed on the substrate (25, 92) by a) depositing a nitrogen-containing film, and b) depositing an oxygen-containing film, wherein steps a) and b) are performed in any order, any number of times, so as to oxidize at least a portion of the thickness of the nitrogen-containing film. According to one embodiment, the method includes forming a nitrided hafnium based high-k film (96).
Abstract:
A method for double patterning a thin film (220) on a substrate (210) is described. The method includes forming the thin film (220) to be patterned on the substrate (210), forming a developable anti-reflective coating (ARC) layer (240) on the thin film (220), and forming a layer of photo-resist (250) on the arc layer (240). Thereafter, the layer of photo-resist (250) and the arc layer (240) are imaged with a first image pattern region (252), and developed, thus forming the first image pattern (242) in the arc layer (240). The photo-resist (250) is removed and another layer of photo-resist (260) is formed on the arc layer (240). Thereafter, the other layer of photo-resist (260) and the arc layer (240) are imaged with a second image pattern region (254), and developed, thus forming the second image pattern (244) in the arc layer (240). The other photo-resist layer (260) is removed and a double patterned arc layer (240) remains for etching the underlying thin film (220).
Abstract:
An exhaust assembly is described for use in a plasma processing system (10, 100, 110, 200, 300, 500, 600, 700), whereby secondary plasma is formed in the exhaust assembly (140, 240, 334) between the processing space and chamber exhaust ports in order to reduce plasma leakage (18) to a vacuum pumping system (16, 130, 330), or improve the uniformity of the processing plasma, or both. The exhaust assembly (140, 240, 334) includes a powered exhaust plate (142, 242) in combination with a ground electrode (244) is utilized to form the secondary plasma surrounding a peripheral edge of a substrate treated in the plasma processing system.
Abstract:
A thermal processing system (10) with improved gas flow and method for injecting a process gas into a thermal processing system (10). The thermal processing system (10) has an injection section (50; 82) with injection outlets (52) that inject process gas into a processing space (14) and a delivery section (46; 81; 104) that delivers process gas to the injection section (50). The delivery section (46; 81; 104) may be coupled with the injection section (50; 82) at an inlet disposed between opposite ends (53, 53) of the injection section (50; 82). A fluid lumen (56) of the injection section (50; 82) may have a larger cross-sectional area than a fluid lumen (45) of the delivery section (46; 81; 104). The thermal processing system (10) may include an inner tube (12), which surrounds the processing space (14), having a slit (16) through which the processing space (14) communicates with an annular pumping space (72) defined between the inner tube (12) and an outer tube (12) of the thermal processing system (10).