Abstract:
A method for forming an aluminum-doped metal (tantalum or titanium) carbonithde gate electrode for a semiconductor device is described. The method includes providing a substrate containing a dielectric layer thereon, and forming the gate electrode on the dielectric layer in the absence of plasma. The gate electrode is formed by depositing a metal carbonithde film, and adsorbing an atomic layer of an aluminum precursor on the metal carbonithde film. The steps of depositing and adsorbing may be repeated a desired number of times until the aluminum-doped metal carbonitride gate electrode has a desired thickness.
Abstract:
A SiGe thin layer semiconductor structure containing a substrate (400, 500, 600) having a dielectric layer (410, 510, 610), a variable composition SixGe1-x layer (440, 520, 620) on dielectric layer (410, 510, 610), and a Si cap layer (450, 530, 630) on the variable composition SixGe1x layer (440, 520, 620). The variable composition SixGe1-x layer (440, 520, 620) can contain a SixGe1-x layer (520, 620) with a graded Ge content or a plurality of SixGe1-x. sub-layers (420, 430) each with different Ge content (421, 431). In one embodiment of the invention, the SiGe thin layer semiconductor structure contains a semiconductor substrate (600) having a dielectric layer (610), a Si-containing seed layer (615) on the dielectric layer (610), a variable composition SixGe1-x layer (620) on the seed layer (615), and a Si cap layer (630) on the variable composition SixGe 1-x layer (620). A method and processing tool (1, 100) for fabricating the SiGe thin layer semiconductor structure are also provided.
Abstract:
Embodiments of apparatus (100) and methods for performing high throughput non-plasma processing are generally described herein. Other embodiments may be described and claimed.
Abstract:
An iPVD system (200A) is programmed to deposit a barrier and/or seed layer (10) using a Ru-containing material into high aspect ratio nano-size features on semiconductor substrates (12, 211 ) using a process which enhances the sidewalÊ (16) coverage compared to the field and bottom (15) coverage(s) while minimizing or eliminating overhang within an IPVD processing chamber (220). In the preferred embodiment, an IPVD apparatus having a frusto-conical ruthenium target (225) equipped with a high density ICP source is provided.
Abstract:
Systems and methods for depositing thin films using Atomic Layer Deposition (ALD). The deposition system (10) includes a process chamber (16) with a peripheral sidewall (36), partitions (68, 70, 72, 74) that divide a processing space (38) inside the process chamber (16) into at least two compartments (76, 78), and a platter (50) that supports substrates (15) within the processing space (38). The platter (50) rotates the substrates (15) relative to the stationary peripheral sidewail (36) and compartments (76, 78). One compartment (76) receives a process material used to deposit a layer on each of the substrates (15) and the other compartment (78) contains an inert gas. A material injector (100, 100a, 100b), which injects the process materia!, communicates with the compartment (76) through the peripheral sidewall (36).
Abstract:
Control of radial or non-radial temperature distribution is controlled across a substrate during processing to compensate for non-uniform effects, including non-uniformities arising from system or process. Temperature is controlled, preferably dynamically, by flowing backside gas differently across different areas on a wafer supporting chuck (substrate support table 20, 20a) to vary heat conduction across the wafer. Ports (26, 26a) in the support table (20, 20a) are grouped, and gas to or from the groups is separately controlled by different valves (32) responsive to a controller (35) that controls gas pressure in each of the areas to spatially and preferably dynamically control wafer temperature to compensate for system and process non-uniformities. Wafer deformation is affected by separately controlling the pressure of the backside gas at different ports (26, 26a) to control the local force exerted on the backside of the substrate, by separately dynamically controlling valves (32) affecting gas flow to a port (26, 26a) and ports (26, 26a) surrounding said port (26, 26a).
Abstract:
A boat (50) is provided for stacking semiconductor wafers (20) vertically in processes in which low friction deposits may coat wafer supporting surfaces and allow the wafers to slip sideways in the boat, leaving them sufficiently out of alignment to cause wafer breakage in handling. Typical boats for these processes have vertical legs (52) in which aligned notches (58) support the wafers. The notches provide enough clearance around the edge of the wafers to facilitate loading and unloading of the wafers without wafer damage, as long as the wafers remain centered. With the invention, each notch has a shallow recess (66) on which the edge of a wafer can rest. The recess adds a low step close to the wafer edge that resists horizontal sliding movement of the wafer. Wafers inserted into the boat in a plane spaced above the steps, then lowered onto the recesses.
Abstract:
A processing system (1, 504B) and method for integrated substrate processing in a substrate processing tool (500). The processing system (1, 504B) contains a substrate holder (20) configured for supporting and controlling the temperature of the substrate (25), a hot filament hydrogen radical source (31 ) for generating hydrogen radicals, and a controller (70, 510) configured for controlling the processing system (1, 504B). The hot filament hydrogen radical source (31 ) includes a showerhead assembly (30) containing an internal volume (37) and a showerhead plate (35) having gas passages (33) facing the substrate (25) for exposing the substrate (25) to the hydrogen radicals, and at least one meta! wire filament (59, 59a, 59b, 59c) within the interna! volume (37) to thermaliy dissociate H2 gas into the hydrogen radicals. The integrated process includes pretreating exposed surfaces of an etch feature (105) in a dielectric film (113, 115, 624, 626) and an exposed metal interconnect pattern (111 A, 622A) formed underneath the etch feature (105) with a flow of hydrogen radicals generated by thermal decomposition of H2 gas by a hot filament hydrogen radical source (31 ) separated from the substrate (25) by a showerhead plate (35) containing gas passages (33) facing the substrate (25). The integrated process further includes depositing a barrier metal film (116, 628) over the pretreated exposed surfaces, and forming a Cu metal film (113) on the barrier metal film (116, 628).
Abstract:
A method is provided for reducing the amount of film fragments (66a) discharged into a processing liquid circulation system (73, 73') during removal of films (66) from wafers (W), thereby reducing the frequency of filter (80) cleaning or filter (80) replacement. The method includes exposing a wafer (W) containing a film (66) formed thereon in a process chamber (46) of a substrate processing system (1) to a processing liquid (64), where the wafer (W) is not rotated or is rotated at a first speed (608a, 908a, 1208a) and the processing liquid (64) is discharged from the process chamber (46) to a processing liquid circulation system (73). Subsequently, exposure of the wafer (W) to the processing liquid (64, 64a, 64b) is discontinued and the wafer (W) is rotated at a second speed (608b, 908b, 1208b) greater than the first speed (608a, 908a, 1208a) to centrifugally remove fragments (66a) of the film (66) from the wafer (W). Next, the wafer (W) is exposed to the same or a different processing liquid (64, 64a, 64b) and the processing liquid (64, 64a, 64b) is discharged from the process chamber (46) to a processing liquid drain (78).
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.