摘要:
Embodiments of the present invention provide apparatus and method for reducing non uniformity during thermal processing. One embodiment provides an apparatus for processing a substrate comprising a chamber body defining a processing volume, a substrate support disposed in the processing volume, wherein the substrate support is configured to rotate the substrate, a sensor assembly configured to measure temperature of the substrate at a plurality of locations, and one or more pulse heating elements configured to provide pulsed energy towards the processing volume.
摘要:
Embodiments of the present invention provide apparatus and method for reducing non uniformity during thermal processing. One embodiment provides an apparatus for processing a substrate comprising a chamber body defining a processing volume, a substrate support disposed in the processing volume, wherein the substrate support is configured to rotate the substrate, a sensor assembly configured to measure temperature of the substrate at a plurality of locations, and one or more pulse heating elements configured to provide pulsed energy towards the processing volume.
摘要:
Embodiments of the present invention provide apparatus and method for reducing non uniformity during thermal processing. One embodiment provides an apparatus for processing a substrate comprising a chamber body defining a processing volume, a substrate support disposed in the processing volume, wherein the substrate support is configured to rotate the substrate, a sensor assembly configured to measure temperature of the substrate at a plurality of locations, and one or more pulse heating elements configured to provide pulsed energy towards the processing volume.
摘要:
Methods and apparatus for radiation processing of semiconductor substrates using microwave or millimeter wave energy are provided. The microwave or millimeter wave energy may have a frequency between about 600 MHz and about 1 THz. Alternating current from a magnetron is coupled to a leaky microwave emitter that has an inner conductor and an outer conductor, the outer conductor having openings with a dimension smaller than a wavelength of the emitted radiation. The inner and outer conductors are separated by an insulating material. Interference patterns produced by the microwave emissions may be uniformized by phase modulating the power to the emitter and/or by frequency modulating the frequency of the power itself. Power from a single generator may be divided to two or more emitters by a power divider.
摘要:
A method of calculating a process parameter for a deposition of an epitaxial layer on a substrate. The method includes the steps of measuring an effect of the process parameter on a thickness of the epitaxial layer to determine a gain curve for the process parameter, and calculating, using the gain curve, a value for the process parameter to achieve a target thickness of the epitaxial layer. The value is calculated to minimize deviations from the target thickness in the layer. Also, a substrate processing system comprising that includes a processor to calculate a value for the process parameter to achieve a substantially uniform epitaxial layer of a target thickness on the substrate, where the value is calculated using a gain curve derived from measurements of layer uniformity as a function of the value of the process parameter.
摘要:
The present invention generally relates to methods of cooling a substrate during rapid thermal processing. The methods generally include positioning a substrate in a chamber and applying heat to the substrate. After the temperature of the substrate is increased to a desired temperature, the substrate is rapidly cooled. Rapid cooling of the substrate is facilitated by increasing a flow rate of a gas through the chamber. Rapid cooling of the substrate is further facilitated by positioning the substrate in close proximity to a cooling plate. The cooling plate removes heat from substrate via conduction facilitated by gas located therebetween. The distance between the cooling plate and the substrate can be adjusted to create a turbulent gas flow therebetween, which further facilitates removal of heat from the substrate. After the substrate is sufficiently cooled, the substrate is removed from the chamber.
摘要:
During fabrication, a rotating semiconductor substrate is radiated in accordance with a thermal recipe. Temperature measurements of the semiconductor substrate are obtained along with the position of the semiconductor substrate at the time of each temperature measurement. It is then determined for the position of the semiconductor substrate whether at least one particular temperature measurement of the temperature measurements should be filtered. If so, at least one filtered temperature measurement is obtained. The radiation of the semiconductor substrate is subsequently controlled based on the temperature measurements, the at least one filtered temperature measurement, and the thermal recipe.
摘要:
A thermal processing method is described in which a temperature response of a substrate may be controlled during a heat-up phase or a cool-down phase, or during both phases. This reduces the thermal budget of the substrate and improves the quality and performance of devices formed on the substrate. In particular, by controlling the rate of heat transfer between the substrate and a thermal reservoir (e.g., a watercooled reflector plate assembly), the temperature response of the substrate may be controlled during the thermal process. The rate of heat transfer may changed by changing the thermal conductivity between the substrate and the thermal reservoir, by changing the emissivity of a surface of the thermal reservoir, or by changing the distance between the substrate and the thermal reservoir. The thermal conductivity may be changed by changing the characteristics of a thermal transport medium (e.g., a purge gas) located between the substrate and the thermal reservoir. For example, the thermal conductivity may be changed by changing the composition of the purge gas or the pressure of the purge gas between the substrate and the thermal reservoir. In one implementation, the substrate is heated in accordance with a heating schedule and, during the heating schedule, the rate of heat transfer between the substrate and a thermal reservoir inside the thermal processing system is changed. In another implementation, a first purge gas is supplied into the thermal processing system, the substrate is heated in accordance with a heating schedule, and a second purge gas that is different from the first purge gas is supplied into the thermal processing system.
摘要:
The present invention generally relates to methods of cooling a substrate during rapid thermal processing. The methods generally include positioning a substrate in a chamber and applying heat to the substrate. After the temperature of the substrate is increased to a desired temperature, the substrate is rapidly cooled. Rapid cooling of the substrate is facilitated by increasing a flow rate of a gas through the chamber. Rapid cooling of the substrate is further facilitated by positioning the substrate in close proximity to a cooling plate. The cooling plate removes heat from substrate via conduction facilitated by gas located therebetween. The distance between the cooling plate and the substrate can be adjusted to create a turbulent gas flow therebetween, which further facilitates removal of heat from the substrate. After the substrate is sufficiently cooled, the substrate is removed from the chamber.
摘要:
Methods and apparatus for radiation processing of semiconductor substrates using microwave or millimeter wave energy are provided. The microwave or millimeter wave energy may have a frequency between about 600 MHz and about 1 THz. Alternating current from a magnetron is coupled to a leaky microwave emitter that has an inner conductor and an outer conductor, the outer conductor having openings with a dimension smaller than a wavelength of the emitted radiation. The inner and outer conductors are separated by an insulating material. Interference patterns produced by the microwave emissions may be uniformized by phase modulating the power to the emitter and/or by frequency modulating the frequency of the power itself. Power from a single generator may be divided to two or more emitters by a power divider.