Abstract:
A thin film formation method to form a silicon film containing an impurity on a surface of an object to be processed in a process chamber that allows vacuum exhaust includes alternately and repeatedly performing a first gas supply process in which a silane-based gas composed of silicon and hydrogen is supplied into the process chamber in a state that the silane-based gas is adsorbed onto the surface of the object to be processed and a second gas supply process in which an impurity-containing gas is supplied into the process chamber, to form an amorphous silicon film containing an impurity. Accordingly, an amorphous silicon film containing an impurity having good filling characteristics can be formed even at a relatively low temperature.
Abstract:
There is provided a micro pattern forming method including forming a thin film on a substrate; forming a film serving as a mask when processing the thin film; processing the film serving as a mask into a pattern including lines having a preset pitch; trimming the pattern including the lines; and forming an oxide film on the pattern including the lines and on the thin film by alternately supplying a source gas and an activated oxygen species. Here, the process of trimming the pattern and the process of forming an oxide film are consecutively performed in a film forming apparatus configured to form the oxide film.
Abstract:
An insulting film is modified by subjecting the insulting film to a modification treatment comprising a combination of a plasma treatment and a thermal annealing treatment. There is provided a method of enhancing the characteristic of an insulating film by improving deterioration in the characteristic of the insulating film due to carbon, a suboxide, a dangling bond or the like contained in the insulating film.
Abstract:
Disclosed is a patterning method including: forming, on a thin film, a sacrificial film made of a material different from that of the thin film and made of SiBN; processing the sacrificial film into a pattern having a preset interval by using a photolithography technique; forming, on sidewalls of the processed sacrificial film, sidewall spacers made of a material different from those of the sacrificial film and the thin film; removing the processed sacrificial film; and processing the thin film by using the sidewall spacers as a mask.
Abstract:
After silicon nitride films have been formed on wafers by a film forming process in a reaction vessel, the reaction vessel is processed by a purging process specified by a purging recipe and compatible with the film forming process to suppress production of gases and particles by removing surface parts of films deposited on the inside surface of the reaction vessel and causative of production of gases and particles.A wafer boat 25 holding a plurality of wafers W is loaded into a reaction vessel 2, and the wafers W are processed by a film forming process specified by a film forming recipe 1 specifying, for example, Si2Cl2 gas and NH3 gas as film forming gases. Subsequently, a purging recipe 1 specifying a purging process compatible to the film forming process is selected automatically, and the reaction vessel 2 is processed by the purging process specified by the purging recipe 1. A purging recipe is selected automatically from a plurality of purging recipes specifying purging processes respectively compatible with film forming processes. Unnecessary extension of purging time is suppressed and the reaction vessel 2 can be processed by an appropriate purging process compatible with the film forming process.
Abstract:
A silicon dioxide film removing method is capable of removing a silicon dioxide film, such as a natural oxide film or a chemical oxide film, at a temperature considerably higher than a room temperature. The silicon dioxide film removing method of removing a silicon dioxide film formed on a workpiece in a processing vessel 18 that can be evacuated uses a mixed gas containing HF gas and NH3 gas for removing the silicon dioxide film. The silicon dioxide film can be efficiently removed from the surface of the workpiece by using the mixed gas containing HF gas and NH3 gas.
Abstract:
A film formation process is performed to form a silicon nitride film on a target substrate within a process field configured to be selectively supplied with a first process gas containing a silane family gas and a second process gas containing a nitriding gas. The method is preset to compose the film formation process of a main stage with an auxiliary stage set at one or both of beginning and ending of the film formation process. The main stage includes an excitation period of supplying the second process gas to the process field while exciting the second process gas by an exciting mechanism. The auxiliary stage includes no excitation period of supplying the second process gas to the process field while exciting the second process gas by the exciting mechanism.
Abstract:
A film formation apparatus for a semiconductor process includes a support member having a plurality of support levels configured to support target substrates inside a reaction chamber; a film formation gas supply system configured to supply a film formation gas into the reaction chamber and including a gas distribution nozzle; a cleaning gas supply system configured to supply a cleaning gas for etching a by-product film deposited inside the reaction chamber; and an exhaust system configured to exhaust gas from inside the reaction chamber. The cleaning gas supply system includes a gas nozzle disposed near a bottom of the reaction chamber and having a gas supply port at its top directed upward, and the gas supply port is located below the lowermost one of the support levels of the support member.
Abstract:
A silicon nitride film is formed on a target substrate by performing a plurality of cycles in a process field configured to be selectively supplied with a first process gas containing a silane family gas and a second process gas containing a nitriding gas. Each of the cycles includes a first supply step of performing supply of the first process gas while maintaining a shut-off state of supply of the second process gas, and a second supply step of performing supply of the second process gas, while maintaining a shut-off state of supply of the first process gas. The method is arranged to repeat a first cycle set with the second supply step including an excitation period of exciting the second process gas and a second cycle set with the second supply step including no period of exciting the second process gas.
Abstract:
An impurity-doped silicon nitride or oxynitride film is formed on a target substrate by CVD, in a process field to be selectively supplied with a first process gas containing a silane family gas, a second process gas containing a nitriding or oxynitriding gas, and a third process gas containing a doping gas. This method alternately includes first to fourth steps. The first step performs supply of the first and third process gases to the field. The second step stops supply of the first to third process gases to the field. The third step performs supply of the second process gas to the field while stopping supply of the first and third process gases to the field, and includes an excitation period of exciting the second process gas by an exciting mechanism. The fourth step stops supply of the first to third process gases to the field.