Abstract:
A plasma generation device includes: a pair of electrodes that cause plasma to be generated in atmospheric pressure by a voltage being applied between the pair of electrodes; and a power source that includes a step-up transformer that has a coupling coefficient of 0.9 or greater and 0.9999 or less and generates the voltage.
Abstract:
Provided is a plasma etching method of etching OCOC film in which HTO films and carbon films are alternately laminated by plasma of mixed gas containing first CF-based gas or second CF-based gas and oxygen gas using a silicon film formed on OCOC film as a mask. The etching of OCOC film includes a first etching process of etching a region spanning from the top surface to the middle of OCOC film by plasma of mixed gas containing first CF-based gas having a predetermined ratio of content of carbon to content of fluorine and oxygen gas and a second etching process of etching a region spanning from the middle of OCOC film to the lowest layer by plasma of mixed gas containing second CF-based gas having a ratio of content of carbon to content of fluorine, which is higher than the predetermined ratio of first CF-based gas, and oxygen gas.
Abstract:
A power supply device for plasma processing, wherein electric arcs may occur, comprises a power supply circuit for generating a voltage across output terminals, and a first switch connected between the power supply circuit and one of the output terminals. According to a first aspect the power supply device comprises a recovery energy circuit connected to the output terminals and to the power supply circuit. According to a second aspect the power supply device comprises an inductance circuit including an inductor and a second switch connected parallel to the inductor. According to a third aspect the power supply device comprises a controller for causing the power supply circuit and the first switch to be switched on and off. The controller is configured to determine a quenching time interval by means of a self-adaptive process. The quenching time interval defines the time interval during which, in an event of an arc, no voltage is generated across the output terminals.
Abstract:
Provided is a plasma etching method of etching OCOC film in which HTO films and carbon films are alternately laminated by plasma of mixed gas containing first CF-based gas or second CF-based gas and oxygen gas using a silicon film formed on OCOC film as a mask. The etching of OCOC film includes a first etching process of etching a region spanning from the top surface to the middle of OCOC film by plasma of mixed gas containing first CF-based gas having a predetermined ratio of content of carbon to content of fluorine and oxygen gas and a second etching process of etching a region spanning from the middle of OCOC film to the lowest layer by plasma of mixed gas containing second CF-based gas having a ratio of content of carbon to content of fluorine, which is higher than the predetermined ratio of first CF-based gas, and oxygen gas.
Abstract:
Method of treating a substrate (11), comprising: •providing a treatment space (5) between at least two opposing electrodes (2,3), filling the treatment space with a gas composition, •placing the substrate, which is a porous substrate, in the treatment space, generating an atmospheric pressure glow discharge plasma between the at least two opposing electrodes, and •subjecting the porous substrate to the atmospheric pressure glow discharge plasma, thereby creating micro-pores uniformly throughout the porous substrate, •wherein the atmospheric pressure glow discharge plasma in the treatment space has a specific energy of 10 J/cm or higher, and wherein the treatment space comprises oxygen in the range of 0.1 to 21% vol. %. The resultant substrates are useful for ion exchange.
Abstract:
A system and method for managing power delivered to a processing chamber is described. In one embodiment current is drawn away from the plasma processing chamber while initiating an application of power to the plasma processing chamber during an initial period of time, the amount of current being drawn away decreasing during the initial period of time so as to increase the amount of power applied to the plasma processing chamber during the initial period of time.
Abstract:
A power supply device for plasma processing, wherein electric arcs may occur, comprises a power supply circuit for generating a voltage across output terminals, and a first switch connected between the power supply circuit and one of the output terminals. According to a first aspect the power supply device comprises a recovery energy circuit connected to the output terminals and to the power supply circuit. According to a second aspect the power supply device comprises an inductance circuit including an inductor and a second switch connected parallel to the inductor. According to a third aspect the power supply device comprises a controller for causing the power supply circuit and the first switch to be switched on and off. The controller is configured to determine a quenching time interval by means of a self-adaptive process. The quenching time interval defines the time interval during which, in an event of an arc, no voltage is generated across the output terminals.
Abstract:
Determining a high frequency operating parameter in a plasma system including a plasma power supply device coupled to a plasma load using a hybrid coupler having four ports is accomplished by: generating two high frequency source signals of identical frequency, the signals phase shifted by 90° with respect to one another; generating a high frequency output signal by combining the high frequency source signals in the hybrid coupler; transmitting the high frequency output signal to the plasma load; detecting two or more signals, each signal corresponding to a respective port of the hybrid coupler and related to an amplitude of a high frequency signal present at the respective port; and based on an evaluation of the two or more signals, determining the high frequency operating parameter.
Abstract:
A plasma supply device generates an output power greater than 500 W at an essentially constant basic frequency greater than 3 MHz and powers a plasma process to which is supplied the generated output power, and from which reflected power is returned to the plasma supply device. The plasma supply device includes at least one inverter connected to a DC power supply, which inverter has at least one switching element, and an output network, wherein the at least one output network includes at least one inductance that has at least one magnetic field strengthening element that is a Perminvar ferrite.
Abstract:
A system and method for managing power delivered to a processing chamber is described. In one embodiment current is drawn away from the plasma processing chamber while initiating an application of power to the plasma processing chamber during an initial period of time, the amount of current being drawn away decreasing during the initial period of time so as to increase the amount of power applied to the plasma processing chamber during the initial period of time.