Abstract:
PROBLEM TO BE SOLVED: To solve a problem pertaining to emission gas of photoresist resulting from implantation of plasma immersion ions. SOLUTION: Ions are implanted into a substrate having a photoresist P by plasma immersion ion implantation method. In this method, first gas is ionized in a processing chamber 12 to generate electrically inactive ions which are caused to react on the photoresist to generate an emission gas substance and that gas substance is discharged constantly from the processing chamber 12 so that it is not ionized. Furthermore, second gas is ionized in the processing chamber 12 to generate electrically active ions and ion species thereof charged positively are implanted into the surface of the substrate. Since the photoresist is hardened prior to ion implantation, gas is ionized in the processing chamber to generate positive ions and electrons. Electrons are attracted first to the substrate and positive ions are implanted into the substrate after the photoresist is hardened thus preventing gas emission of photoresist.
Abstract:
PROBLEM TO BE SOLVED: To provide a wafer treating device for increasing wafer treatment capacity by decreasing contamination in a treatment chamber, and a method for accessing the wafer treating device. SOLUTION: A wafer treating device 200 is provided with a treatment chamber 202 having upper and lower parts, and an annular ring valve 210 that is engaged to one of both the parts. The ring valve 210 can be operated to perform treatment by closing the treatment chamber 202 at a first position, and to perform access by releasing the treatment chamber 202 at a second position. The ring valve at the first position forms a uniform surface at the inner periphery part of the closed treatment chamber, thus making uniform the treatment state in the treatment chamber. The access method for that purpose includes a step for closing an access port in the treatment chamber for moving the ring valve 202 in the treatment chamber from the first position that cannot be accessed to the second position for opening the access port.
Abstract:
PROBLEM TO BE SOLVED: To reduce a loss time for ion beam by hardening a power supply for an ion implantation device. SOLUTION: At least one power supply 64 to supply a voltage for at least one electrode 62 is integrated with a switch device capable of mitigating overload of the electrode 62 where the power supply 64 and the electrode 62 are decoupled in a certain threshold. Also, the method for hardening the power supply includes such steps as watching the electric current from at least one power supply driving at least one electrode, and of insulating the source from the electrode if the current is larger than a certain level of threshold by deciding the level at the threshold.
Abstract:
PROBLEM TO BE SOLVED: To provide a system and method for determining stray light in a heat treatment furnace. SOLUTION: In a system and method for determining the stray radiation (stray light) within a heating chamber 74 of a heat-treatment apparatus 22, the stray radiation is determined by moving an unheated wafer to a plurality of longitudinal positions, and measuring with a detector 36 the amount of radiation reflected from the wafer in each longitudinal direction. The total measured radiation is then correlated with the stray radiation component of the total radiation.
Abstract:
PROBLEM TO BE SOLVED: To provide a perfect method by which the ending point of ashing for non oxygen plasma peeling treatment can be detected accurately. SOLUTION: In this method of deicing the ending point of non-oxygen plasma peeling treatment, used at the working of a semiconductor wafer, and non- oxygen plasma is generated by exciting a gas composition, containing a nitrogen gas and a reactive gas and is made to react to a substrate 88 carrying a photoresist/residues. The ending point is decided by optically measuring the first opically discharged signal of the resulted product of an oxygen-free resection at a wavelength of about 387 nm. When the plasma does not react to the substrate 88 any longer, the generating time of the optically discharged signal with the wavelength of about 387 nm is decided as the ending point and is displayed that the photoresist/residues are removed from the wafer. It is also possible to decide the ending point by monitoring the second optically discharged signal of the resulted product of the oxygen-free reaction at wavelengths of about 358 nm and 431 nm.
Abstract:
PROBLEM TO BE SOLVED: To provide a plasma stripping method, having a high selective ratio and a high processing capacity and a dry ashing process. SOLUTION: This is a method of removing a photoresist 16 and/or residues after etching from an exposed low K dielectric layer 14 and makes a non-oxygen plasma, having electrically neutral particles and charged particles, by exposing a non-oxygen gas to an energy source. Thereafter, the charge particles are selectively removed from the plasma. The electrically neutral particles react with the photoresist 16 and/or the residues after etching to form a volatile gas to be removed from a wafer by a gas flow. The gas composition of the non-oxygen plasma comprises a gas containing hydrogen and a gas containing fluorine, wherein the gas containing fluorine is about 10% or less of the gas composition.
Abstract:
An ion implantation system (100) comprising an ion source (116) configured to generate an ion beam (104) along a beam path (136), a mass analyzer (130) is located downstream of the ion source wherein the mass analyzer is configured to perform mass analysis of the ion beam and a beam complementary aperture (330) located downstream of the mass analyzer and along the beam path, the beam complementary aperture having a size and shape corresponding to a cross-sectional beam envelope of the ion beam.
Abstract:
An ion implantation apparatus, system, and method are provided for transferring a plurality of workpieces between vacuum and atmospheric pressures, wherein an alignment mechanism is operable to align a plurality of workpieces for generally simultaneous transportation to a dual-workpiece load lock chamber. The alignment mechanism comprises a characterization device, an elevator, and two vertically-aligned workpiece supports for supporting two workpieces. First and second atmospheric robots are configured to generally simultaneously transfer two workpieces at a time between load lock modules, the alignment mechanism, and a FOUP. Third and fourth vacuum robots are configured to transfer one workpiece at a time between the load lock modules and a process module.
Abstract:
A Faraday cup structure for use with a processing tool. The cup structure has a conductive strike plate coupled to a circuit for monitoring ions striking the strike plate to obtain an indication of the ion beam current. The electrically conductive strike plate is fronted by a mask for dividing an ion beam intercepting cross section into regions or segments. The mask including walls extending to the strike plate for impeding ions reaching the sensor and particles dislodged from the sensor from entering into the evacuated region of the processing tool.
Abstract:
An exemplary ion source for creating a stream of ions has an aluminum alloy arc chamber body that at least partially bounds an ionization region of the arc chamber. The arc chamber body is used with a hot filament arc chamber housing that either directly or indirectly heats a cathode to sufficient temperature to cause electrons to stream through the ionization region of the arc chamber. A temperature sensor monitors temperatures within the arc chamber and provides a signal related to sensed temperature. A controller monitors sensed temperature as measured by the sensor and adjusts the temperature to maintain the sensed temperature within a range.