Abstract:
Compositions, methods, and apparatus are described for carrying out nitrogen ion implantation, which avoid the incidence of severe glitching when the nitrogen ion implantation is followed by another ion implantation operation susceptible to glitching, e.g., implantation of arsenic and/or phosphorus ionic species. The nitrogen ion implantation operation is advantageously conducted with a nitrogen ion implantation composition introduced to or formed in the ion source chamber of the ion implantation system, wherein the nitrogen ion implantation composition includes nitrogen (N2) dopant gas and a glitching-suppressing gas including one or more selected from the group consisting of NF3, N2F4, F2, SiF4, WF6, PF3, PF5, AsF3, AsF5, CF4 and other fluorinated hydrocarbons of CxFy (x≧1, y≧1) general formula, SF6, HF, COF2, OF2, BF3, B2F4, GeF4, XeF2, O2, N2O, NO, NO2, N2O4, and O3, and optionally hydrogen-containing gas, e.g., hydrogen-containing gas including one or more selected from the group consisting of H2, NH3, N2H4, B2H6, AsH3, PH3, SiH4, Si2H6, H2S, H2Se, CH4 and other hydrocarbons of CxHy (x≧1, y≧1) general formula and GeH4.
Abstract:
An ion implantation system and method, providing cooling of dopant gas in the dopant gas feed line, to combat heating and decomposition of the dopant gas by arc chamber heat generation, e.g., using boron source materials such as B2F4 or other alternatives to BF3. Various arc chamber thermal management arrangements are described, as well as modification of plasma properties, specific flow arrangements, cleaning processes, power management, equilibrium shifting, optimization of extraction optics, detection of deposits in flow passages, and source life optimization, to achieve efficient operation of the ion implantation system.
Abstract:
Described are systems and methods of storing adsorbing diborane on carbon adsorption medium. The invention discloses a vessel for storing diborane. The vessel includes: a vessel interior; microporous carbon adsorbent in the vessel interior; diborane in the vessel interior at least partially adsorbed on the microporous adsorbent. The microporous adsorbent includes slit pores between graphite layers at a graphite layer spacing that increases an activation energy required for diborane degradation relative to an activation energy of degradation of non-adsorbed gaseous diborane at ambient pressure, and at the same temperature.
Abstract:
A system and method for ion implantation is described, which includes a gas or gas mixture including at least one ionizable gas used to generate ionic species and an arc chamber that includes two or more different arc chamber materials. Using the system ionic species are generated in the arc chamber with liner combination, and one or more desired ionic species display a higher beam current among the ionic species generated, which is facilitated by use of the different materials. In turn improved implantation of the desired ionic species into a substrate can be achieved. Further, the system can minimize formation of metal deposits during system operation, thereby extending source life and promoting improved system performance.
Abstract:
Described are storage and dispensing systems, and related methods, for storing and selectively dispensing high purity reagent gas from a storage vessel in which the reagent gas is held in sorptive relationship to pyrolyzed carbon adsorption particles.
Abstract:
A storage vessel to contain reagent material. The storage vessel includes a vessel with a bottom, a top, an outlet at the top, sidewalls extending from the bottom to the top, a valve at the outlet, and an interior defined by the bottom, the top, and the sidewalls, the interior including a volume, and an extension tube having a first end engaged with the valve and a second end located toward a center of the interior volume from the first end such that, regardless of orientation of the vessel, the second end is above at least 25 percent of a volume of the interior volume.
Abstract:
The current disclosure is directed to methods and assemblies configured to deliver a mixture of germanium tetrafluoride (GeF4) and hydrogen (H2) gases to an ion implantation apparatus, so H2 is present in an amount in the range of 25%-67% (volume) of the gas mixture, or the GeF4 and H2 are present in a volume ratio (GeF4:H2) in the range of 3:1 to 33:67. The use of the H2 gas in an amount in mixture or relative to the GeF4 gas prevents the volatilization of cathode material, thereby improving performance and lifetime of the ion implantation apparatus. Gas mixtures according to the disclosure also result in a significant Ge+ current gain and W+ peak reduction during an ion implantation procedure.
Abstract:
A system and method for ion implantation is described, which includes a gas or gas mixture including at least one ionizable gas used to generate ionic species and an arc chamber that includes two or more different arc chamber materials. Using the system ionic species are generated in the arc chamber with liner combination, and one or more desired ionic species display a higher beam current among the ionic species generated, which is facilitated by use of the different materials. In turn improved implantation of the desired ionic species into a substrate can be achieved. Further, the system can minimize formation of metal deposits during system operation, thereby extending source life and promoting improved system performance.
Abstract:
Apparatus and method for use of solid dopant phosphorus and arsenic sources and higher order phosphorus or arsenic implant source material are described. In various implementations, solid phosphorus-comprising or arsenic-comprising materials are provided in the ion source chamber for generation of dimer or tetramer implant species. In other implementations, the ion implantation is augmented by use of a reactor for decomposing gaseous phosphorus-comprising or arsenic-comprising materials to form gas phase dimers and tetramers for ion implantation.
Abstract:
An apparatus is described, as including a reaction region for contacting a reactant gas with a reactive solid under conditions effective to form an intermediate product, and an opening for allowing an unreacted portion of the gaseous reagent and the intermediate product to exit the reaction region. The apparatus can be beneficially employed to form a final product as a reaction product of the intermediate product and the reactant gas. The reaction of the reactant gas and reactive solid can be conducted in a first reaction zone, with the reaction of the reactant gas and intermediate product conducted in a second reaction zone. In a specific implementation, the reaction of the reactant gas and intermediate product is reversible, and the reactant gas and intermediate product are flowed to the second reaction zone at a controlled rate or in a controlled manner, to suppress back reaction forming the reactive solid.