摘要:
The present invention provides a method and apparatus for manufacturing halogen gas using a plasma chemical reaction, with the features of having simplicity, practicality, and maintaining safety in handling source materials and of being able to manufacture halogen gas in the same facility where halogen gas is used, and also provides a halogen gas circulatory and recovery system capable of circulating and using halogen gas efficiently. After the gas expressed in the chemical formula AiXj (A represents metallic element or semiconductor element, X represents halogen element, and i and j represent integers) is introduced into a reaction container in vacuum, plasmas are generated in the reaction container to produce a plasma chemical reaction. Fine particles produced by the plasma chemical reaction and containing an element other than halogen element as the major constituent are removed from the reaction container so as to generate halogen gas in the reaction container.
摘要:
The present invention provides a method and apparatus for manufacturing halogen gas using a plasma chemical reaction, with the features of having simplicity, practicality, and maintaining safety in handling source materials and of being able to manufacture halogen gas in the same facility where halogen gas is used, and also provides a halogen gas circulatory and recovery system capable of circulating and using halogen gas efficiently. After the gas expressed in the chemical formula AiXj (A represents metallic element or semiconductor element, X represents halogen element, and i and j represent integers) is introduced into a reaction container in vacuum, plasmas are generated in the reaction container to produce a plasma chemical reaction. Fine particles produced by the plasma chemical reaction and containing an element other than halogen element as the major constituent are removed from the reaction container so as to generate halogen gas in the reaction container.
摘要:
A plasma processing apparatus is furnished with a reactor which is furnished with a susceptor 12, a reaction gas delivery mechanism which delivers reaction gas to the inside of the reactor, a pumping mechanism 24 which pumps out an interior of the reactor, and a plasma-generating mechanism. The reactor is made of metal, the plasma-generating mechanism includes an at least single-winding coil 16 which produces an induced electric field, and the coil is established within the reactor and surrounding the plasma-generating space in a state surrounded by dielectrics parts 15 and 17.
摘要:
A substrate is set at a predetermined temperature in a plasma treatment chamber, then the inside of the plasma treatment chamber is regulated at a reduced pressure containing at least a silicon hydride gas and a hydrogen gas, a high-frequency electric field is applied to form a silicon film of nanometer scale thickness composed of fine silicon crystals and amorphous silicon on the substrate. Thereafter, application of the high-frequency electric field is terminated, then the inside of the plasma treatment chamber is replaced by an oxidizing or nitriding gas, and a high-frequency electric field is applied again for plasma oxidizing treatment or plasma nitriding treatment of the silicon film formed on the substrate.Thereby, a silicon nanocrystalline structure can be formed on a silicon substrate by using a process of producing silicon integrated circuits with achieving high luminous efficiency, and terminating reliably with oxygen or nitrogen on the surface thereof. According to the method of the present invention, the particle diameter of the oxygen- or nitrogen-terminated silicon nanocrystals can be regulated in an accuracy of 1 to 2 nm, the density thereof per unit area can be increased, and the silicon nanocrystalline structure can be produced easily and inexpensively.
摘要:
A method of processing a substrate has the following processes. After depositing a thin film onto a substrate by a CVD method, the front surface of the substrate is brought close to a gas supply surface of a gas supply mechanism to have a desired interval without making contact between the front surface and the gas supply surface. Afterwards, an etching gas is supplied into a back space of the substrate to generate plasma there, and further a purge gas is also supplied into a space between the gas supply surface and the substrate so that the purge gas flows into the back space through a peripheral-edge region of the substrate. This purge gas prevents radicals included in the plasma from diffusing into the space between the gas supply surface and the substrate.
摘要:
A substrate is set at a predetermined temperature in a plasma treatment chamber, then the inside of the plasma treatment chamber is regulated at a reduced pressure containing at least a silicon hydride gas and a hydrogen gas, a high-frequency electric field is applied to form a silicon film of nanometer scale thickness composed of fine silicon crystals and amorphous silicon on the substrate. Thereafter, application of the high-frequency electric field is terminated, then the inside of the plasma treatment chamber is replaced by an oxidizing or nitriding gas, and a high-frequency electric field is applied again for plasma oxidizing treatment or plasma nitriding treatment of the silicon film formed on the substrate. Thereby, a silicon nanocrystalline structure can be formed on a silicon substrate by using a process of producing silicon integrated circuits with achieving high luminous efficiency, and terminating reliably with oxygen or nitrogen on the surface thereof. According to the method of the present invention, the particle diameter of the oxygen- or nitrogen-terminated silicon nanocrystals can be regulated in an accuracy of 1 to 2 nm, the density thereof per unit area can be increased, and the silicon nanocrystalline structure can be produced easily and inexpensively.
摘要:
A plasma processing system is comprised of a reaction vessel in which are provided a parallel high frequency electrode and ground electrode. The ground electrode is fixed at a ground potential portion, that is, a flange, by a conductive support column. A connection portion from the ground electrode to the ground potential portion, for example, the portions other than the surface of the ground electrode and the surface of the support column etc. are covered by an insulator serving as a high frequency power propagator while the surface of the insulator is covered completely by a conductive member except at the portion for introducing the high frequency power. In this plasma processing system, it is possible to reliably prevent undesirable discharge from occurring at the rear surface of the ground electrode when processing a substrate mounted on the ground electrode to deposit a film using a high frequency power in the VHF band.
摘要:
A plasma treatment apparatus has a reaction vessel (11) provided with a top electrode (13) and a bottom electrode (14), and the first electrode is supplied with a VHF band high frequency power from a VHF band high frequency power source (32), while the bottom electrode on which a substrate (12) is loaded and is moved by a vertical movement mechanism. The plasma treatment system has a controller (36) which, at the time of a cleaning process after forming a film on the substrate (12), controls a vertical movement mechanism to move the bottom electrode to narrow the gap between the top electrode and bottom electrode and form a narrow space and starts cleaning by a predetermined high density plasma in that narrow space. In the cleaning process, step cleaning is performed. Due to this, the efficiency of utilization of the cleaning gas is increased, the amount of exhaust gas is cut, and the cleaning speed is raised. Further, the amount of the process gas used is cut and the process cost is reduced.
摘要:
A substrate processing device includes a reactor equipped with a substrate holder and a gas feed electrode facing the substrate holder, a pump mechanism for pumping out an interior of the reactor, a reaction gas feed mechanism for introducing a reaction gas through the gas feed electrode into the interior of said reactor, a high frequency power source for applying a high frequency power to said gas feed electrode, a connecting port formed in a sidewall of said reactor, the pump mechanism is connected to the connecting port formed in the sidewall of the reactor, and a space between the gas feed electrode and the substrate holder is set so that a conductance between the gas feed electrode and the substrate holder is lower than a conductance between the sidewall of the reactor and the gas feed electrode.
摘要:
A method of depositing a thin film on a substrate by plasma-enhanced CVD is provided. The method includes introducing H.sub.2 or H.sub.2 and N.sub.2 into a plasma-enhanced CVD reactor; generating a plasma in the reactor; introducing a reaction gas comprising TiCl.sub.4, silane, and either H.sub.2 or H.sub.2 and N.sub.2 into the reactor; and depositing a Ti film or a TiN film containing Si on a substrate in the reactor.