摘要:
Provided are a purification method and purification apparatus for an alkaline treatment liquid for a semiconductor substrate, which use adsorption purification means that can purify various alkaline treatment liquids to be used for treating semiconductor substrates for various purposes so as to have an ultrahigh purity, in particular, an Fe concentration in a ppq region, and that is excellent in chemical resistance and mechanical strength. The adsorption purification means is purification means for an alkaline treatment liquid for treating a semiconductor substrate for various purposes at the time of producing, for example, a semiconductor substrate or a semiconductor device. In the purification method and purification apparatus for an alkaline treatment liquid for a semiconductor substrate, an alkaline treatment liquid is brought into contact with silicon carbide crystal surfaces in the absorption purification means, for example, an alkaline treatment liquid is allowed to flow through a gap between adsorbing plate laminates (2) whose both surfaces are CVD silicon carbide surfaces, thereby removing metal impurities contained in the alkaline treatment liquid through adsorption of the metal impurities to the silicon carbide crystal surfaces.
摘要:
A method and an apparatus for removing an organic film such as a resist film from a substrate surface are provided. These are very safe even at high temperatures, and use a treatment liquid which can be recycled and reused. A treatment liquid typically formed from liquid ethylene carbonate, propylene carbonate, or a liquid mixture of these two compounds, and in particular such a treatment liquid containing dissolved ozone, is contacted with a substrate with an organic film, and the organic film is removed. Furthermore, an apparatus of the present invention (A) a treatment liquid delivery device for transporting the treatment liquid to a treatment area, (B) a film contact device for bringing the treatment liquid into contacting with the organic film surface of the substrate within the treatment area, (C) a liquid circulation device for recycling treatment liquid discharged from the treatment area and returning the recycled liquid to the treatment area via one or more temporary storage devices, and (D) an ozone dissolution device for bringing ozone containing gas into contact with the treatment liquid either within the treatment area and/or within the temporary storage devices.
摘要:
An apparatus for producing silicon single crystal from melted silicon by the pull-up process using a seed crystal, wherein at least a portion of a device in contact with the melted silicon includes a layer of silicon nitride precipitated from gaseous phase and comprising 20% or above of .beta. phase, or comprising 80% or above of .alpha. phase whose crystal grains have grain diameters of 5 .mu.m or above at a ratio of 10% or more.
摘要:
A surface-treating agent formed of an aqueous solution containing 0.01 to 20% by weight of trialkyl(hydroxyalkyl) ammonium hydroxide. The treating agent is adapted to be used for the effective removal of organic and inorganic contaminants deposited on the surface of intermediate semiconductor products obtained in the respective steps of manufacturing a semiconductor device and the efficient etching of a metal layer used as wiring. Further, it can be used for the elimination of those portions of a positive working photoresist film coated on the surface of the intermediate semiconductor products which are and are not exposed to a light by controlling its concentration.
摘要:
A method and an apparatus for removing an organic film, such as a resist film, from a substrate surface are provided wherein a treatment liquid containing dissolved ozone, and preferably formed from liquid ethylene or propylene carbonate, or both, is contacted with the substrate having the organic film, and the organic film removed, wherein the apparatus contains (A) a treatment liquid delivery device, (B) a film contact device, (C) a liquid circulation device and (D) an ozone dissolution device.
摘要:
A process tube that is impermeable to impurities for use in the manufacture of semiconductor devices. The process tube is made of sintered silicon carbide and it may optionally be infiltrated with elemental silicon. The inner surface of the process tube includes a layer of high density silicon carbide to prevent diffusion of impurity species through the walls of the process tube.
摘要:
A surface-treating agent formed of an aqueous solution containing 0.01 to 20% by weight of trialkyl(hydroxyalkyl) ammonium hydroxide. The treating agent is adapted to be used for the effective removal of organic and inorganic contaminants deposited on the surface of intermediate semiconductor products obtained in the respective steps of manufacturing a semiconductor device and the efficient etching of a metal layer used as wiring. Further, it can be used for the elimination of those portions of a positive working photoresist film coated on the surface of the intermediate semiconductor products which are and are not exposed to a light by controlling its concentration.
摘要:
An electronic device substrate, such as a semiconductor silicon wafer or a liquid crystal glass substrate, with a surface which has just undergone cleaning treatment and which is covered with a clean oxide or nitride film which will readily adsorb organic contaminants is treated with an aqueous solution containing choline, or alternatively a similar substrate which has not been cleaned is treated with a treatment solution comprising a SC-1 solution to which choline has been added. Following drying, a surface concentration of choline of between 5×1010 molecules˜7×1012 molecules/cm2 is adsorbed onto the substrate surface. This treatment suppresses organic contamination of the substrate from the atmosphere. As a result, the surface carbon concentration of an electronic device substrate can be suppressed to a value of no more than approximately 3×1013 atoms/cm2, even for manufacturing processes carried out in typical clean rooms with no chemical filters installed.
摘要翻译:具有刚刚经过清洗处理并被容易吸附有机污染物的清洁氧化物或氮化物膜覆盖的表面的诸如半导体硅晶片或液晶玻璃基板的电子器件基板用水溶液 或者可替代地,还没有被清洁的类似的基质用包含已加入胆碱的SC-1溶液的处理溶液进行处理。 干燥后,5×10 10分子〜7×10 12分子/ cm 2之间的胆碱的表面浓度被吸附在基材表面上。 这种处理抑制了大气中底物的有机污染。 结果,电子器件衬底的表面碳浓度可以被抑制在不超过约3×10 13原子/ cm 2的值,即使对于所携带的制造工艺 在没有安装化学过滤器的典型洁净室中。
摘要:
A method of removing surface-deposited contaminants, comprising bringing an ozone-containing treating solution into contact with the surface of a treating target on which contaminants have deposited. The ozone-containing treating solution comprises an organic solvent having a partition coefficient to ozone in a gas, of 0.6 or more, and ozone having been dissolved in the solvent. Contaminants having deposited on the surfaces of various articles including substrates for electronic devices, such as semiconductor substrates and substrates for liquid crystal display devices can be removed by room-temperature and short-time treatment in a high safety and a good efficiency.
摘要:
An apparatus is disclosed which is used for total reflection fluorescent X-ray analysis on a liquid drop-like sample containing very small amounts of impurities. The apparatus comprises a heat-resistant thin sheet containing an element or elements, as a principal component, not detected on total reflection fluorescent X-ray analysis and an x-ray source directing an X-ray as an incident X-ray at a liquid drop-like sample put on the sheet and containing very small amounts of impurities whereby the liquid drop-like sample is evaporated to a dried solid for the total reflection fluorescent X-ray analysis to be performed there.