摘要:
There is disclosed a semiconductor device cleaning method involving placing a cleaning solution containing 24 wt. % sulfuric acid, 5 wt. % hydrogen peroxide, 0.02 wt. % hydrogen fluoride, 0.075 wt. % n-dodecylbenzenesulfonic acid, and water into a quartz processing vessel and heating to no more than 100° C. A silicon wafer is immersed into the cleaning solution for 10 minutes and then washed by demineralized water for about 7 minutes. The surfaces of foreign particles on the wafer are etched by hydrogen fluoride, and n-dodecylbenzenesulfonic acid combines with the etched surfaces by sulfate ester bonding. The apparent diameter of the foreign particles increases and the repulsive force caused by zeta potential etc. increases, so that the foreign particles are unlikely to adhere to the surface of the silicon wafer permitting the foreign particles to be easily washed away in a water cleaning step.
摘要:
A method of removal of polymers of the type including bromine, chlorine, silicon, and carbon, present on a semiconductor wafer partly covered with resist, including of rotating the wafer in its plane around its axis, in an enclosure under a controlled atmosphere, at ambient temperature, including the steps of rotating the wafer at a speed included between 500 and 2000 CPM in an enclosure filled with nitrogen; sprinkling the wafer with water, substantially at the center of the wafer; introducing hydrofluoric acid during a determined cleaning time, while maintaining the sprinkling; and rinsing the wafer by continuing the sprinkling to remove any trace of hydrofluoric acid from the wafer, at the end of the cleaning time.
摘要:
A photoresist stripping liquid composition effective for removing resist residues after dry etching and resist ashing in the manufacturing processes of semiconductor devices, which does not corrode the different metallic materials, and wherein are comprised, as active component, one or more polycarboxylic acids and/or their salts selected from the group consisting of aliphatic polycarboxylic acids and their salts as well as aminopolycarboxylic acids and their salts.
摘要:
A corroded superalloy or heat resistant steel part, in particular a gas turbine component like a gas turbine blade, having a surface with products or corrosion is refurbished. The invention the surface is cleaned, in particular mechanically or chemically, and an aluminide coating is applied to the cleaned surface. Subsequently, the aluminide coating is removed, whereby all products of corrosion which have still remained in the part to be refurbished are removed as well.
摘要:
An organomineral decontamination gel that is used to decontaminate surfaces, in particular metal surfaces. The organomineral gel is made up of a colloid solution containing the combination of a mineral viscosing agent and an organic viscosing agent (coviscosant) chosen from among hydrosoluble organic polymers and surfactants. The presence of an organic viscosing agent improves the rheological properties of gels and substantially reduces their mineral content which generates smaller quantities of solid waste. A decontamination process for metal surface which entails applying the organomineral gel onto the surface to be decontaminated, maintaining this gel on the surface and removing the gel from the surface in particular by rinsing is also provided.
摘要:
Disclosed a method for radioactive decontamination of a steel surface, which is performed by bringing the surface to be decontaminated into contact with a pickling solution comprising a first iron oxidation agent, wherein bringing into contact being achieved by means of the direct continuous introduction into the pickling solution of a gas comprising a second oxidation agent, and a device for implementing the said method.
摘要:
A method for cleaning a silicon wafer by a wet bench method with improved cleaning efficiency and without oxide formation is disclosed. In the method, the wafer may first be cleaned in a first cleaning solution that includes a base or an acid, and then the wafer is rinsed in a second solution that includes DI water and ozone. The ozone concentration in the DI water may be between about 1 ppm and about 20 ppm, and preferably between about 3 ppm and about 10 ppm. A diluted HF cleaning step may be utilized after the ozone/DI water rinsing step to remove any possible oxide formation on the silicon surface before a final rinsing step and drying step.
摘要:
A method for the cleaning of a substrate having an organic compound such as a hydrogenic compound thereon, the method comprising the step of applying to the substrate a composition comprising a lignosulfonate and a microbially effective amount of microorganisms in an aqueous solution. The method is ideally practiced to achieve the microbial degradation of hydrocarbons and can be used as a parts washing solution and for cleaning substrates such as floors, decks of vessels, etc.
摘要:
A method for removing a ruthenium-containing metal includes the step of applying a remover to a semiconductor substrate. The remover includes a cerium (IV) nitrate salt and nitric acid.
摘要:
A process for the chemical treatment of semiconductor wafers in the presence of HF and then in the presence of ozone, in particular for the cleaning of silicon semiconductor wafers, is such that the semiconductor wafers that are treated with the medium containing ozone are free of aqueous HF.