Abstract:
An etching method containing, at the time of processing a substrate having a first layer containing titanium nitride (TiN) and a second layer containing a transition metal, selecting a substrate in which a surface oxygen content of the first layer is from 0.1 to 10% by mole, and applying an etching liquid containing a hydrofluoric acid compound and an oxidizing agent to the substrate and thereby removing the first layer.
Abstract:
An etching liquid for processing a substrate having a first layer containing titanium nitride (TiN) and a second layer containing at least one metal selected from transition metals belonging to group 3 to group 11 of the periodic table thereby removing the first layer selectively, wherein the etching liquid contains a hexafluorosilicic acid compound, and an oxidizing agent of which concentration is 0.05% by mass or more and less than 10% by mass.
Abstract:
A method for manufacturing a semiconductor substrate product having: providing an etching liquid containing water, a hydrofluoric acid compound and an organic solvent, and applying the etching liquid to a semiconductor substrate, the semiconductor substrate having a silicon layer and a silicon oxide layer, the silicon layer containing an impurity, and thereby selectively etching the silicon oxide layer.
Abstract:
An object of the present invention is to provide a cleaning composition that suppresses a surface roughness of a region including Mo and has excellent removability of Mo-based residues in a case of being used in a treatment of an Mo-containing substrate. The cleaning composition of an embodiment of the present invention is a cleaning composition used in a treatment of a molybdenum-containing substrate, the cleaning composition including an organic acid and organic amine compounds having at least one group selected from the group consisting of a primary amino group, a secondary amino group, and a tertiary amino group, in which the cleaning composition includes two or more kinds of the organic amine compounds.
Abstract:
An object of the present invention is to provide a composition in which, even in a case of being used after a lapse of a predetermined period from production, removal performance of residues and anticorrosion properties of a tungsten-containing film are excellent, and deterioration of electrical properties of the tungsten-containing film can be suppressed; and to provide a manufacturing method of a semiconductor element. The composition of the present invention contains sorbic acid, citric acid, an amine-containing compound which is at least one selected from the group consisting of ammonia, an organic amine, a quaternary ammonium compound, and salts thereof, a specific compound which has at least one group selected from the group consisting of a phosphono group and a phosphoric acid group, and water, in which a pH at 25° C. is 4.0 to 9.0.
Abstract:
Provided are an analysis method of a photosensitive composition, with which a trace amount of metal atoms contained in the photosensitive composition can be easily detected, a production method of a photosensitive composition, and a manufacturing method of an electronic device. The analysis method of a photosensitive composition includes a step 1 of applying a photosensitive composition onto a substrate to form a coating film, a step 2 of removing the coating film from the substrate without exposing the coating film to obtain a coating film-removed substrate, and a step 3 of measuring the number of metal atoms per unit area on the coating film-removed substrate by a total reflection X-ray fluorescence analysis method to obtain a measured value.
Abstract:
An object of the present invention is to provide a cleaning composition which has excellent removability of a residue (particularly, a residue after CMP) and excellent anticorrosion properties of copper; a cleaning method of a semiconductor substrate; and a manufacturing method of a semiconductor element. The cleaning composition of the present invention contains citric acid, 1-hydroxyethane-1,1-diphosphonic acid, a sulfonic acid-based surfactant, and water, in which a mass ratio of a content of the citric acid to a content of the 1-hydroxyethane-1,1-diphosphonic acid is 20 to 150, a mass ratio of the content of the citric acid to a content of the sulfonic acid-based surfactant is 70 to 1,500, and a pH is 0.10 to 4.00.
Abstract:
An object of the present invention is to provide a cleaning liquid for a semiconductor substrate, which has excellent cleaning performance and excellent ruthenium oxide dissolving ability in a case of being applied as a cleaning liquid after a CMP treatment of a semiconductor substrate including a metal film. A cleaning liquid for a semiconductor substrate according to the present invention is a cleaning liquid for a semiconductor substrate, which is used for cleaning a semiconductor substrate, where the cleaning liquid contains at least one purine compound selected from the group consisting of purine and a purine derivative and a compound represented by Formula (A).
Abstract:
A filtering device is for obtaining a chemical liquid by purifying a liquid to be purified and has an inlet portion, an outlet portion, a filter A, a filter B different from the filter A, and a flow path extending from the inlet portion to the outlet portion, in which the filter A and the filter B are arranged in series between the inlet portion and the outlet portion and have, and the filter A is selected from the group consisting of predetermined filters A1, A2, and A3.
Abstract:
An object of the present invention is to provide a composition that exhibits excellent dissolving ability and etching selectivity (particularly, etching selectivity for a Ru-containing substance and other metal-containing substances) to metal-containing substances (particularly, a Ru-containing substance), a kit for preparing the composition, and a method for treating a substrate by using the composition. The composition according to an embodiment of the present invention is a composition for removing metal-containing substances, and contains one or more periodic acid compounds selected from the group consisting of a periodic acid and a salt thereof, an azole compound, and an alkali compound.