摘要:
A method of filling high ratio trenches on a substrate is described. First, an oxidizable layer is deposited on the substrate. Thereafter, a trench fill oxide is deposited on the substrate and on the oxidizable layer. Afterwards, the resulting structure is annealed using an oxygen containing gas such that the oxidizable layer is oxidized.
摘要:
The present invention provides a fabrication method for a semiconductor structure having the steps of providing a semiconductor substrate (1); providing and patterning a silicon nitride layer (3) on the semiconductor substrate (1) as topmost layer of a trench etching mask; forming a trench (5) in a first etching step by means of the trench etching mask; conformally depositing a liner layer (10) made of silicon oxide above the resulting structure, which leaves a gap (SP) reaching into the depth in the trench (5); carrying out a V plasma etching step for forming a V profile of the line layer (10) in the trench (5); wherein the liner layer (10) is pulled back to below the top side of the silicon nitride layer (3); an etching gas mixture comprises C5F8, O2 and an inert gas is used in the V plasma etching step; the ratio (V) of C5F8/O2 lies between 2.5 and 3.5; and the selectivity of the V plasma etching step between silicon oxide and silicon nitride is at least 10.
摘要翻译:本发明提供一种半导体结构的制造方法,其具有提供半导体衬底(1)的步骤。 在半导体衬底(1)上提供和图案化氮化硅层(3)作为沟槽蚀刻掩模的最顶层; 在第一蚀刻步骤中通过沟槽蚀刻掩模形成沟槽(5); 在所得结构上保形地沉积由氧化硅制成的衬垫层(10),留下在沟槽(5)中深入的间隙(SP); 执行V等离子体蚀刻步骤,用于在沟槽(5)中形成线层(10)的V轮廓; 其中所述衬垫层(10)被拉回到所述氮化硅层(3)的顶侧的下方; 蚀刻气体混合物包括C 5 C 8 O 2 O 2,在V等离子体蚀刻步骤中使用惰性气体; C 5 / C 2 O 2的比例(V)在2.5和3.5之间; 并且氧化硅和氮化硅之间的V等离子体蚀刻步骤的选择性为至少10。
摘要:
The present invention provides a fabrication method for a semiconductor structure having the steps of providing a semiconductor substrate (1); providing and patterning a silicon nitride layer (3) on the semiconductor substrate (1) as topmost layer of a trench etching mask; forming a trench (5) in a first etching step by means of the trench etching mask; conformally depositing a liner layer (10) made of silicon oxide above the resulting structure, which leaves a gap (SP) reaching into the depth in the trench (5); carrying out a V plasma etching step for forming a V profile of the line layer (10) in the trench (5); wherein the liner layer (10) is pulled back to below the top side of the silicon nitride layer (3); an etching gas mixture comprises C5F8, O2 and an inert gas is used in the V plasma etching step; the ratio (V) of C5F8/O2 lies between 2.5 and 3.5; and the selectivity of the V plasma etching step between silicon oxide and silicon nitride is at least 10.
摘要翻译:本发明提供一种半导体结构的制造方法,其具有提供半导体衬底(1)的步骤。 在半导体衬底(1)上提供和图案化氮化硅层(3)作为沟槽蚀刻掩模的最顶层; 在第一蚀刻步骤中通过沟槽蚀刻掩模形成沟槽(5); 在所得结构上保形地沉积由氧化硅制成的衬垫层(10),留下在沟槽(5)中深入的间隙(SP); 进行用于在沟槽(5)中形成线层(10)的V轮廓的V等离子体蚀刻步骤; 其中所述衬垫层(10)被拉回到所述氮化硅层(3)的顶侧的下方; 蚀刻气体混合物包括C 5 C 8 O 2 O 2,在V等离子体蚀刻步骤中使用惰性气体; C 5 / C 2 O 2的比例(V)在2.5和3.5之间; 并且氧化硅和氮化硅之间的V等离子体蚀刻步骤的选择性为至少10。
摘要:
A method for manufacturing integrated circuit devices, optical devices, micromachines and mechanical precision devices, the said method comprising the steps of (1) providing a substrate having patterned material layers having line-space dimensions of 50 nm and less and aspect ratios of >2; (2) providing the surface of the patterned material layers with a positive or a negative electrical charge by contacting the substrate at least once with an aqueous, fluorine-free solution S containing at least one fluorine-free cationic surfactant A having at least one cationic or potentially cationic group, at least one fluorine-free anionic surfactant A having at least one anionic or potentially anionic group, or at least one fluorine-free amphoteric surfactant A; and (3) removing the aqueous, fluorine-free solution S from the contact with the substrate.
摘要:
Aqueous alkaline composition free from organic solvents and metal ion-free silicates, the said compositions comprising (A) a thioamino acid having at least one primary amino group and at least one mercapto group, (B) a quaternary ammonium hydroxide, (C) a chelating and/or corrosion inhibiting agent selected from the group consisting of aliphatic and cycloaliphatic amines having at least two primary amino groups, and aliphatic and cycloaliphatic amines having at least one hydroxy group, (D) a nonionic surfactant selected from the group of acetylenic alcohols, alkyloxylated acetylenic alcohols and alkyloxylated sorbitan monocarboxylic acid mono esters; the use of the alkaline composition for the processing of substrates useful for fabricating electrical and optical devices; and a method for processing substrates useful for fabricating electrical and optical devices making use of the said aqueous alkaline composition.
摘要:
Aqueous, nitrogen-free cleaning composition, preparation and use thereof are provided. The composition having a pH of from 5 to 8 comprises (A) an amphiphilic nonionic, water-soluble or water-dispersible surfactant and (B) a metal chelating agent selected from polycarboxylic acids having at least 3 carboxylic acid groups. The composition is used for removing residues and contaminants from semiconductor substrates.
摘要:
A liquid composition free from N-alkylpyrrolidones and hydroxyl amine and its derivatives, having a dynamic shear viscosity at 50° C. of from 1 to 10 mPas as measured by rotational viscometry and comprising based on the complete weight of the composition, (A) of from 40 to 99.95% by weight of a polar organic solvent exhibiting in the presence of dissolved tetramethylammonium hydroxide (B) a constant removal rate at 50° C. for a 30 nm thick polymeric barrier anti-reflective layer containing deep UV absorbing chromophoric groups, (B) of from 0.05 to
摘要:
Aqueous alkaline cleaning composition free from organic solvents and metal ion-free silicates, the said compositions comprising (A) a thioamino acid having at least one primary amino group and at least one mercapto group, (B) a quaternary ammonium hydroxide, (C) a chelating and/or corrosion inhibiting agent selected from the group consisting of aliphatic and cycloaliphatic amines having at least two primary amino groups, and aliphatic and cycloaliphatic amines having at least one hydroxy group, (D) a nonionic surfactant selected from the group of acetylenic alcohols, alkyloxylated acetylenic alcohols and alkyloxylated sorbitan monocarboxylic acid mono esters; the use of the alkaline cleaning composition for the processing of substrates useful for fabricating electrical and optical devices; and a method for processing substrates useful for fabricating electrical and optical devices making use of the said aqueous alkaline cleaning composition.
摘要:
A liquid composition free from N-alkylpyrrolidones and hydroxyl amine and its derivatives, having a dynamic shear viscosity at 50° C. of from 1 to 10 mPas as measured by rotational viscometry and comprising based on the complete weight of the composition, (A) of from 40 to 99.95% by weight of a polar organic solvent exhibiting in the presence of dissolved tetramethylammonium hydroxide (B) a constant removal rate at 50° C. for a 30 nm thick polymeric barrier anti-reflective layer containing deep UV absorbing chromophoric groups, (B) of from 0.05 to
摘要:
The invention relates to a dielectric layer with a permittivity of 3.5 or less comprising a dielectric obtainable by polymerizing at least one twin monomer comprising a) a first monomer unit which comprises a metal or semimetal, and b) a second monomer unit which is connected to the first monomer unit via a chemical bond, wherein the polymerization involves polymerizing the twin monomer with breakage of the chemical bond and formation of a first polymer comprising the first monomer unit and of a second polymer comprising the second monomer unit, and wherein the first and the second monomer unit polymerize via a common mechanism.