Cleaning compositions

Patent metadata

Field	Value
Publication number	US-10752867-B2
Application number	US-201916278875-A
Country	US
Kind code	B2
Filing date	Feb 19, 2019
Priority date	Mar 28, 2018
Publication date	Aug 25, 2020
Grant date	Aug 25, 2020

Abstract

This disclosure relates to a cleaning composition that contains 1) at least one redox agent; 2) at least one alkylsulfonic acid or a salt thereof, the alkylsulfonic acid containing an alkyl group substituted by OH or NH2; 3) at least one aminoalcohol; 4) at least one corrosion inhibitor; 5) at least one water soluble organic solvent; 6) water; and 7) optionally, at least one pH adjusting agent.

First claim

What is claimed is:

1. A cleaning composition, comprising:
1) at least one redox agent;
2) at least one alkylsulfonic acid or a salt thereof, the alkylsulfonic acid comprising an alkyl group substituted by OH or NH 2 ;
3) at least one aminoalcohol;
4) at least one corrosion inhibitor;
5) at least one organic solvent;
6) water; and
7) optionally, at least one pH adjusting agent.

2. The composition of claim 1 , wherein the composition has a pH from about 8 to about 11.

3. The composition of claim 1 , wherein the at least one alkylsulfonic acid comprises an alkylsulfonic acid of formula (I):
R—SO 3 H  (I),

in which R is C 1 -C 10 alkyl substituted by at least one substituent selected from the group consisting of OH and NH 2 .

4. The composition of claim 3 , wherein R is C 1 -C 4 alkyl substituted by at least one OH.

5. The composition of claim 1 , wherein the at least one alkylsulfonic acid or a salt thereof comprises HO(CH 2 ) 2 SO 3 H or HO(CH 2 ) 2 SO 3 NH 4 .

6. The composition of claim 1 , wherein the at least one alkylsulfonic acid or a salt thereof is from about 0.3% by weight to about 5% by weight of the composition.

7. The composition of claim 1 , wherein the at least one redox agent comprises hydroxylamine.

8. The composition of claim 1 , wherein the at least one redox agent is from about 6% by weight to about 15% by weight of the composition.

9. The composition of claim 1 , wherein the at least one aminoalcohol comprises ethanolamine or 2-(2-aminoethoxy)ethanol.

10. The composition of claim 1 , wherein the at least one aminoalcohol is from about 5% by weight to about 10% by weight of the composition.

11. The composition of claim 1 , wherein the at least one corrosion inhibitor comprises benzotriazole optionally substituted by at least one substituent selected from the group consisting of alkyl groups, aryl groups, halogen groups, amino groups, nitro groups, alkoxy groups, and hydroxyl groups.

12. The composition of claim 1 , wherein the at least one corrosion inhibitor comprises a compound selected from the group consisting of benzotriazole, 5-aminotetrazole, 1-hydroxybenzotriazole, 5-phenylthiol-benzotriazole, 5-chlorobenzotriazole, 4-chlorobenzotriazole, 5-bromobenzotriazole, 4-bromobenzotriazole, 5-fluorobenzotriazole, 4-fluorobenzotriazole, naphthotriazole, tolyltriazole, 5-phenyl-benzotriazole, 5-nitrobenzotriazole, 4-nitrobenzotriazole, 3-amino-5-mercapto-1,2,4-triazole, 2-(5-amino-pentyl)-benzotriazole, 1-amino-benzotriazole, 5-methylbenzotriazole, benzotriazole-5-carboxylic acid, 4-m ethylbenzotriazole, 4-ethylbenzotriazole, 5-ethylbenzotriazole, 4-propylbenzotriazole, 5-propylbenzotriazole, 4-isopropylbenzotriazole, 5-isopropylbenzotriazole, 4-n-butylbenzotriazole, 5-n-butylbenzotriazole, 4-isobutylbenzotriazole, 5-isobutylbenzotriazole, 4-pentylbenzotriazole, 5-pentylbenzotriazole, 4-hexylbenzotriazole, 5-hexylbenzotriazole, 5-methoxybenzotriazole, 5-hydroxybenzotriazole, dihydroxypropylbenzotriazole, 1-[N,N-bis(2-ethylhexyl)aminomethyl]-benzotriazole, 5-t-butyl benzotriazole, 5-(1′,1′-diimethylpropyl)-benzotriazole, 5-(1′,1′,3′-trimethylbutyl)benzotriazole, 5-n-octyl benzotriazole, and 5-(1′,1′,3′,3′-tetramethylbutyl)benzotriazole.

13. The composition of claim 1 , wherein the at least one corrosion inhibitor is from about 0.1% by weight to about 2% by weight of the composition.

14. The composition of claim 1 , wherein the composition comprises the at least one pH adjusting agent and the at least one pH adjusting agent comprises an acid.

15. The composition of claim 1 , wherein the composition comprises the at least one pH adjusting agent and the at least one pH adjusting agent is from about 1% by weight to about 10% by weight of the composition.

16. The composition of claim 1 , wherein the at least one organic solvent comprises a solvent selected from the group consisting of water soluble alcohols, water soluble ketones, water soluble esters, and water soluble ethers.

17. The composition of claim 1 , wherein the at least one organic solvent comprises a solvent selected from the group consisting of alkylene glycols and alkylene glycol ethers.

18. The composition of claim 1 , wherein the at least one organic solvent is from about 30% by weight to about 50% by weight of the composition.

19. The composition of claim 1 , wherein water is from about 20% by weight to about 50% by weight of the composition.

20. A method, comprising:
contacting a semiconductor substrate containing post etch residues or post ashing residues with a cleaning composition of claim 1 .

21. The method of claim 20 , wherein the semiconductor substrate further comprises at least one material selected from the group consisting of Cu, Co, W, AlOx, AlN, AlOxNy, Ti, TiN, Ta, TaN, TiOx, ZrOx, HfOx, and TaOx.

22. The method of claim 20 , further comprising rinsing the semiconductor substrate with a rinse solvent after the contacting step.

23. The method of claim 22 , further comprising drying the semiconductor substrate after the rinsing step.

24. The method of claim 20 , further comprising forming a semiconductor device from the semiconductor substrate.

Assignees

• Fujifilm Electronic Mat Usa Inc

Inventors

• Dory Thomas
• Bjelopavlic Mick
• Guske Joshua
• Takahashi Kazutaka

Classifications

• H10P70/10

  Cleaning before device manufacture, i.e. Begin-Of-Line process · CPC title

• H10P70/234

  the processing being the formation of vias or contact holes · CPC title

• C11D2111/22

  Electronic devices, e.g. PCBs or semiconductors · CPC title

• C11D7/34

  containing sulfur · CPC title

• C11D7/3281 Primary

  Heterocyclic compounds · CPC title