Process of removing ion-implanted photoresist from a workpiece
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01L-021/302
H01L-031/471
H01L-021/312
출원번호
US-0299130
(2002-11-19)
발명자
/ 주소
Cotte, John Michael
McCullough, Kenneth John
Moreau, Wayne Martin
Pope, Keith R.
Simons, John P.
Taft, Charles J.
출원인 / 주소
International Business Machines Corporation
대리인 / 주소
Scully, Scott, Murphy & Presser
인용정보
피인용 횟수 :
6인용 특허 :
12
초록▼
A process of removing photoresist, previously subjected to ion implantation, from the surface of a workpiece. The process involves contacting the workpiece with a composition which includes liquid or supercritical carbon dioxide and between about 2% and about 20% of an alkanol having the structural
A process of removing photoresist, previously subjected to ion implantation, from the surface of a workpiece. The process involves contacting the workpiece with a composition which includes liquid or supercritical carbon dioxide and between about 2% and about 20% of an alkanol having the structural formula CxX2x+1OH, where X is fluorine, hydrogen or mixtures thereof; and x is an integer of 1 to 8, said percentages being by volume, based on the total weight of the composition.
대표청구항▼
1. A process of removing photoresist previously subjected to ion implantation from a workpiece comprising contacting a workpiece, upon which a photoresist, previously subjected to ion implantation, is disposed, with a composition comprising liquid or supercritical carbon dioxide and an alkanol havin
1. A process of removing photoresist previously subjected to ion implantation from a workpiece comprising contacting a workpiece, upon which a photoresist, previously subjected to ion implantation, is disposed, with a composition comprising liquid or supercritical carbon dioxide and an alkanol having the structural formula CxX2x+1OH, where X is fluorine, hydrogen or mixtures thereof; and x is an integer of 1 to 8, wherein said alkanol is present in a concentration in the range of between about 2% and about 20%, said percentages being by volume, based on the total volume of the composition. 2. A process in accordance with claim 1 wherein said alkanol is present in a concentration of between about 5% and about 15%. 3. A process in accordance with claim 2 wherein said alkanol is present in a concentration of between about 8% and about 12%. 4. A process in accordance with claim 1 wherein x is 1 to 4. 5. A process in accordance with claim 4 where X is hydrogen. 6. A process in accordance with claim 5 wherein said alkanol is methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol and t-butanol. 7. A process in accordance with claim 1 wherein said ion implantation to which said photoresist was previously subjected is at least about 1015ions/cm2. 8. A process in accordance with claim 1 wherein said composition is free of any stripping agent. 9. A process of removing photoresist previously subjected to ion implantation from a workpiece comprising contacting a workpiece, upon which a photoresist, previously subjected to ion implantation, with carbon dioxide and an alkanol having the structure formula CxX2x+1OH, where X is hydrogen, fluorine or mixtures thereof; and x is an integer of 1 to 8, said alkanol present in a concentration of between about 2% and about 20%, said percentages being by volume, based on the total volume of said carbon dioxide and said alkanol, at a pressure in the range of between about 5000 psi and about 7,500 psi and a temperature in the range of between about 60° C. and about 100° C. 10. A process in accordance with claim 9 wherein said workpiece is contacted at a pressure in the range of between about 5,500 psi and about 6,500 psi and a temperature in the range of between about 65° C. and about 85° C. 11. A process in accordance with claim 10 wherein said alkanol is present in a concentration of between about 5% and about 15%. 12. A process in accordance with claim 11 wherein x is an integer of 1 to 4. 13. A process in accordance with claim 12 wherein said workpiece is contacted at a pressure of about 5,800 psi and about 6,200 psi and a temperature of about 70° C. and about 75° C. 14. A process in accordance with claim 9 wherein said alkanol is methanol.
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이 특허에 인용된 특허 (12)
Rose Peter H. ; Sferlazzo Piero ; van der Heide Robert G., Aerosol surface processing.
DeSimone Joseph M. ; Romack Timothy J. ; Betts Douglas E. ; McClain James B., Cleaning process using carbon dioxide as a solvent and employing molecularly engineered surfactants.
William H. Mullee ; Maximilian A. Biberger ; Paul E. Schilling, Removal of photoresist and residue from substrate using supercritical carbon dioxide process.
Colburn, Matthew E.; Shneyder, Dmitriy; Siddiqui, Shahab, Development or removal of block copolymer or PMMA-b-S-based resist using polar supercritical solvent.
Colburn,Matthew E.; Shneyder,Dmitriy; Siddiqui,Shahab, Development or removal of block copolymer or PMMA-b-S-based resist using polar supercritical solvent.
Hilkene, Martin A.; Foad, Majeed A.; Scotney-Castle, Matthew D.; Gouk, Roman; Verhaverbeke, Steven; Porshnev, Peter I., Method for removing implanted photo resist from hard disk drive substrates.
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