KR101396271B1 - 웨이퍼의 세정방법 - Google Patents
웨이퍼의 세정방법 Download PDFInfo
- Publication number
- KR101396271B1 KR101396271B1 KR1020127024857A KR20127024857A KR101396271B1 KR 101396271 B1 KR101396271 B1 KR 101396271B1 KR 1020127024857 A KR1020127024857 A KR 1020127024857A KR 20127024857 A KR20127024857 A KR 20127024857A KR 101396271 B1 KR101396271 B1 KR 101396271B1
- Authority
- KR
- South Korea
- Prior art keywords
- wafer
- protective film
- liquid
- silicon
- cleaning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000004140 cleaning Methods 0.000 title claims abstract description 191
- 238000000034 method Methods 0.000 title claims abstract description 164
- 239000007788 liquid Substances 0.000 claims abstract description 379
- 230000001681 protective effect Effects 0.000 claims abstract description 273
- 239000000126 substance Substances 0.000 claims abstract description 136
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 99
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 99
- 239000010703 silicon Substances 0.000 claims abstract description 99
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 40
- 230000008569 process Effects 0.000 claims abstract description 19
- 239000002253 acid Substances 0.000 claims description 65
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 47
- 229910052718 tin Inorganic materials 0.000 claims description 47
- 230000003647 oxidation Effects 0.000 claims description 38
- 238000007254 oxidation reaction Methods 0.000 claims description 38
- 150000003377 silicon compounds Chemical group 0.000 claims description 34
- 125000000524 functional group Chemical group 0.000 claims description 32
- 229910052736 halogen Inorganic materials 0.000 claims description 31
- 150000002367 halogens Chemical class 0.000 claims description 31
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 25
- 125000004432 carbon atom Chemical group C* 0.000 claims description 23
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 22
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 22
- 229910052757 nitrogen Inorganic materials 0.000 claims description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 20
- 238000009835 boiling Methods 0.000 claims description 20
- 239000001257 hydrogen Substances 0.000 claims description 20
- 229910052739 hydrogen Inorganic materials 0.000 claims description 20
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 20
- 229910052760 oxygen Inorganic materials 0.000 claims description 20
- 239000001301 oxygen Substances 0.000 claims description 20
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 19
- 125000005843 halogen group Chemical group 0.000 claims description 17
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 16
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims description 15
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 13
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 13
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 12
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 12
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- 239000011737 fluorine Substances 0.000 claims description 11
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- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 claims description 11
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 11
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
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- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 9
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
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- 238000002407 reforming Methods 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 4
- 238000004078 waterproofing Methods 0.000 abstract description 23
- 229910052751 metal Inorganic materials 0.000 abstract description 19
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- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 18
- 239000007864 aqueous solution Substances 0.000 description 17
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- 238000006243 chemical reaction Methods 0.000 description 15
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- 150000002170 ethers Chemical class 0.000 description 14
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Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02041—Cleaning
- H01L21/02057—Cleaning during device manufacture
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Cleaning Or Drying Semiconductors (AREA)
Abstract
Description
도2는, 도1 중의 a-a’단면의 일부를 나타낸 것이다.
도3은, 오목부(4)가 보호막 형성용 약액(8)을 유지한 상태의 모식도를 나타내고 있다.
도4는, 보호막이 형성된 오목부(4)에 액체가 유지된 상태의 모식도를 나타내는 도면이다.
2 웨이퍼 표면의 요철 패턴
3 패턴의 볼록부
4 패턴의 오목부
5 오목부의 폭
6 볼록부의 높이
7 볼록부의 폭
8 오목부(4)에 유지된 방수성 보호막 형성용 약액
9 오목부(4)에 유지된 액체
10 방수성 보호막
Claims (11)
- 표면에 요철 패턴이 형성된 웨이퍼에 있어서 상기 요철 패턴의 적어도 오목부 표면의 일부가 티탄(titanium), 질화티탄(窒化titanium), 텅스텐(tungsten), 알루미늄(aluminium), 구리(銅), 주석(朱錫), 질화탄탈(窒化tantalum), 루테늄(ruthenium) 및 실리콘 원소(silicon 元素)를 포함하는 물질로 이루어지는 군으로부터 선택되는 적어도 1종의 물질을 포함하는 웨이퍼의 세정방법으로서,
상기 웨이퍼 표면을 개질(改質)하는 전처리공정(前處理工程),
개질된 상기 웨이퍼 표면에 방수성 보호막(防水性保護膜)을 형성하기 위한 방수성 보호막 형성제를 함유하는 방수성 보호막 형성용 약액을 상기 웨이퍼의 적어도 오목부에 유지시켜, 상기 오목부 표면에 방수성 보호막을 형성하는 방수성 보호막 형성공정
을 포함하고, 상기 방수성 보호막 형성제가 하기 일반식[1]로 표현되는 규소화합물인
것을 특징으로 하는 웨이퍼의 세정방법.
(식[1] 중, R1은, 각각 서로 독립하여, 수소 또는 탄소수가 1∼18의 무치환(無置換) 혹은 수소원소가 할로겐원소로 치환된 탄화수소기이며, X는, 각각 서로 독립하여, 규소원소와 결합하는 원소가 질소인 1가의 관능기(官能基), 규소원소와 결합하는 원소가 산소인 1가의 관능기 및 할로겐기로 이루어지는 군으로부터 선택되는 적어도 1개의 기이며, a는 1∼3의 정수이다. 또한 상기 웨이퍼 중, 실리콘 원소를 포함하지 않는 것은 식[1]의 R1 중에 포함되는 탄소수의 합계가 6이상이다.)
- 제1항에 있어서,
표면에 요철 패턴이 형성된 웨이퍼에 있어서 상기 요철 패턴의 적어도 오목부 표면의 일부가 실리콘 원소를 포함하는 웨이퍼의 세정방법으로서,
전처리용 약액을 공급함으로써 요철 패턴의 표면을 개질하는 전처리공정,
개질된 요철 패턴의 표면에 방수성 보호막 형성용 약액을 공급함으로써 요철 패턴의 표면에 방수성 보호막을 형성하는 방수성 보호막 형성공정
을 적어도 포함하는 웨이퍼의 세정방법으로,
상기 전처리공정에서는, 산(酸)을 몰농도로 0.001∼5mol/L 포함하고 pH가 3이하인 전처리용 약액을 사용하여, 40도 이상이고 전처리용 약액의 비등점(沸騰點) 미만의 온도에서 요철 패턴의 표면을 개질하는
것을 특징으로 하는 웨이퍼의 세정방법.
- 제2항에 있어서,
상기 전처리용 약액 중에 포함되는 산이 유기산(有機酸)인 것을 특징으로 하는 웨이퍼의 세정방법.
- 제1항 내지 제3항 중의 어느 하나의 항에 있어서,
상기 요철 패턴의 적어도 일부가, 질화규소(窒化硅素) 및/또는 실리콘으로 형성되는 것을 특징으로 하는 웨이퍼의 세정방법.
- 제1항에 있어서,
표면에 요철 패턴이 형성된 웨이퍼에 있어서 상기 요철 패턴의 적어도 오목부 표면의 일부가 티탄, 질화티탄, 텅스텐, 알루미늄, 구리, 주석, 질화탄탈 및 루테늄으로 이루어지는 군으로부터 선택되는 적어도 1종의 물질을 포함하는 웨이퍼의 세정방법으로서,
상기 방수성 보호막 형성제가 하기 일반식[2]로 표현되는 규소화합물인 것을 특징으로 하는 웨이퍼의 세정방법.
(식[2] 중, R1은, 각각 서로 독립하여, 수소 또는 탄소수가 1∼18의 무치환 혹은 수소원소가 할로겐원소로 치환된 탄화수소기이며, 식[2]의 R1 중에 포함되는 탄소수의 합계가 6이상이며, X는 규소원소와 결합하는 원소가 질소인 1가의 관능기, 규소원소와 결합하는 원소가 산소인 1가의 관능기 또는 할로겐기이다.)
- 제1항, 제5항, 제6항 중의 어느 하나의 항에 있어서,
상기 전처리공정이 상기 웨이퍼 표면에 산화처리액(酸化處理液)을 유지하는 것인 것을 특징으로 하는 웨이퍼의 세정방법.
- 제7항에 있어서,
상기 전처리공정이 상기 웨이퍼 표면에 산화처리액(酸化處理液)을 유지하는 것인 것을 특징으로 하는 웨이퍼의 세정방법
- 제8항에 있어서,
상기 전처리공정에 있어서 사용하는 산화처리액이, 오존을 포함하는 처리액, 과산화수소를 포함하는 처리액 및 산을 포함하는 처리액으로 이루어지는 군으로부터 선택되는 적어도 하나의 처리액인 것을 특징으로 하는 웨이퍼의 세정방법.
- 제9항에 있어서,
상기 전처리공정에 있어서 사용하는 산화처리액이, 오존을 포함하는 처리액, 과산화수소를 포함하는 처리액 및 산을 포함하는 처리액으로 이루어지는 군으로부터 선택되는 적어도 하나의 처리액인 것을 특징으로 하는 웨이퍼의 세정방법.
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JP2011040113A JP5678720B2 (ja) | 2011-02-25 | 2011-02-25 | ウェハの洗浄方法 |
JPJP-P-2011-040113 | 2011-02-25 | ||
JP2011112478A JP5830931B2 (ja) | 2010-06-30 | 2011-05-19 | ウェハの洗浄方法 |
JPJP-P-2011-112478 | 2011-05-19 | ||
PCT/JP2011/064201 WO2012002200A1 (ja) | 2010-06-30 | 2011-06-22 | ウェハの洗浄方法 |
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TWI610355B (zh) * | 2013-05-15 | 2018-01-01 | Canon Kk | 微空室之內壁面處理方法及元件之製造方法 |
US10020222B2 (en) | 2013-05-15 | 2018-07-10 | Canon, Inc. | Method for processing an inner wall surface of a micro vacancy |
TWI567810B (zh) * | 2013-05-15 | 2017-01-21 | Canon Kk | The method of making the inner wall surface of the micro chamber and the manufacturing method of the component |
US9868902B2 (en) | 2014-07-17 | 2018-01-16 | Soulbrain Co., Ltd. | Composition for etching |
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