KR20160041778A - 피처리체를 처리하는 방법 - Google Patents
피처리체를 처리하는 방법 Download PDFInfo
- Publication number
- KR20160041778A KR20160041778A KR1020150137873A KR20150137873A KR20160041778A KR 20160041778 A KR20160041778 A KR 20160041778A KR 1020150137873 A KR1020150137873 A KR 1020150137873A KR 20150137873 A KR20150137873 A KR 20150137873A KR 20160041778 A KR20160041778 A KR 20160041778A
- Authority
- KR
- South Korea
- Prior art keywords
- mask
- gas
- plasma
- silicon oxide
- oxide film
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 164
- 238000012545 processing Methods 0.000 title claims description 166
- 239000007789 gas Substances 0.000 claims abstract description 186
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 97
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 96
- 230000008569 process Effects 0.000 claims abstract description 32
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910001882 dioxygen Inorganic materials 0.000 claims abstract description 17
- 239000002243 precursor Substances 0.000 claims description 24
- 229910052710 silicon Inorganic materials 0.000 claims description 20
- 238000005530 etching Methods 0.000 claims description 19
- 239000010703 silicon Substances 0.000 claims description 19
- 238000010926 purge Methods 0.000 claims description 16
- 150000003376 silicon Chemical class 0.000 claims description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 14
- 150000002500 ions Chemical class 0.000 claims description 13
- -1 silicon halide Chemical class 0.000 claims description 9
- 229910003902 SiCl 4 Inorganic materials 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000003667 anti-reflective effect Effects 0.000 claims 1
- 230000001678 irradiating effect Effects 0.000 claims 1
- 238000000059 patterning Methods 0.000 abstract description 18
- 239000010408 film Substances 0.000 description 172
- 235000012431 wafers Nutrition 0.000 description 46
- 229910052760 oxygen Inorganic materials 0.000 description 17
- 239000001301 oxygen Substances 0.000 description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 16
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 12
- 239000003507 refrigerant Substances 0.000 description 11
- 229910052736 halogen Inorganic materials 0.000 description 9
- 150000002367 halogens Chemical class 0.000 description 9
- 239000000460 chlorine Substances 0.000 description 7
- 238000000151 deposition Methods 0.000 description 7
- 230000008021 deposition Effects 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 5
- 239000010409 thin film Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 229910003691 SiBr Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 229910001873 dinitrogen Inorganic materials 0.000 description 4
- 238000010494 dissociation reaction Methods 0.000 description 4
- 230000005593 dissociations Effects 0.000 description 4
- 229910052731 fluorine Inorganic materials 0.000 description 4
- 239000011737 fluorine Substances 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- 239000000758 substrate Substances 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- 238000003892 spreading Methods 0.000 description 3
- 230000007480 spreading Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000006200 vaporizer Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000026030 halogenation Effects 0.000 description 1
- 238000005658 halogenation reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Images
Classifications
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/033—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers
- H01L21/0334—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising inorganic layers characterised by their size, orientation, disposition, behaviour, shape, in horizontal or vertical plane
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
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- C23C16/402—Silicon dioxide
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
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- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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Abstract
Description
도 2는 플라즈마 처리 장치의 일례를 나타내는 도이다.
도 3a 및 도 3b는 도 1에 나타내는 방법의 각 공정의 실행 후의 피처리체의 상태를 나타내는 단면도이다.
도 4a 및 도 4b는 도 1에 나타내는 방법의 각 공정의 실행 후의 피처리체의 상태를 나타내는 단면도이다.
도 5a ~ 도 5c는 도 1에 나타내는 방법의 각 공정의 실행 후의 피처리체의 상태를 나타내는 단면도이다.
도 6a 및 도 6b는 실리콘 산화막의 형성의 원리를 설명하기 위한 도이다.
도 7은 다른 실시형태에 따른 피처리체를 처리하는 방법을 나타내는 순서도이다.
도 8a ~ 도 8c는 도 7에 나타내는 방법의 각 공정의 실행 후의 피처리체의 상태를 나타내는 단면도이다.
도 9a ~ 도 9c는 도 7에 나타내는 방법의 각 공정의 실행 후의 피처리체의 상태를 나타내는 단면도이다.
도 10은 실험 결과를 나타내는 그래프이다.
도 11은 실험에 이용한 마스크(MK1)의 패턴을 나타내는 평면도이다.
도 12는 실험 결과를 나타내는 그래프이다.
12 : 처리 용기
PD : 배치대
ESC : 정전 척
LE : 하부 전극
30 : 상부 전극
34 : 전극판
40 : 가스 소스군
50 : 배기 장치
62 : 제 1 고주파 전원
64 : 제 2 고주파 전원
70 : 전원
Cnt : 제어부
W : 웨이퍼
SB : 기판
EL : 피에칭층
OL : 유기막
AL : 반사 방지막
MK1, MK2, MK3, MK4 : 마스크
SX1, SX2 : 실리콘 산화막
Claims (12)
- 피처리체를 처리하는 방법으로서,
상기 피처리체는, 피에칭층, 상기 피에칭층 상에 마련된 유기막, 상기 유기막 상에 마련된 실리콘 함유 반사 방지막, 및 레지스트 재료로 구성된 제 1 마스크이며 상기 반사 방지막 상에 마련된 상기 제 1 마스크를 가지고,
상기 방법은,
상기 피처리체를 수용한 플라즈마 처리 장치의 처리 용기 내에서, 상기 제 1 마스크 및 상기 반사 방지막 상에 실리콘 산화막을 형성하는 공정이며, 상기 실리콘 산화막은, 상기 제 1 마스크의 상면 상에 형성된 제 1 영역, 상기 반사 방지막 상에 형성된 제 2 영역, 및 상기 제 1 마스크의 측면 상에 형성된 제 3 영역을 가지는, 상기 공정과,
상기 처리 용기 내에서 발생시킨 플라즈마에 의해, 상기 제 1 영역 및 상기 제 2 영역을 제거하는 공정이며, 상기 제 3 영역에 기초하는 제 2 마스크를 형성하는, 상기 공정과,
상기 처리 용기 내에서 발생시킨 플라즈마에 의해, 상기 제 1 마스크를 제거하는 공정과,
상기 처리 용기 내에서 발생시킨 플라즈마에 의해, 상기 반사 방지막을 에칭하는 공정과,
상기 처리 용기 내에서 발생시킨 플라즈마에 의해, 상기 유기막을 에칭하는 공정이며, 상기 유기막으로 구성된 제 3 마스크를 형성하는, 상기 공정
을 포함하고,
상기 실리콘 산화막을 형성하는 상기 공정은,
상기 피처리체를 수용한 상기 처리 용기 내에서, 할로겐화 규소 가스를 포함하는 제 1 가스의 플라즈마를 생성하여 반응 전구체를 형성하는 제 1 공정과,
상기 처리 용기 내의 공간을 퍼지하는 제 2 공정과,
상기 처리 용기 내에서 산소 가스를 포함하는 제 2 가스의 플라즈마를 생성하여 실리콘 산화막을 형성하는 제 3 공정과,
상기 처리 용기 내의 공간을 퍼지하는 제 4 공정
을 포함하는 시퀀스의 실행에 의해 실리콘 산화막을 성막하는 것을 특징으로 하는 방법. - 제 1 항에 있어서,
상기 실리콘 산화막을 형성하는 상기 공정에 있어서, 상기 제 1 공정, 상기 제 2 공정, 상기 제 3 공정, 및 상기 제 4 공정을 포함하는 상기 시퀀스가 반복되는 것을 특징으로 하는 방법. - 제 1 항 또는 제 2 항에 있어서,
상기 제 1 공정에서는, 상기 처리 용기 내의 압력이 13.33 Pa 이상의 압력이고, 플라즈마 생성용의 고주파 전원의 전력이 100 W 이하인 고압 저전력의 조건으로 설정되는 것을 특징으로 하는 방법. - 제 1 항 또는 제 2 항에 있어서,
상기 제 1 공정에서는, 이온 인입용의 바이어스 전력이 상기 피처리체를 지지하는 배치대에 인가되지 않는 것을 특징으로 하는 방법. - 제 1 항 또는 제 2 항에 있어서,
상기 플라즈마 처리 장치는 용량 결합형의 플라즈마 처리 장치이며,
상기 실리콘 산화막을 형성하는 상기 공정의 실행 전에, 상기 처리 용기 내에서 플라즈마를 발생시키고 상기 플라즈마 처리 장치의 상부 전극에 음의 직류 전압을 인가함으로써, 상기 제 1 마스크에 이차 전자를 조사하는 공정을 더 포함하는 것을 특징으로 하는 방법. - 제 1 항 또는 제 2 항에 있어서,
상기 처리 용기 내에서 상기 제 3 마스크 및 상기 피에칭층 상에 다른 실리콘 산화막을 형성하는 공정이며, 상기 다른 실리콘 산화막은, 상기 제 3 마스크의 상면 상에 형성된 제 4 영역, 상기 피에칭층 상에 형성된 제 5 영역, 및 상기 제 3 마스크의 측면 상에 형성된 제 6 영역을 가지는, 상기 공정과,
상기 처리 용기 내에서 발생시킨 플라즈마에 의해, 상기 제 4 영역 및 상기 제 5 영역을 제거하는 공정이며, 상기 제 6 영역으로 구성된 제 4 마스크를 형성하는 공정과,
상기 처리 용기 내에서 발생시킨 플라즈마에 의해, 상기 제 3 마스크를 제거하는 공정
을 포함하고,
상기 다른 실리콘 산화막을 형성하는 상기 공정은,
상기 피처리체를 수용한 상기 처리 용기 내에서, 할로겐화 규소 가스를 포함하는 제 3 가스의 플라즈마를 생성하여 반응 전구체를 형성하는 제 5 공정과,
상기 처리 용기 내의 공간을 퍼지하는 제 6 공정과,
상기 처리 용기 내에서 산소 가스를 포함하는 제 4 가스의 플라즈마를 생성하여 실리콘 산화막을 형성하는 제 7 공정과,
상기 처리 용기 내의 공간을 퍼지하는 제 8 공정
을 포함하는 시퀀스의 실행에 의해 실리콘 산화막을 성막하는 것을 특징으로 하는 방법. - 제 6 항에 있어서,
상기 다른 실리콘 산화막을 형성하는 상기 공정에 있어서, 상기 제 5 공정, 상기 제 6 공정, 상기 제 7 공정, 및 상기 제 8 공정을 포함하는 상기 시퀀스가 반복되는 것을 특징으로 하는 방법. - 제 6 항에 있어서,
상기 제 5 공정에서는, 상기 처리 용기 내의 압력이 13.33 Pa 이상의 압력이고, 플라즈마 생성용의 고주파 전원의 전력이 100 W 이하인 고압 저전력의 조건으로 설정되는 것을 특징으로 하는 방법. - 제 6 항에 있어서,
상기 제 5 공정에서는, 이온 인입용의 바이어스 전력이 상기 피처리체를 지지하는 배치대에 인가되지 않는 것을 특징으로 하는 방법. - 제 6 항에 있어서,
상기 플라즈마 처리 장치는 용량 결합형의 플라즈마 처리 장치이며,
상기 다른 실리콘 산화막을 형성하는 상기 공정의 실행 전에, 상기 처리 용기 내에서 플라즈마를 발생시켜 상기 플라즈마 처리 장치의 상부 전극에 음의 직류 전압을 인가함으로써, 상기 제 3 마스크에 이차 전자를 조사하는 공정을 더 포함하는 것을 특징으로 하는 방법. - 제 1 항 또는 제 2 항에 있어서,
상기 처리 용기 내에서 발생시킨 플라즈마에 의해, 상기 피에칭층을 에칭하는 공정을 더 포함하는 것을 특징으로 하는 방법. - 제 1 항 또는 제 2 항에 있어서,
상기 할로겐화 규소 가스는 SiCl4 가스인 것을 특징으로 하는 방법.
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KR102309941B1 (ko) | 2021-10-07 |
US20160099148A1 (en) | 2016-04-07 |
CN105489485A (zh) | 2016-04-13 |
EP3007208A1 (en) | 2016-04-13 |
TW201633017A (zh) | 2016-09-16 |
EP3007208B1 (en) | 2018-04-18 |
JP6366454B2 (ja) | 2018-08-01 |
CN105489485B (zh) | 2019-09-17 |
JP2016076620A (ja) | 2016-05-12 |
US9911607B2 (en) | 2018-03-06 |
TWI668530B (zh) | 2019-08-11 |
US20180158684A1 (en) | 2018-06-07 |
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