KR102525779B1 - 황 도핑된 탄소 하드마스크들 - Google Patents
황 도핑된 탄소 하드마스크들 Download PDFInfo
- Publication number
- KR102525779B1 KR102525779B1 KR1020220031478A KR20220031478A KR102525779B1 KR 102525779 B1 KR102525779 B1 KR 102525779B1 KR 1020220031478 A KR1020220031478 A KR 1020220031478A KR 20220031478 A KR20220031478 A KR 20220031478A KR 102525779 B1 KR102525779 B1 KR 102525779B1
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- sulfur
- ahm
- doped
- source
- carbon
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- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 52
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 50
- 229910052717 sulfur Inorganic materials 0.000 title claims abstract description 49
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 239000011593 sulfur Substances 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 93
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- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 claims abstract description 19
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- 238000000151 deposition Methods 0.000 claims description 38
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
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- JJWKPURADFRFRB-UHFFFAOYSA-N carbonyl sulfide Chemical compound O=C=S JJWKPURADFRFRB-UHFFFAOYSA-N 0.000 description 4
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- -1 H 2 S Chemical class 0.000 description 2
- LSDPWZHWYPCBBB-UHFFFAOYSA-N Methanethiol Chemical compound SC LSDPWZHWYPCBBB-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
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- 229910018503 SF6 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001273 butane Substances 0.000 description 1
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- 229940093495 ethanethiol Drugs 0.000 description 1
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- 230000006870 function Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 238000009616 inductively coupled plasma Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
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- IJDNQMDRQITEOD-UHFFFAOYSA-N n-butane Chemical compound CCCC IJDNQMDRQITEOD-UHFFFAOYSA-N 0.000 description 1
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- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
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- H01L21/02274—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition in the presence of a plasma [PECVD]
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- 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
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Abstract
Description
도 2는 다양한 실시예들에 따라 황-도핑된 AHM들을 형성하는 방법들의 관련 동작들을 도시하는 프로세스 흐름도이다.
도 3은 다양한 실시예들을 실시하기에 적합한 PECVD 챔버의 예의 개략적인 예시를 도시한다.
막 | 응력 (MPa) | 탄성계수 (GPa) |
상대적인 에칭 레이트 | |
ONON | OPOP | |||
도핑되지 않은 AHM | 2 | 25 | 1.00 | 1.00 |
2% S-도핑된 AHM #1 | -51 | 34 | 0.94 | 0.96 |
2% S-도핑된 AHM #2 | -118 | 72 | 0.81 | 0.74 |
5% S-도핑된 AHM #1 | -96 | 46 | 0.80 | 0.94 |
5% S-도핑된 AHM #2 | -372 | 68 | 0.58 | 0.81 |
5% S-도핑된 AHM #3 | -160 | 70 | 0.56 | 0.76 |
5% S-도핑된 AHM #4 | -140 | 72 | 0.80 | 0.76 |
Claims (16)
- 반도체 기판 상에서 에칭될 제1층 상에 애싱가능한 하드마스크 (AHM; ashable hard mask) 를 형성하는 방법에 있어서,
상기 반도체 기판을 하우징하는 증착 챔버 (deposition chamber) 에 탄소 소스 및 황 소스를 포함하는 프리커서 가스를 제공하는 단계; 및
상기 프리커서 가스로부터 플라즈마를 생성하여 PECVD (plasma enhanced chemical vapor deposition) 프로세스에 의해 상기 제1층 상에 황-도핑된 AHM을 증착하는 단계를 포함하고,
상기 증착된 황-도핑된 AHM은 0.5% 내지 5%의 황 원자 함유량을 갖는, AHM을 형성하는 방법. - 제1항에 있어서,
상기 증착된 황-도핑된 AHM은 60% 내지 90%의 탄소 원자 함유량을 갖는, AHM을 형성하는 방법. - 제1항에 있어서,
상기 증착된 황-도핑된 AHM은 13% 내지 26%의 수소 원자 함유량을 갖는, AHM을 형성하는 방법. - 제1항에 있어서,
상기 황-도핑된 AHM은 1000Å 내지 90,000Å의 두께를 갖는, AHM을 형성하는 방법. - 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 황-도핑된 AHM은 -40MPa 내지 -400MPa의 응력을 갖는, AHM을 형성하는 방법. - 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 제1층은 산화물층, 질화물층, 및 폴리실리콘층으로 구성된 그룹으로부터 선택되는, AHM을 형성하는 방법. - 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 탄소 소스는 메탄, 아세틸렌, 또는 프로필렌인, AHM을 형성하는 방법. - 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 황 소스는 황화 수소 (H2S) 또는 이황화 탄소 (CS2) 인, AHM을 형성하는 방법. - 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 황 소스는 이황화 탄소 (CS2) 이고 상기 탄소 소스는 아세틸렌 (C2H2) 인, AHM을 형성하는 방법. - 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 탄소 소스 및 상기 황 소스는 상기 증착 챔버로부터의 업스트림에서 조합되는, AHM을 형성하는 방법. - 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 탄소 소스 및 상기 황 소스는 상기 증착 챔버에 개별적으로 제공되는, AHM을 형성하는 방법. - 제1항 내지 제4항 중 어느 한 항에 있어서,
상기 황-도핑된 AHM 층을 패터닝하는 단계를 더 포함하는, AHM을 형성하는 방법. - 제12항에 있어서,
상기 황-도핑된 AHM의 상기 패턴에 따라 상기 제1층을 에칭하는 단계를 더 포함하는, AHM을 형성하는 방법. - 반도체 기판 상에 황-도핑된 비정질 탄소-계 막을 형성하는 방법에 있어서,
증착 챔버 내에 상기 반도체 기판을 제공하는 단계;
탄소 소스 및 황 소스를 포함하는 프리커서 가스에 상기 반도체 기판을 노출시키는 단계; 및
PECVD 프로세스에 의해 상기 반도체 기판 상에 상기 황-도핑된 비정질 탄소-계 막을 증착하는 단계를 포함하고,
상기 증착된 황-도핑된 애싱가능한 하드마스크 (AHM; ashable hard mask) 는 0.5% 내지 5%의 황 원자 함유량을 갖는, 반도체 기판 상에 황-도핑된 비정질 탄소-계 막을 형성하는 방법. - 제14항에 있어서,
상기 황 소스는 황화 수소 (H2S) 또는 이황화 탄소 (CS2) 인, 반도체 기판 상에 황-도핑된 비정질 탄소-계 막을 형성하는 방법. - 반도체 기판을 프로세스하도록 구성된 장치에 있어서,
(a) 증착 챔버로서,
샤워헤드,
플라즈마 생성기,
기판 지지부, 및
하나 이상의 가스 유입구들을 포함하는, 상기 증착 챔버; 및
(b) 상기 장치 내에서 동작들을 제어하기 위한 제어기로서,
상기 반도체 기판을 하우징하는 상기 증착 챔버로 탄소 소스 및 황 소스를 포함하는 프리커서 가스의 유동을 유발하고, 그리고
상기 프리커서 가스로부터 플라즈마를 생성하여 PECVD 프로세스에 의해 상기 반도체 기판 상에 황-도핑된 AHM을 증착하도록 상기 플라즈마 생성기로 전력의 인가를 유발하기 위한 머신-판독가능한 인스트럭션들을 포함하고,
상기 증착된 황-도핑된 AHM은 0.5% 내지 5%의 황 원자 함유량을 갖는, 상기 제어기를 포함하는, 장치.
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KR1020140130456A KR102375870B1 (ko) | 2013-09-30 | 2014-09-29 | 황 도핑된 탄소 하드마스크들 |
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CN104517815A (zh) | 2015-04-15 |
TWI644361B (zh) | 2018-12-11 |
JP6689565B2 (ja) | 2020-04-28 |
JP2015070270A (ja) | 2015-04-13 |
KR20220035900A (ko) | 2022-03-22 |
KR20150037641A (ko) | 2015-04-08 |
US20150090300A1 (en) | 2015-04-02 |
US20150093915A1 (en) | 2015-04-02 |
CN104517815B (zh) | 2017-08-22 |
TW201528374A (zh) | 2015-07-16 |
KR102375870B1 (ko) | 2022-03-16 |
US9320387B2 (en) | 2016-04-26 |
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