KR20180095946A - Pecvd 텅스텐 함유 하드마스크 막들 및 그 제조 방법들 - Google Patents
Pecvd 텅스텐 함유 하드마스크 막들 및 그 제조 방법들 Download PDFInfo
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- KR20180095946A KR20180095946A KR1020187023514A KR20187023514A KR20180095946A KR 20180095946 A KR20180095946 A KR 20180095946A KR 1020187023514 A KR1020187023514 A KR 1020187023514A KR 20187023514 A KR20187023514 A KR 20187023514A KR 20180095946 A KR20180095946 A KR 20180095946A
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- Prior art keywords
- tungsten
- layer
- seed layer
- range
- thickness
- Prior art date
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- 229910052721 tungsten Inorganic materials 0.000 title claims abstract description 111
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 107
- 239000010937 tungsten Substances 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 98
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 title claims description 29
- 229910052796 boron Inorganic materials 0.000 claims abstract description 71
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 69
- 230000000977 initiatory effect Effects 0.000 claims abstract description 51
- 239000000758 substrate Substances 0.000 claims description 60
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims description 14
- 230000009257 reactivity Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 description 30
- 238000012545 processing Methods 0.000 description 24
- 238000000151 deposition Methods 0.000 description 17
- 239000002243 precursor Substances 0.000 description 13
- 230000008021 deposition Effects 0.000 description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- 238000000231 atomic layer deposition Methods 0.000 description 8
- 230000015572 biosynthetic process Effects 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 229910052814 silicon oxide Inorganic materials 0.000 description 8
- 238000012546 transfer Methods 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 238000010926 purge Methods 0.000 description 7
- 238000005530 etching Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 239000000376 reactant Substances 0.000 description 6
- 239000003153 chemical reaction reagent Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005240 physical vapour deposition Methods 0.000 description 5
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
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- 238000000926 separation method Methods 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000002230 thermal chemical vapour deposition Methods 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 229910003481 amorphous carbon Inorganic materials 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- WYEMLYFITZORAB-UHFFFAOYSA-N boscalid Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1NC(=O)C1=CC=CN=C1Cl WYEMLYFITZORAB-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 238000001816 cooling Methods 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- ZOCHARZZJNPSEU-UHFFFAOYSA-N diboron Chemical compound B#B ZOCHARZZJNPSEU-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects 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
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000033444 hydroxylation Effects 0.000 description 1
- 238000005805 hydroxylation reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical class [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- NXHILIPIEUBEPD-UHFFFAOYSA-H tungsten hexafluoride Chemical compound F[W](F)(F)(F)(F)F NXHILIPIEUBEPD-UHFFFAOYSA-H 0.000 description 1
- 235000012431 wafers Nutrition 0.000 description 1
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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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- C23C16/50—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 method of coating using electric discharges
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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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- 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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- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
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- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
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- H01L21/76841—Barrier, adhesion or liner layers
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Abstract
Description
[0011] 도 1은 본 개시내용의 하나 이상의 실시예에 따른 프로세스 방식을 도시한다.
[0012] 도 2는, 도 1의 프로세스 방식에 따른 막 스택의 개략도를 도시한다.
Claims (15)
- 텅스텐 함유 막을 형성하는 방법으로서,
산화물 표면을 갖는 기판을 제공하는 단계;
상기 산화물 표면 상에 붕소 시드(seed) 층을 형성하는 단계;
상기 붕소 시드 층 상에 텅스텐 개시(initiation) 층을 형성하는 단계; 및
상기 텅스텐 개시 층 상에 텅스텐 함유 막을 형성하는 단계를 포함하는, 텅스텐 함유 막을 형성하는 방법. - 제1항에 있어서,
상기 붕소 시드 층은, 약 10 Å 내지 약 100 Å의 범위 내의 두께를 갖는, 텅스텐 함유 막을 형성하는 방법. - 제1항에 있어서,
상기 붕소 시드 층을 형성하는 단계는, B2H6 및 H2를 포함하는 반응성 가스에 상기 산화물 표면을 노출시키는 단계를 포함하는, 텅스텐 함유 막을 형성하는 방법. - 제3항에 있어서,
상기 붕소 시드 층은 PECVD 프로세스에 의해 증착되고,
상기 반응성 가스는 Ar을 더 포함하고,
상기 PECVD 프로세스는, 약 2 내지 약 10 Torr의 범위 내의 압력에서 약 1000 와트보다 작은 전력을 이용한 RF 플라즈마를 포함하는, 텅스텐 함유 막을 형성하는 방법. - 제1항에 있어서,
상기 텅스텐 개시 층을 형성하는 단계는, 약 2 내지 약 10 Torr의 범위 내의 압력에서 약 1000 와트보다 작은 전력을 이용한 RF 플라즈마를 포함하는 PECVD 프로세스에서, WF6, H2, 및 Ar을 포함하는 반응성 가스에 상기 붕소 시드 층을 노출시키는 단계를 포함하는, 텅스텐 함유 막을 형성하는 방법. - 제5항에 있어서,
상기 반응성 가스 내의 H2 및 WF6은 약 20:1의 비로 존재하는, 텅스텐 함유 막을 형성하는 방법. - 제5항에 있어서,
상기 텅스텐 개시 층은, 약 10 Å 내지 약 100 Å의 범위 내의 두께를 갖는, 텅스텐 함유 막을 형성하는 방법. - 제5항에 있어서,
상기 텅스텐 개시 층은 실질적으로 순수한 텅스텐을 포함하는, 텅스텐 함유 막을 형성하는 방법. - 제1항에 있어서,
상기 붕소 시드 층 및 상기 텅스텐 개시 층은 약 300 Å보다 작은 결합된 두께를 갖는, 텅스텐 함유 막을 형성하는 방법. - 제1항에 있어서,
상기 텅스텐 함유 막은 텅스텐 탄화물을 포함하고,
텅스텐 탄화물 막을 형성하는 것은, 약 2 내지 약 10 Torr의 범위 내의 압력에서 약 1000 와트보다 작은 전력을 이용한 RF 플라즈마를 포함하는 PECVD 프로세스에서, WF6, H2, 및 C3H6을 포함하는 반응성 가스에 상기 텅스텐 개시 층을 노출시키는 것을 포함하는, 텅스텐 함유 막을 형성하는 방법. - 제10항에 있어서,
상기 반응성 가스 내의 C3H6은, 약 2 초 내지 약 10 초의 범위 내의 시간에 걸쳐, 미리결정된 최종 유량(flow rate)으로 램핑 업(ramp up)되는, 텅스텐 함유 막을 형성하는 방법. - 제10항에 있어서,
상기 텅스텐 탄화물 막은 약 8000 Å보다 큰 두께를 갖는, 텅스텐 함유 막을 형성하는 방법. - 스택(stack)으로서,
산화물 표면을 갖는 기판;
상기 산화물 표면 상의 붕소 시드 층 ― 상기 붕소 시드 층은, 약 10 Å 내지 약 200 Å의 범위 내의 두께를 가짐 ―;
상기 붕소 시드 층 상의 선택적 텅스텐 개시 층 ― 상기 텅스텐 개시 층은, 약 10 Å 내지 약 200 Å의 범위 내의 두께를 가짐 ―; 및
상기 붕소 시드 층 또는 상기 선택적 텅스텐 개시 층 상의 텅스텐 함유 막을 포함하며,
상기 텅스텐 함유 막은 약 2000 Å보다 큰 두께를 갖는, 스택. - 제13항에 있어서,
상기 붕소 시드 층 및 상기 텅스텐 개시 층은 약 150 Å보다 작은 결합된 두께를 갖는, 스택. - 제13항에 있어서,
상기 붕소 시드 층은 약 50 Å의 두께를 갖고, 상기 텅스텐 개시 층은 약 50 Å의 두께를 갖고, 그리고 상기 텅스텐 함유 막은 약 8000 Å보다 큰 두께를 갖는, 스택.
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| PCT/US2017/013467 WO2017123967A1 (en) | 2016-01-16 | 2017-01-13 | Pecvd tungsten containing hardmask films and methods of making |
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