KR101098206B1 - 박막 트랜지스터, 박막 트랜지스터의 제조 방법 - Google Patents
박막 트랜지스터, 박막 트랜지스터의 제조 방법 Download PDFInfo
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- KR101098206B1 KR101098206B1 KR1020107019937A KR20107019937A KR101098206B1 KR 101098206 B1 KR101098206 B1 KR 101098206B1 KR 1020107019937 A KR1020107019937 A KR 1020107019937A KR 20107019937 A KR20107019937 A KR 20107019937A KR 101098206 B1 KR101098206 B1 KR 101098206B1
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- 239000010409 thin film Substances 0.000 title claims description 23
- 238000004519 manufacturing process Methods 0.000 title claims description 22
- 238000000034 method Methods 0.000 title claims description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 93
- 239000002184 metal Substances 0.000 claims abstract description 93
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000010949 copper Substances 0.000 claims abstract description 42
- 229910052802 copper Inorganic materials 0.000 claims abstract description 41
- 239000000654 additive Substances 0.000 claims abstract description 20
- 230000000996 additive effect Effects 0.000 claims abstract description 20
- 229910000881 Cu alloy Inorganic materials 0.000 claims abstract description 17
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 10
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000001301 oxygen Substances 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 7
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 6
- 239000010408 film Substances 0.000 claims description 92
- 239000007789 gas Substances 0.000 claims description 82
- 238000004544 sputter deposition Methods 0.000 claims description 21
- 230000001590 oxidative effect Effects 0.000 claims description 19
- 239000004065 semiconductor Substances 0.000 claims description 10
- 238000000059 patterning Methods 0.000 claims description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract description 48
- 229910052710 silicon Inorganic materials 0.000 abstract description 47
- 239000010703 silicon Substances 0.000 abstract description 47
- 238000005530 etching Methods 0.000 abstract description 28
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 15
- 239000001257 hydrogen Substances 0.000 abstract description 14
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 14
- 239000007788 liquid Substances 0.000 abstract description 7
- 239000002244 precipitate Substances 0.000 abstract description 4
- 239000010410 layer Substances 0.000 description 119
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 18
- 239000000758 substrate Substances 0.000 description 14
- 239000010936 titanium Substances 0.000 description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 8
- 239000011651 chromium Substances 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
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- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 6
- 229910052581 Si3N4 Inorganic materials 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 229910017604 nitric acid Inorganic materials 0.000 description 6
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 6
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 4
- 229910021417 amorphous silicon Inorganic materials 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
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- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 229910001882 dioxygen Inorganic materials 0.000 description 4
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- 229910003902 SiCl 4 Inorganic materials 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000009832 plasma treatment Methods 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
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- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000002161 passivation Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- YPSXFMHXRZAGTG-UHFFFAOYSA-N 4-methoxy-2-[2-(5-methoxy-2-nitrosophenyl)ethyl]-1-nitrosobenzene Chemical compound COC1=CC=C(N=O)C(CCC=2C(=CC=C(OC)C=2)N=O)=C1 YPSXFMHXRZAGTG-UHFFFAOYSA-N 0.000 description 1
- 102100021569 Apoptosis regulator Bcl-2 Human genes 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000005749 Copper compound Substances 0.000 description 1
- UOACKFBJUYNSLK-XRKIENNPSA-N Estradiol Cypionate Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H](C4=CC=C(O)C=C4CC3)CC[C@@]21C)C(=O)CCC1CCCC1 UOACKFBJUYNSLK-XRKIENNPSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 101000971171 Homo sapiens Apoptosis regulator Bcl-2 Proteins 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- -1 as shown in FIG. 1G Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- 150000001880 copper compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 125000000896 monocarboxylic acid group Chemical group 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
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- H01L23/522—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body
- H01L23/532—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body characterised by the materials
- H01L23/53204—Conductive materials
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- H01L23/53238—Additional layers associated with copper layers, e.g. adhesion, barrier, cladding layers
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- C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
- C23C14/0021—Reactive sputtering or evaporation
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Abstract
Description
도 1b 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 1c 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 1d 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 1e 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 1g 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 1h 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 1i 는 본 발명의 트랜지스터 제조 방법을 설명하기 위한 도면이다.
도 2 는 금속 배선막을 설명하기 위한 도면이다.
도 3 은 본 발명의 트랜지스터를 제조하는 성막 장치를 설명하기 위한 도면이다.
도 4 는 O2 가스를 사용한 밀착층과 CO2 가스를 사용한 밀착층의 비저항을 비교하기 위한 그래프이다.
10 처리 대상물
12 게이트 전극
14 게이트 절연층
16 실리콘층
18 n 형 실리콘층
20a, 20b 금속 배선막
27 소스 전극막
28 드레인 전극막
31 소스 영역
32 드레인 영역
51 밀착층
52 금속 저저항층
111 구리 합금 타겟
112 순구리 타겟
Claims (9)
- 처리 대상물 상에 게이트 전극을 형성하는 공정과,
상기 게이트 전극 상에 게이트 절연층을 형성하는 공정과,
상기 게이트 절연층 상에 반도체층을 형성하는 공정과,
상기 반도체층 상에 오믹 콘택층을 형성하는 공정과,
상기 오믹 콘택층 상에 금속 배선막을 형성하는 공정과,
상기 오믹 콘택층과 상기 금속 배선막을 패터닝하여 제 1, 제 2 오믹 콘택층과 소스 전극과 드레인 전극을 형성하는 공정을 갖는 역스태거형 박막 트랜지스터의 제조 방법으로서,
상기 금속 배선막을 형성하는 공정은, 진공 분위기 중에서, Ti, Zr 또는 Cr 중 적어도 1 종류를 함유하는 첨가 금속과 구리를 함유하는 구리 합금 타겟을, 스퍼터링 가스와 산화성 가스를 함유하는 가스를 도입하여 스퍼터링하고, 상기 오믹 콘택층 상에 구리와 상기 첨가 금속과 산소를 함유하는 밀착층을 형성하는 공정을 포함하는, 역스태거형 박막 트랜지스터의 제조 방법. - 제 1 항에 있어서,
상기 첨가 금속을, 상기 구리 합금 타겟에 5 원자% 이상 30 원자% 이하의 비율로 함유시키는, 역스태거형 박막 트랜지스터의 제조 방법. - 제 1 항에 있어서,
상기 금속 배선막을 형성하는 공정은, 상기 밀착층을 형성한 후, 상기 밀착층보다 구리의 함유율이 높고, 상기 밀착층보다 저저항인 금속 저저항층을 상기 밀착층 상에 형성하는 공정을 포함하는, 역스태거형 박막 트랜지스터의 제조 방법. - 제 1 항에 있어서,
상기 산화성 가스로는 CO2 가스를 사용하고, 상기 CO2 가스는 상기 스퍼터링 가스 100 체적부에 대해, 3 체적부 이상 30 체적부 이하의 범위로 함유시키는, 역스태거형 박막 트랜지스터의 제조 방법. - 제 1 항에 있어서,
상기 산화성 가스로는 O2 가스를 사용하고, 상기 O2 가스는 상기 스퍼터링 가스 100 체적부에 대해, 3 체적부 이상 15 체적부 이하의 범위로 함유시키는, 역스태거형 박막 트랜지스터의 제조 방법. - 처리 대상물 상에 형성된 게이트 전극과,
상기 게이트 전극 상에 형성된 게이트 절연층과,
상기 게이트 절연층 상에 형성된 반도체층과,
상기 반도체층 상에 형성되고 분리되어 있는 제 1, 제 2 오믹 콘택층과,
상기 제 1, 제 2 오믹 콘택층 상에 각각 형성된 소스 전극과 드레인 전극을 갖는 역스태거형 박막 트랜지스터로서,
상기 소스 전극과 상기 드레인 전극은, 상기 제 1, 제 2 오믹 콘택층과의 접촉면에, Ti, Zr 또는 Cr 중 적어도 1 종으로 이루어진 첨가 금속과 산소를 함유하는 구리 합금을 포함하는 밀착층을 갖는, 역스태거형 박막 트랜지스터. - 제 6 항에 있어서,
상기 제 1, 제 2 오믹 콘택층은 n 형 반도체층인, 역스태거형 박막 트랜지스터. - 제 6 항에 있어서,
상기 밀착층보다 구리의 함유율이 높고, 상기 밀착층보다 저저항인 금속 저저항층이 상기 밀착층 상에 배치된, 역스태거형 박막 트랜지스터. - 제 6 항에 있어서,
상기 첨가 금속은, 상기 밀착층의 첨가 금속을 함유하는 금속 원자에 대해 5 원자% 이상 30 원자% 이하의 비율로 함유된, 역스태거형 박막 트랜지스터.
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JP5659966B2 (ja) * | 2010-06-29 | 2015-01-28 | 日亜化学工業株式会社 | 半導体素子及びその製造方法 |
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