KR20200077373A - 연마 조성물 및 이를 사용하는 방법 - Google Patents
연마 조성물 및 이를 사용하는 방법 Download PDFInfo
- Publication number
- KR20200077373A KR20200077373A KR1020190054849A KR20190054849A KR20200077373A KR 20200077373 A KR20200077373 A KR 20200077373A KR 1020190054849 A KR1020190054849 A KR 1020190054849A KR 20190054849 A KR20190054849 A KR 20190054849A KR 20200077373 A KR20200077373 A KR 20200077373A
- Authority
- KR
- South Korea
- Prior art keywords
- composition
- polishing
- removal rate
- silicon oxide
- silicon nitride
- 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
- 239000000203 mixture Substances 0.000 title claims abstract description 158
- 238000005498 polishing Methods 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims description 32
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 171
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 150
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims abstract description 150
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 100
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 69
- 150000004767 nitrides Chemical class 0.000 claims abstract description 60
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000002253 acid Substances 0.000 claims abstract description 15
- 125000001183 hydrocarbyl group Chemical group 0.000 claims abstract description 8
- 125000002947 alkylene group Chemical group 0.000 claims abstract description 7
- 239000003082 abrasive agent Substances 0.000 claims description 35
- 239000000377 silicon dioxide Substances 0.000 claims description 29
- 230000007547 defect Effects 0.000 claims description 25
- 239000000758 substrate Substances 0.000 claims description 25
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 21
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 21
- 230000007797 corrosion Effects 0.000 claims description 20
- 238000005260 corrosion Methods 0.000 claims description 20
- 125000000129 anionic group Chemical group 0.000 claims description 16
- 229910019142 PO4 Inorganic materials 0.000 claims description 14
- 239000010452 phosphate Substances 0.000 claims description 14
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 13
- 239000004065 semiconductor Substances 0.000 claims description 13
- UEZVMMHDMIWARA-UHFFFAOYSA-M phosphonate Chemical compound [O-]P(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-M 0.000 claims description 10
- 125000002091 cationic group Chemical group 0.000 claims description 9
- 230000007935 neutral effect Effects 0.000 claims description 9
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical group OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- UHGIMQLJWRAPLT-UHFFFAOYSA-N octadecyl dihydrogen phosphate Chemical compound CCCCCCCCCCCCCCCCCCOP(O)(O)=O UHGIMQLJWRAPLT-UHFFFAOYSA-N 0.000 claims description 6
- 150000007942 carboxylates Chemical group 0.000 claims description 5
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L sulfate group Chemical group S(=O)(=O)([O-])[O-] QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 5
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 150000004676 glycans Chemical class 0.000 claims description 4
- 229920001282 polysaccharide Polymers 0.000 claims description 4
- 239000005017 polysaccharide Substances 0.000 claims description 4
- HVWGGPRWKSHASF-UHFFFAOYSA-N Sulfuric acid, monooctadecyl ester Chemical compound CCCCCCCCCCCCCCCCCCOS(O)(=O)=O HVWGGPRWKSHASF-UHFFFAOYSA-N 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000002019 doping agent Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- FTMKAMVLFVRZQX-UHFFFAOYSA-N octadecylphosphonic acid Chemical compound CCCCCCCCCCCCCCCCCCP(O)(O)=O FTMKAMVLFVRZQX-UHFFFAOYSA-N 0.000 claims description 3
- 229940046947 oleth-10 phosphate Drugs 0.000 claims description 3
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 claims description 3
- KRIXEEBVZRZHOS-UHFFFAOYSA-N tetradecyl dihydrogen phosphate Chemical compound CCCCCCCCCCCCCCOP(O)(O)=O KRIXEEBVZRZHOS-UHFFFAOYSA-N 0.000 claims description 3
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 claims description 2
- MEESPVWIOBCLJW-KTKRTIGZSA-N [(z)-octadec-9-enyl] dihydrogen phosphate Chemical compound CCCCCCCC\C=C/CCCCCCCCOP(O)(O)=O MEESPVWIOBCLJW-KTKRTIGZSA-N 0.000 claims description 2
- 150000001412 amines Chemical class 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 125000005587 carbonate group Chemical group 0.000 claims description 2
- LNTZHXQMPUKVNX-UHFFFAOYSA-N docosyl dihydrogen phosphate Chemical compound CCCCCCCCCCCCCCCCCCCCCCOP(O)(O)=O LNTZHXQMPUKVNX-UHFFFAOYSA-N 0.000 claims description 2
- TVACALAUIQMRDF-UHFFFAOYSA-N dodecyl dihydrogen phosphate Chemical compound CCCCCCCCCCCCOP(O)(O)=O TVACALAUIQMRDF-UHFFFAOYSA-N 0.000 claims description 2
- 230000003628 erosive effect Effects 0.000 claims description 2
- NVVZQXQBYZPMLJ-UHFFFAOYSA-N formaldehyde;naphthalene-1-sulfonic acid Chemical compound O=C.C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 NVVZQXQBYZPMLJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000001257 hydrogen Substances 0.000 claims description 2
- 229910052739 hydrogen Inorganic materials 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims 1
- 125000001117 oleyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims 1
- 239000002585 base Substances 0.000 abstract description 10
- 235000012431 wafers Nutrition 0.000 description 77
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 41
- 239000000463 material Substances 0.000 description 29
- 239000002002 slurry Substances 0.000 description 20
- 125000004432 carbon atom Chemical group C* 0.000 description 16
- 229910052751 metal Inorganic materials 0.000 description 15
- 239000002184 metal Substances 0.000 description 15
- 230000008569 process Effects 0.000 description 15
- 229910052710 silicon Inorganic materials 0.000 description 15
- -1 halide salts Chemical class 0.000 description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 13
- 239000008119 colloidal silica Substances 0.000 description 13
- 239000010703 silicon Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 11
- 238000002955 isolation Methods 0.000 description 10
- 239000007788 liquid Substances 0.000 description 8
- 239000003002 pH adjusting agent Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- VOQMPZXAFLPTMM-UHFFFAOYSA-N 4-(4-chlorophenoxy)piperidine Chemical compound C1=CC(Cl)=CC=C1OC1CCNCC1 VOQMPZXAFLPTMM-UHFFFAOYSA-N 0.000 description 6
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical group [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 239000005380 borophosphosilicate glass Substances 0.000 description 6
- 238000000151 deposition Methods 0.000 description 6
- 239000003989 dielectric material Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 150000007524 organic acids Chemical class 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000009472 formulation Methods 0.000 description 5
- 239000004615 ingredient Substances 0.000 description 5
- 150000002739 metals Chemical class 0.000 description 5
- 239000010936 titanium Substances 0.000 description 5
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 4
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 239000012141 concentrate Substances 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
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- 238000012360 testing method Methods 0.000 description 4
- 229910052719 titanium Inorganic materials 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000032683 aging Effects 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 238000007517 polishing process Methods 0.000 description 3
- 229920006395 saturated elastomer Chemical group 0.000 description 3
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- 239000004094 surface-active agent Substances 0.000 description 3
- 238000012876 topography Methods 0.000 description 3
- PWQNOLAKMCLNJI-KTKRTIGZSA-N 2-[2-[2-[(z)-octadec-9-enoxy]ethoxy]ethoxy]ethyl dihydrogen phosphate Chemical compound CCCCCCCC\C=C/CCCCCCCCOCCOCCOCCOP(O)(O)=O PWQNOLAKMCLNJI-KTKRTIGZSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- GDOHDNVLNKFRDG-UHFFFAOYSA-N CCCCCCCCCCCCCCCCCCOP(O)=O Chemical compound CCCCCCCCCCCCCCCCCCOP(O)=O GDOHDNVLNKFRDG-UHFFFAOYSA-N 0.000 description 2
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
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- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 2
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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- H01L21/3105—After-treatment
- H01L21/31051—Planarisation of the insulating layers
- H01L21/31053—Planarisation of the insulating layers involving a dielectric removal step
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Abstract
Description
도 2는 연마 전의 STI 패턴화된 웨이퍼 필름 스택의 개략도이다.
도 3은 본 발명에 따른 실리카계 연마 조성물을 사용하여 STI CMP 후 전체적인 결함을 나타내는 웨이퍼 맵(wafer map)이다.
도 4는 상업용 세리아 연마제 함유 조성물을 사용하여 STI CMP 후 전체적인 결함을 나타내는 웨이퍼 맵이다.
샘플 | 질화물 제거율 감소제 | EO 기(group) | TEOS RR [Å/분] |
SiN RR [Å/분] |
TEOS RR/ SiN RR |
대조군 | 없음 | 0 | 982 | 121 | 8 |
1A | 스테아릴 포스페이트 | 0 | 816 | 2 | 408 |
1B | n-옥타데실포스포네이트 | 0 | 868 | 1 | 868 |
1C | 올레일 포스페이트 | 0 | 965 | 4 | 241 |
1D | 옥타데실 설페이트 | 0 | 854 | 1 | 854 |
1E | 올레쓰-3 포스페이트 | 3 | 790 | 10 | 79 |
1F | 올레쓰-10 포스페이트 | 10 | 629 | 7 | 90 |
샘플 | 연마제 | n-옥타데실포스폰산 상대 농도 |
pH | TEOS RR [Å/분] |
SiN RR [Å/분] |
TEOS RR/ SiN RR |
2A | 중성 실리카 | × | 2.25 | 925 | 3 | 308 |
2B | × | 2.75 | 1186 | 2 | 593 | |
2C | × | 3.50 | 921 | 3 | 307 | |
2D | × | 4.25 | 587 | 9 | 65 | |
2E | 양이온성 실리카 | 2× | 2.75 | 389 | 2 | 194 |
2F | 2× | 3.50 | 458 | 2 | 229 | |
2G | 2× | 4.25 | 815 | 2 | 407 | |
2H | 음이온성 실리카 | 2× | 2.25 | 47 | 27 | 2 |
2I | 2× | 3.25 | 44 | 13 | 3 |
샘플 | 헤드 유형 | 소수성 물질 (Hydrophobe) |
TEOS RR [Å/분] |
SiN RR [Å/분] |
TEOS RR/ SiN RR |
3A | 포스포네이트 | n-헥실 | 953 | 157 | 6 |
3B | 포스포네이트 | n-옥틸 | 906 | 138 | 7 |
3C | 포스포네이트 | n-데실 | 895 | 146 | 6 |
3D | 포스포네이트 | n-도데실 | 940 | 3 | 313 |
3E | 포스포네이트 | n-테트라데실 | 919 | 3 | 306 |
3F | 포스포네이트 | n-헥사데실 | 855 | 2 | 427 |
3G | 포스포네이트 | n-옥타데실 | 811 | 2 | 405 |
3H | 포스페이트 | 헥실(C6) | 946 | 139 | 7 |
3I | 포스페이트 | 라우릴/미리스틸 (C12/C14) |
925 | 4 | 231 |
3J | 포스페이트 | 스테아릴(C18) | 835 | 3 | 279 |
3K | 포스페이트 | 베헤닐(C22) | 828 | 2 | 414 |
3L | 포스페이트 | 라세릴(C32) | 898 | 23 | 39 |
샘플 | 압력[psi] | HDP RR[Å/분] | TEOS RR[Å/분] | BPSG RR[Å/분] | SiN RR[Å/분] |
4A | 2 | 1147 | 1835 | 4971 | 4 |
4B | 3 | 1506 | 2324 | 6675 | 2 |
4C | 4 | 1752 | 3140 | 8173 | 1 |
샘플 | 패드(Pad) | 질화물 제거율 감소제 | TEOS RR [Å/분] |
SiN RR [Å/분] |
TEOS RR/ SiN RR |
5A | Dow VP6000 | 스테아릴 포스페이트 | 745 | 2 | 373 |
5B | n-옥타데실 포스포네이트 | 756 | 1 | 756 | |
5C | 올레일 포스페이트 | 835 | 3 | 278 | |
5A | Fujibo H800 | 스테아릴 포스페이트 | 951 | 8 | 119 |
5B | n-옥타데실 포스포네이트 | 942 | 2 | 471 | |
5C | 올레일 포스페이트 | 970 | 61 | 16 |
샘플 | 음이온성 디싱 감소 중합체 |
디싱[Å] 5 ㎛ 피쳐 │ 50% 밀집 |
디싱[Å] 20 ㎛ 피쳐 │ 50% 밀집 |
6A | - | 1194 | 1223 |
6B | 카라기난 | 96 | 180 |
6C | 잔탄 검 | 37 | 1068 |
6D | 카르복시메틸셀룰로오스 | 172 | 900 |
샘플 | 유형 | pH | MPS [nm] 0 일 |
MPS [nm] 7 일 |
MPS [nm] 14 일 |
MPS [nm] 21 일 |
7A | 2× 단일 포트 | 2.2 | 68 | 69 | 69 | 69 |
7B | 2× 단일 포트 | 3.0 | 65 | 65 | 66 | 66 |
7C | 5× 2-부분 | 9.5 | 72 | 73 | 73 | 74 |
샘플 |
어레이 활성 라인 폭 (㎛) |
어레이 피치 (㎛) |
어레이 패턴 밀도 (%) |
산화규소 제거율 (Å/분) |
질화규소 제거율 (Å/분) |
선택성 |
8A | 5 | 50 | 10 | 1301 | 15 | 86.7 |
45 | 50 | 90 | 749 | 8 | 93.6 | |
0.18 | 0.36 | 50 | 1330 | 7 | 190.0 | |
0.50 | 1.00 | 50 | 1072 | 10 | 107.2 | |
100 | 200 | 50 | 1920 | 18.0 | 106.6 | |
8B | 100 | 200 | 50 | 1710 | 31.8 | 53.8 |
8C | 0.05 | 0.5 | 10 | 1043 | 238 | 4.3 |
샘플 | 어레이 활성 라인 폭(㎛) | 어레이 피치 (㎛) |
어레이 패턴 밀도(%) | 산화물 디싱 (Å) |
질화규소 부식(Å) | 평탄화 효율 (%) |
9A | 5 | 50 | 10 | 40 | 74 | 46 |
45 | 50 | 90 | 157 | 10 | 38 | |
0.18 | 0.36 | 50 | 48 | 70 | 14 | |
0.50 | 1.00 | 50 | 35.6 | 60 | 17 | |
100 | 200 | 50 | 245 | 30 | 74 | |
9B | 100 | 200 | 50 | 375 | 34 | 72 |
Claims (24)
- 연마 조성물(polishing composition)로서,
적어도 하나의 연마제;
소수성 부분과 친수성 부분을 포함하는 적어도 하나의 질화물 제거율 감소제(nitride removal rate reducing agent), 여기에서 소수성 부분은 C12 내지 C40 탄화수소기를 포함하고 친수성 부분으로부터 0개 내지 10개의 알킬렌 산화물 기에 의해 분리되는 것임;
산 또는 염기; 및
물
을 포함하며;
연마 조성물은 약 2 내지 약 6.5의 pH를 가지고; 그리고
연마 조성물은 적어도 산화규소로 오버레이된 적어도 질화규소 패턴을 포함하는 패턴화된 웨이퍼를 연마할 때, 적어도 약 3:1의 산화규소에 대한 제거율 대 질화규소에 대한 제거율의 비를 가지는 연마 조성물. - 제1항에 있어서,
소수성 부분은 C14 내지 C32 탄화수소기를 포함하는 것인 연마 조성물. - 제1항에 있어서,
소수성 부분은 C16 내지 C22 탄화수소기를 포함하는 것인 연마 조성물. - 제1항에 있어서,
친수성 부분은 설피나이트기(sulfinite group), 설페이트기, 설포네이트기, 카르복실레이트기, 포스페이트기 및 포스포네이트기로 이루어지는 군으로부터 선택되는 적어도 하나의 기를 포함하는 것인 연마 조성물. - 제1항에 있어서,
친수성 부분은 포스페이트기 또는 포스포네이트기를 포함하는 것인 연마 조성물. - 제1항에 있어서,
질화물 제거율 감소제는 나프탈렌설폰산-포르말린 축합물(condensate), 라우릴 포스페이트, 미리스틸 포스페이트, 스테아릴 포스페이트, 옥타데실포스폰산, 올레일 포스페이트, 베헤닐 포스페이트, 옥타데실 설페이트, 라세릴 포스페이트, 올레쓰-3-포스페이트 및 올레쓰-10-포스페이트로 이루어지는 군으로부터 선택되는 것인 연마 조성물. - 제1항에 있어서,
적어도 하나의 연마제는 알루미나, 실리카, 티타니아, 세리아(ceria), 지르코니아, 이들의 공동 형성 생성물(co-formed products), 코팅된 연마제, 표면 변성 연마제 및 이들의 혼합물로 이루어지는 군으로부터 선택되는 것인 연마 조성물. - 제1항에 있어서,
적어도 하나의 연마제는 양이온성 연마제, 실질적으로 중성인 연마제 및 음이온성 연마제로 이루어지는 군으로부터 선택되는 것인 연마 조성물. - 제1항에 있어서,
연마제는 실리카계 연마제인 것인 연마 조성물. - 제1항에 있어서,
적어도 하나의 디싱 감소제(dishing reducing agent)를 더 포함하고;
여기에서 적어도 하나의 디싱 감소제는 하이드록실, 설페이트, 포스포네이트, 포스페이트, 설포네이트, 아민, 나이트레이트, 나이트라이트, 카르복실레이트 및 카보네이트 기로 이루어지는 군으로부터 선택되는 적어도 하나의 기를 포함하는 화합물인 것인 연마 조성물. - 제10항에 있어서,
적어도 하나의 디싱 감소제는 다당류 및 치환된 다당류로 이루어지는 군으로부터 선택되는 적어도 하나인 것인 연마 조성물. - 제1항에 있어서,
연마 조성물은 적어도 산화규소로 오버레이된 적어도 질화규소 패턴을 포함하는 패턴화된 웨이퍼를 연마할 때 적어도 약 4:1의 산화규소에 대한 제거율 대 질화규소에 대한 제거율의 비를 갖는 것인 연마 조성물. - 제1항에 있어서,
질화규소에 대한 산화규소의 제거율 선택성(selectivity)은 적어도 약 5:1 및 최대 약 1000:1인 것인 연마 조성물. - 제1항에 있어서,
조성물은 최대 약 1000 Å 및 적어도 약 0 Å의 산화규소 디싱을 갖는 것인 연마 조성물. - 제1항에 있어서,
조성물은 최대 약 375 Å의 산화규소 디싱을 갖는 것인 연마 조성물. - 제1항에 있어서,
조성물은 최대 약 500 Å 및 적어도 약 0 Å의 질화규소 부식(erosion)을 갖는 것인 연마 조성물. - 제1항에 있어서,
조성물은 최대 약 75 Å의 질화규소 부식을 갖는 것인 연마 조성물. - 제1항에 있어서,
조성물은 적어도 약 14%의 평탄화 효율(planarization efficiency)을 갖는 것인 연마 조성물. - 제1항에 있어서,
조성물은 적어도 약 14% 및 최대 약 100%의 평탄화 효율을 갖는 것인 연마 조성물. - 제1항에 있어서,
조성물은 조성물을 사용하여 패턴화된 웨이퍼를 연마할 때 약 300 mm의 직경을 갖는 패턴화된 웨이퍼 상에 최대 총 175개의 결함(defect)을 형성하는 것인 연마 조성물. - 기판의 표면상에 적어도 질화규소 및 적어도 산화규소를 갖는 기판에 제1항의 연마 조성물을 도포하는 단계; 및
패드(pad)를 기판의 표면과 접촉시키고 기판에 대해 패드를 이동시키는 단계
를 포함하는 방법. - 제21항에 있어서,
질화규소와 산화규소 중 적어도 하나는 탄소, 질소, 산소 및 수소로 이루어지는 군으로부터 선택되는 적어도 하나의 도펀트(dopant)로 도핑되는 것인 방법. - 제21항에 있어서,
기판으로부터 반도체 디바이스를 형성하는 단계를 더 포함하는 것인 방법. - 제22항에 있어서,
기판으로부터 반도체 디바이스를 형성하는 단계를 더 포함하는 것인 방법.
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TW202024286A (zh) | 2020-07-01 |
TWI749324B (zh) | 2021-12-11 |
US10763119B2 (en) | 2020-09-01 |
KR102303865B1 (ko) | 2021-09-17 |
JP2025078660A (ja) | 2025-05-20 |
SG11202106585UA (en) | 2021-07-29 |
CN114736612B (zh) | 2023-09-26 |
CN111334193B (zh) | 2022-05-24 |
EP3670620B1 (en) | 2023-10-11 |
JP7644010B2 (ja) | 2025-03-11 |
EP3670620A1 (en) | 2020-06-24 |
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US20220375758A1 (en) | 2022-11-24 |
CN114736612A (zh) | 2022-07-12 |
US20200203172A1 (en) | 2020-06-25 |
US20200343098A1 (en) | 2020-10-29 |
JP2022514787A (ja) | 2022-02-15 |
WO2020131155A1 (en) | 2020-06-25 |
CN111334193A (zh) | 2020-06-26 |
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