KR20190058572A - 세리아계 복합미립자 분산액, 그의 제조방법 및 세리아계 복합미립자 분산액을 포함하는 연마용 지립분산액 - Google Patents
세리아계 복합미립자 분산액, 그의 제조방법 및 세리아계 복합미립자 분산액을 포함하는 연마용 지립분산액 Download PDFInfo
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- KR20190058572A KR20190058572A KR1020197011807A KR20197011807A KR20190058572A KR 20190058572 A KR20190058572 A KR 20190058572A KR 1020197011807 A KR1020197011807 A KR 1020197011807A KR 20197011807 A KR20197011807 A KR 20197011807A KR 20190058572 A KR20190058572 A KR 20190058572A
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- KR
- South Korea
- Prior art keywords
- particles
- ceria
- silica
- cerium
- composite fine
- 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
- 239000010419 fine particle Substances 0.000 title claims abstract description 461
- 239000006185 dispersion Substances 0.000 title claims abstract description 324
- 239000002131 composite material Substances 0.000 title claims abstract description 292
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 title claims abstract description 178
- 229910052684 Cerium Inorganic materials 0.000 title claims abstract description 176
- 238000004519 manufacturing process Methods 0.000 title description 69
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 882
- 239000002245 particle Substances 0.000 claims abstract description 530
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 412
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims abstract description 295
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims abstract description 295
- 238000002441 X-ray diffraction Methods 0.000 claims abstract description 37
- 238000009826 distribution Methods 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims description 70
- 239000000758 substrate Substances 0.000 claims description 67
- 239000007788 liquid Substances 0.000 claims description 58
- 239000002243 precursor Substances 0.000 claims description 47
- 229910052751 metal Inorganic materials 0.000 claims description 44
- 239000002184 metal Substances 0.000 claims description 44
- 150000003839 salts Chemical class 0.000 claims description 43
- 239000012535 impurity Substances 0.000 claims description 42
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- 125000002091 cationic group Chemical group 0.000 claims description 18
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- 229910052791 calcium Inorganic materials 0.000 claims description 14
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 229910052749 magnesium Inorganic materials 0.000 claims description 14
- 238000001354 calcination Methods 0.000 claims description 13
- 229910052719 titanium Inorganic materials 0.000 claims description 13
- 229910052725 zinc Inorganic materials 0.000 claims description 13
- 229910052804 chromium Inorganic materials 0.000 claims description 12
- 229910052802 copper Inorganic materials 0.000 claims description 12
- 229910052759 nickel Inorganic materials 0.000 claims description 12
- 229910052700 potassium Inorganic materials 0.000 claims description 12
- 229910052709 silver Inorganic materials 0.000 claims description 12
- 230000001133 acceleration Effects 0.000 claims description 11
- 229910052776 Thorium Inorganic materials 0.000 claims description 9
- 229910052770 Uranium Inorganic materials 0.000 claims description 9
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- 210000000582 semen Anatomy 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 5
- RBZGEUJLKTVORU-UHFFFAOYSA-N 12014-84-5 Chemical compound [Ce]#[Si] RBZGEUJLKTVORU-UHFFFAOYSA-N 0.000 claims description 4
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 claims description 4
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- 239000000463 material Substances 0.000 abstract description 5
- QCVGEOXPDFCNHA-UHFFFAOYSA-N 5,5-dimethyl-2,4-dioxo-1,3-oxazolidine-3-carboxamide Chemical compound CC1(C)OC(=O)N(C(N)=O)C1=O QCVGEOXPDFCNHA-UHFFFAOYSA-N 0.000 abstract 1
- 102000002322 Egg Proteins Human genes 0.000 abstract 1
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- -1 Glycol ethers Chemical class 0.000 description 49
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- 239000011882 ultra-fine particle Substances 0.000 description 39
- 238000010304 firing Methods 0.000 description 33
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- 238000005259 measurement Methods 0.000 description 28
- 229910004298 SiO 2 Inorganic materials 0.000 description 27
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 24
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 23
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- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 21
- 239000007864 aqueous solution Substances 0.000 description 20
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 description 20
- 239000011259 mixed solution Substances 0.000 description 20
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 19
- 238000002360 preparation method Methods 0.000 description 19
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 18
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 18
- 229910000420 cerium oxide Inorganic materials 0.000 description 17
- 238000006243 chemical reaction Methods 0.000 description 17
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 17
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 16
- 230000032683 aging Effects 0.000 description 16
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- 235000012239 silicon dioxide Nutrition 0.000 description 15
- 239000011734 sodium Substances 0.000 description 15
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 230000002378 acidificating effect Effects 0.000 description 14
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 14
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 14
- 239000002253 acid Substances 0.000 description 13
- 238000003703 image analysis method Methods 0.000 description 13
- 239000000843 powder Substances 0.000 description 13
- 239000004094 surface-active agent Substances 0.000 description 13
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 12
- 239000002585 base Substances 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 12
- 239000011575 calcium Substances 0.000 description 12
- 239000010949 copper Substances 0.000 description 12
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 12
- 239000011777 magnesium Substances 0.000 description 12
- 239000000047 product Substances 0.000 description 12
- 239000003729 cation exchange resin Substances 0.000 description 11
- 239000010936 titanium Substances 0.000 description 11
- 239000011701 zinc Substances 0.000 description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- JIHMVMRETUQLFD-UHFFFAOYSA-N cerium(3+);dioxido(oxo)silane Chemical compound [Ce+3].[Ce+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O JIHMVMRETUQLFD-UHFFFAOYSA-N 0.000 description 10
- UNJPQTDTZAKTFK-UHFFFAOYSA-K cerium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[Ce+3] UNJPQTDTZAKTFK-UHFFFAOYSA-K 0.000 description 10
- 239000011651 chromium Substances 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 10
- 230000003746 surface roughness Effects 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 9
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- 239000004115 Sodium Silicate Substances 0.000 description 8
- 235000011054 acetic acid Nutrition 0.000 description 8
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- 150000002433 hydrophilic molecules Chemical class 0.000 description 8
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- 229910052911 sodium silicate Inorganic materials 0.000 description 8
- 238000003786 synthesis reaction Methods 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 7
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- 238000003917 TEM image Methods 0.000 description 6
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- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 6
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- CKMNQZXKOURUMB-UHFFFAOYSA-N cerium dimer Chemical group [Ce]#[Ce] CKMNQZXKOURUMB-UHFFFAOYSA-N 0.000 description 4
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- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 3
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Abstract
Description
도 2는 본 발명 복합미립자에 포함된 하나의 실시형태 단면의 모식도이다.
도 3은 본 발명의 복합미립자에 포함된 하나의 실시형태에 있어서 모입자 단면의 모식도이다.
도 4a는 실시예 2 복합미립자 SEM 이미지이고, 도 4b는 실시예 2 복합미립자 TEM 이미지이다.
도 5는 실시예 2의 X선 회절 패턴이다.
도 6a는 실시예 3 복합미립자 SEM 이미지이고, 도 6b는 실시예 3 복합미립자 TEM 이미지이다.
도 7은 실시예 3의 X선 회절 패턴이다.
도 8은 비교예 1의 X선 회절 패턴이다.
Claims (15)
- (1) 세리아계 복합미립자는 핵입자로 이루어진 모입자와 상기 모입자 표면 위에 세륨 함유 실리카층, 상기 세륨 함유 실리카층의 내부에 분산되어 있는 자입자를 포함하고, 상기 핵입자는 비정질 실리카를 주성분으로 하고 상기 자입자는 결정성 세리아를 주성분으로 함;
(2) 상기 자입자의 입자경 분포에 대한 변동계수(CV 값)가 14~40 %임;
(3) 상기 세리아계 복합미립자는 실리카 대 세리아 간의 질량비가 100 : 11~316임;
(4) 상기 세리아계 복합미립자는 X선 회절에 공급하면 세리아의 결정상만이 검출됨;
(5) 상기 세리아계 복합미립자는 X선 회절에 공급하여 측정된 상기 결정성 세리아의 평균 결정자 직경이 10~25nm임;
상기 (1) 항 내지 (5) 항의 특징을 지니는 평균입자경 50~350 nm의 세리아계 복합미립자를 포함하는 세리아계 복합미립자 분산액.
- 제 1항에 있어서,
(6) 상기 자입자가 포함된 결정성 세리아에 실리콘 원자가 고용되어 있음.
상기 (6)항의 특징을 더욱 지닌 세리아계 복합미립자를 포함하는 세리아계 복합미립자 분산액.
- 제 2항에 있어서, 상기 자입자에 포함된 세륨 원자 및 규소 원자에 관해서 세륨-규소 원자간 거리를 R1으로, 세륨-세륨 원자간 거리를 R2라고 할 때 R1<R2의 관계를 충족하는 세리아계 복합미립자 분산액.
- 제 1항 또는 제 2항에 있어서, 0.51μm 이상의 거대 입자로 되어있는 상기 세리아계 복합미립자의 수가 건조 환산으로 100 백만개/cc 이하임을 특징으로 하는 세리아계 복합미립자 분산액.
- 제 1항 또는 제 2항에 있어서, 상기 세리아계 복합미립자에 포함된 불순물의 함유 비율이 다음 (a) 및 (b)임을 특징으로 하는 세리아계 복합미립자 분산액.
(a) Na, Ag, Al, Ca, Cr, Cu, Fe, K, Mg, Ni, Ti 및 Zn의 함유율이 각각 100ppm 이하.
(b) U, Th, Cl, NO3, SO4 및 F의 함유율이 각각 5ppm 이하.
- 제 1항 또는 제 2항에 있어서, 상기 모입자는 핵입자 및 그 표면상의 돌기로 구성되며 상기 돌기는 실리카를 주성분으로 함을 특징으로 하는 세리아계 복합미립자 분산액.
- 제 6항에 있어서, 상기 모입자에 포함된 돌기의 폭이 5~25 nm의 범위에 있는 것을 특징으로 하는 세리아계 복합미립자 분산액.
- 제 1항 또는 제 2항에 있어서, 양이온 콜로이드 적정을 행한 경우에 하기식 (1)로 표시되는 유동전위변화량(ΔPCD)과 크닉(knick)에 있어서 양이온 콜로이드 적정액 첨가량(V)의 비(ΔPCD / V)가 -110.0 ~ -15.0이 되는 유동전위곡선이 수득되는 세리아계 복합미립자 분산액.
ΔPCD / V = (I-C) / V ... 식 (1)
C : 상기 크닉에 있어서 유동전위 (mV)
I : 상기 유동전위곡선의 개시점에 있어서 유동전위 (mV)
V : 상기 크닉에 있어서 상기 양이온 콜로이드 적정액의 첨가량 (ml)
- 제 1항 또는 제 2항에 기재된 세리아계 복합미립자 분산액을 포함하는 연마용 지립분산액.
- 제 9항에 있어서, 상기 연마용 지립분산액은 실리카막이 형성된 반도체 기판의 평탄화용으로 사용하는 것을 특징으로 하는 연마용 지립분산액.
- (공정 1) 실리카계 미립자를 용매에 분산시킨 실리카계 미립자 분산액을 교반하여 온도를 0~20℃, pH를 7.0~9.0, 산화환원전위를 50~500 mV로 유지하면서 여기에 세륨 금속염을 연속적 또는 간헐적으로 첨가하여 전구체 입자를 포함하는 전구체 입자분산액을 수득하는 공정;
(공정 2) 상기 전구체 입자분산액을 건조시키고 950~1,200℃에서 소성하여 수득된 소성체에 용매를 첨가하여 pH 8.6~10.8의 범위에서 습식으로 파쇄 분쇄 처리하여 소성체 파쇄 분쇄 분산액을 수득하는 공정;
(공정 3) 상기 소성체 파쇄 분쇄 분산액을 상대 원심가속도 300G 이상으로 원심분리 처리하고 연이어 침강 성분을 제거함으로써 세리아계 복합미립자 분산액을 수득하는 공정;
상기 (공정 1) 내지 (공정 3)을 포함하는 것을 특징으로 하는 세리아계 복합미립자 분산액의 제조방법.
- 제 11항에 있어서, 상기 공정 1은 상기 실리카계 미립자 분산액을 교반하고 온도를 0~20℃, pH를 7.0~9.0, 산화환원전위를 50~500 mV로 유지하면서 여기에 상기 세륨 금속염을 연속적 또는 간헐적으로 첨가한 후, 온도를 20℃ 초과 98℃ 이하, pH를 7.0~9.0, 산화환원전위를 50~500 mV로 유지하면서 여기에 상기 세륨 금속염을 연속적 또는 간헐적으로 첨가하여 상기 전구체 입자분산액을 수득하는 공정임을 특징으로 하는 세리아계 복합미립자 분산액의 제조방법.
- 제 11항 또는 제 12항에 있어서, 상기 공정 1은 상기 실리카계 미립자 분산액을 교반하고 온도를 20℃ 초과 98℃ 이하, pH를 7.0~9.0, 산화환원전위를 50~500 mV로 유지하면서 여기에 상기 세륨 금속염을 연속적 또는 간헐적으로 첨가한 후, 온도를 0~20℃, pH를 7.0~9.0, 산화환원전위를 50~500 mV로 유지하면서 여기에 상기 세륨 금속염을 연속적 또는 간헐적으로 첨가하여 상기 전구체 입자분산액을 수득하는 공정임을 특징으로 하는 세리아계 복합미립자 분산액의 제조방법.
- 제 11항 또는 제 12항에 있어서, 상기 공정 1에서 상기 실리카계 미립자에 포함된 불순물의 함유 비율이 다음의 (a) 및 (b)임을 특징으로 하는 세리아계 복합미립자 분산액의 제조방법.
(a) Na, Ag, Al, Ca, Cr, Cu, Fe, K, Mg, Ni, Ti 및 Zn의 함유율이 각각 100ppm 이하.
(b) U, Th, Cl, NO3, SO4 및 F의 함유율이 각각 5ppm 이하.
- 제 11항 또는 제 12항에 있어서, 상기 공정 1은 표면에 폭 5~25 nm의 돌기를 지니는 실리카계 미립자를 용매에 분산시킨 실리카계 미립자 분산액을 교반시키고, 온도를 3~20℃, pH를 7.0~9.0, 산화환원전위를 50~500 mV로 유지하면서 여기에 세륨 금속염을 연속적 또는 간헐적으로 첨가하여, 상기 전구체 입자를 포함하는 전구체 입자분산액을 수득하는 공정으로 청구항 제 6항 또는 제 7항의 세리아계 복합미립자분산액을 수득함을 특징으로 하는 세리아계 복합미립자 분산액의 제조방법.
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TWI734857B (zh) | 2021-08-01 |
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US20190248668A1 (en) | 2019-08-15 |
CN109937187B (zh) | 2022-08-09 |
EP3539926A4 (en) | 2020-05-27 |
TW201825398A (zh) | 2018-07-16 |
KR102268320B1 (ko) | 2021-06-22 |
WO2018088088A1 (ja) | 2018-05-17 |
CN109937187A (zh) | 2019-06-25 |
US10920120B2 (en) | 2021-02-16 |
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