KR101695578B1 - 산화물 소결체 및 스퍼터링 타깃, 및 그 제조 방법 - Google Patents
산화물 소결체 및 스퍼터링 타깃, 및 그 제조 방법 Download PDFInfo
- Publication number
- KR101695578B1 KR101695578B1 KR1020157006264A KR20157006264A KR101695578B1 KR 101695578 B1 KR101695578 B1 KR 101695578B1 KR 1020157006264 A KR1020157006264 A KR 1020157006264A KR 20157006264 A KR20157006264 A KR 20157006264A KR 101695578 B1 KR101695578 B1 KR 101695578B1
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- oxide
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- sintered body
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- 238000005477 sputtering target Methods 0.000 title claims description 33
- 238000004519 manufacturing process Methods 0.000 title description 22
- 239000011701 zinc Substances 0.000 claims abstract description 86
- 239000013078 crystal Substances 0.000 claims abstract description 34
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000002441 X-ray diffraction Methods 0.000 claims abstract description 14
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910001195 gallium oxide Inorganic materials 0.000 claims abstract description 11
- 229910003437 indium oxide Inorganic materials 0.000 claims abstract description 10
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 claims abstract description 10
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910001887 tin oxide Inorganic materials 0.000 claims abstract description 10
- 239000011787 zinc oxide Substances 0.000 claims abstract description 8
- 229910006404 SnO 2 Inorganic materials 0.000 claims description 31
- 150000001875 compounds Chemical class 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 29
- 238000005245 sintering Methods 0.000 claims description 28
- 238000002156 mixing Methods 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 229910052733 gallium Inorganic materials 0.000 claims description 12
- 229910052738 indium Inorganic materials 0.000 claims description 12
- 239000012298 atmosphere Substances 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 229910052718 tin Inorganic materials 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 3
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 3
- 239000011261 inert gas Substances 0.000 claims description 2
- 238000004544 sputter deposition Methods 0.000 description 27
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- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- 230000002547 anomalous effect Effects 0.000 description 4
- 238000007731 hot pressing Methods 0.000 description 4
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- 238000007088 Archimedes method Methods 0.000 description 3
- 229910007541 Zn O Inorganic materials 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000000280 densification Methods 0.000 description 3
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- 239000007789 gas Substances 0.000 description 3
- 239000011812 mixed powder Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 229910005191 Ga 2 O 3 Inorganic materials 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000002447 crystallographic data Methods 0.000 description 2
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- 238000001755 magnetron sputter deposition Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
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- 238000005070 sampling Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
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- 239000011521 glass Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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- 239000012299 nitrogen atmosphere Substances 0.000 description 1
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- 230000003287 optical effect Effects 0.000 description 1
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- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 229920005646 polycarboxylate Polymers 0.000 description 1
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Abstract
Description
도 2는 본 발명의 제조 방법에 사용되는 소결 공정의 일례를 나타내는 그래프이다.
Claims (14)
- 산화아연과; 산화인듐과; 산화갈륨과; 산화주석을 혼합 및 소결하여 얻어지는 산화물 소결체이며,
상기 산화물 소결체의 상대 밀도가 85% 이상,
상기 산화물 소결체의 평균 결정립경이 10㎛ 미만이고,
상기 산화물 소결체를 X선 회절하였을 때,
Zn2SnO4상, InGaZnO4상, InGaZn2O5상 및 SnO2상의 합계 비율은 전체 화합물상에 대하여 75%이상이고,
Zn2SnO4상과 InGaZnO4상의 체적비가 각각 하기 식 (1)∼(3)을 만족하고,
[식 (1)]
(Zn2SnO4상+InGaZnO4상)/(Zn2SnO4상+InGaZnO4상+InGaZn2O5상+SnO2상)≥70체적%
[식 (2)]
Zn2SnO4상/(Zn2SnO4상+InGaZnO4상+InGaZn2O5상+SnO2상)≥30체적%
[식 (3)]
InGaZnO4상/(Zn2SnO4상+InGaZnO4상+InGaZn2O5상+SnO2상)≥10체적%
또한,
InGaZn2O5상의 체적비가 하기 식 (4)를 만족하는 것인 것을 특징으로 하는, 산화물 소결체.
[식 (4)]
InGaZn2O5상/(Zn2SnO4상+InGaZnO4상+InGaZn2O5상+SnO2상)≤3체적% - 제1항에 있어서,
상기 산화물 소결체에 포함되는 전체 금속 원소에 대한 아연, 인듐, 갈륨, 주석의 함유량의 비율(원자%)을 각각, [Zn], [In], [Ga], [Sn]이라고 하였을 때, 하기 식 (5)∼(7)을 만족하는 것인, 산화물 소결체.
[식 (5)]
40원자%≤[Zn]≤50원자%
[식 (6)]
30원자%≤([In]+[Ga])≤45원자%
(단, [In]은 4원자% 이상, [Ga]은 5원자% 이상)
[식 (7)]
15원자%≤[Sn]≤25원자% - 제1항에 있어서,
상기 평균 결정립경이 0.1㎛ 이상인 것을 특징으로 하는, 산화물 소결체. - 제1항에 있어서,
상기 상대 밀도가 110% 이하인 것을 특징으로 하는, 산화물 소결체. - 제1항에 있어서,
상기 Zn2SnO4상과 InGaZnO4상의 체적비가 하기 식 (1‘)를 만족하는 것을 특징으로 하는, 산화물 소결체.
[식 (1‘)]
(Zn2SnO4상+InGaZnO4상)/(Zn2SnO4상+InGaZnO4상+InGaZn2O5상+SnO2상)≤100체적% - 제1항에 있어서,
상기 Zn2SnO4상의 체적비가 하기 식 (2‘)를 만족하는 것을 특징으로 하는, 산화물 소결체.
[식 (2‘)]
Zn2SnO4상/(Zn2SnO4상+InGaZnO4상+InGaZn2O5상+SnO2상)≤90체적% - 제1항에 있어서,
상기 InGaZnO4상의 체적비가 하기 식 (3‘)를 만족하는 것을 특징으로 하는, 산화물 소결체.
[식 (3‘)]
InGaZnO4상/(Zn2SnO4상+InGaZnO4상+InGaZn2O5상+SnO2상)≤60체적% - 제1항에 있어서,
상기 InGaZn2O5상의 체적비가 하기 식 (4‘)를 만족하는 것을 특징으로 하는, 산화물 소결체.
[식 (4‘)]
InGaZn2O5상/(Zn2SnO4상+InGaZnO4상+InGaZn2O5상+SnO2상)≥0체적% - 제1항 내지 제8항 중 어느 한 항에 기재된 산화물 소결체를 사용하여 얻어지는 스퍼터링 타깃이며, 비저항이 1Ω·㎝ 이하인 것 특징으로 하는, 스퍼터링 타깃.
- 제9항에 있어서,
상기 비저항이 10- 7Ω·㎝ 이상인 것을 특징으로 하는, 스퍼터링 타깃. - 제1항 내지 제8항 중 어느 한 항에 기재된 산화물 소결체의 제조 방법이며, 산화아연과; 산화인듐과; 산화갈륨과; 산화주석을 혼합하는 공정, 혼합에 의해 얻어지는 혼합물을 흑연형에 세트하고, 600℃/hr 이하의 평균 승온 속도로 소결 온도 950∼1150℃까지 승온하는 공정, 상기 소결 온도 영역에서의 유지 시간 0.1∼5시간에 소결하는 공정을 이 순서로 포함하는 것을 특징으로 하는, 산화물 소결체의 제조 방법.
- 제11항에 있어서,
상기 평균 승온 속도가 10℃/hr 이상인 것을 특징으로 하는, 산화물 소결체의 제조 방법. - 제11항에 있어서,
상기 소결 온도를 975∼1150℃로 하는, 산화물 소결체의 제조 방법. - 제11항에 있어서,
상기 소결은 불활성 가스 분위기에서 실시하는, 산화물 소결체의 제조 방법.
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