JP7181898B2 - 窒化アルミニウム焼結体およびこれを含む半導体製造装置用部材 - Google Patents
窒化アルミニウム焼結体およびこれを含む半導体製造装置用部材 Download PDFInfo
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- JP7181898B2 JP7181898B2 JP2019564032A JP2019564032A JP7181898B2 JP 7181898 B2 JP7181898 B2 JP 7181898B2 JP 2019564032 A JP2019564032 A JP 2019564032A JP 2019564032 A JP2019564032 A JP 2019564032A JP 7181898 B2 JP7181898 B2 JP 7181898B2
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- aluminum nitride
- sintered body
- ceramic heater
- semiconductor manufacturing
- nitride sintered
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- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 title claims description 92
- 238000004519 manufacturing process Methods 0.000 title claims description 37
- 239000004065 semiconductor Substances 0.000 title claims description 29
- 239000010936 titanium Substances 0.000 claims description 43
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 claims description 36
- 239000000843 powder Substances 0.000 claims description 33
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 31
- 239000000919 ceramic Substances 0.000 claims description 30
- 229910052719 titanium Inorganic materials 0.000 claims description 30
- 238000000034 method Methods 0.000 claims description 17
- 238000005245 sintering Methods 0.000 claims description 11
- 229910052727 yttrium Inorganic materials 0.000 claims description 7
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 7
- 230000005684 electric field Effects 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 description 17
- 239000012535 impurity Substances 0.000 description 15
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 12
- 230000000052 comparative effect Effects 0.000 description 8
- 229910010293 ceramic material Inorganic materials 0.000 description 7
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 6
- 235000012431 wafers Nutrition 0.000 description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 239000000654 additive Substances 0.000 description 4
- 230000000996 additive effect Effects 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- -1 aluminate compound Chemical class 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 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
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 230000005686 electrostatic field Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000014509 gene expression Effects 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000010948 rhodium Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy 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
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 150000004677 hydrates Chemical class 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N oxygen(2-);yttrium(3+) Chemical group [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 238000001694 spray drying Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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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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Description
窒化アルミニウム焼結体
窒化アルミニウム焼結体の製造方法
実施例1
実施例2~7および比較例1~9
密度×比熱×拡散係数=熱伝導率(W/mK) (式1)
半導体製造装置用部材
Claims (11)
- 窒化アルミニウム焼結体を含む半導体製造装置用セラミックヒータであって、
前記焼結体はイットリウムおよびチタニウムを含有し、
前記焼結体の総重量を基準に、前記イットリウムはY2O3に換算した時に1~5重量%含まれ、Tiは17~31ppm含まれ、
400℃の温度および500V/mmの電場条件で2.0×109~4.0×1011Ω・cmの範囲の体積抵抗値を有することを特徴とする、半導体製造装置用セラミックヒータ。 - 前記イットリウムは、Y2O3換算を基準に3~5重量%含まれることを特徴とする、請求項1に記載の半導体製造装置用セラミックヒータ。
- Ti/Y2O3の質量比は、0.0006~0.002であることを特徴とする、請求項1に記載の半導体製造装置用セラミックヒータ。
- Ti/Y2O3の質量比は、0.0004~0.002であることを特徴とする、請求項1に記載の半導体製造装置用セラミックヒータ。
- 前記窒化アルミニウム焼結体に埋め込まれた導電性ヒータ部材、および
前記導電性ヒータ部材に連結された電力供給部を含むことを特徴とする、請求項1に記載の半導体製造装置用セラミックヒータ。 - 125W/mK以上の熱伝導率を有することを特徴とする、請求項1に記載の半導体製造装置用セラミックヒータ。
- チタニウム、イットリウムおよび窒化アルミニウムを含む焼結体からなる半導体製造装置用セラミックヒータを製造する方法であって、
チタニウムソース、酸化イットリウムおよび窒化アルミニウムを含む原料粉末を混合するステップ、および
前記混合された原料粉末を1700~2000℃の温度で焼結して焼結体を製造するステップを含み、
前記混合ステップの原料粉末中の酸化イットリウムは1~5wt%であり、
前記焼結体中のTi含量は17~31ppmであり、
400℃の温度および500V/mmの電場条件で2.0×109~4.0×1011Ω・cmの範囲の体積抵抗値を有することを特徴とする、セラミックヒータの製造方法。 - 前記酸化イットリウムは、3~5重量%であることを特徴とする、請求項7に記載のセラミックヒータの製造方法。
- 前記Ti含量と前記酸化イットリウムの比率は0.0006~0.002であることを特徴とする、請求項7に記載のセラミックヒータの製造方法。
- 前記Ti含量と前記酸化イットリウムの比率は0.0004~0.002であることを特徴とする、請求項7に記載のセラミックヒータの製造方法。
- 100W/mK以上の熱伝導率を有することを特徴とする、請求項7に記載のセラミックヒータの製造方法。
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