JP4177857B2 - 半導体装置およびその製造方法 - Google Patents
半導体装置およびその製造方法 Download PDFInfo
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- JP4177857B2 JP4177857B2 JP2006125735A JP2006125735A JP4177857B2 JP 4177857 B2 JP4177857 B2 JP 4177857B2 JP 2006125735 A JP2006125735 A JP 2006125735A JP 2006125735 A JP2006125735 A JP 2006125735A JP 4177857 B2 JP4177857 B2 JP 4177857B2
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- insulating film
- semiconductor device
- tetragonal
- oxygen
- film
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- 239000004065 semiconductor Substances 0.000 title claims description 51
- 238000004519 manufacturing process Methods 0.000 title claims description 39
- 239000013078 crystal Substances 0.000 claims description 67
- 239000001301 oxygen Substances 0.000 claims description 56
- 229910052760 oxygen Inorganic materials 0.000 claims description 56
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 55
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical group [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 claims description 51
- 238000000034 method Methods 0.000 claims description 23
- 239000000758 substrate Substances 0.000 claims description 20
- 238000000137 annealing Methods 0.000 claims description 15
- 230000010287 polarization Effects 0.000 claims description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 2
- 239000010436 fluorite Substances 0.000 claims description 2
- 239000010408 film Substances 0.000 description 158
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 50
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 48
- 238000010438 heat treatment Methods 0.000 description 30
- 238000002441 X-ray diffraction Methods 0.000 description 24
- 239000000203 mixture Substances 0.000 description 24
- 229910052757 nitrogen Inorganic materials 0.000 description 24
- 241000588731 Hafnia Species 0.000 description 15
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(IV) oxide Inorganic materials O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 15
- 206010021143 Hypoxia Diseases 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 8
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 8
- 238000010587 phase diagram Methods 0.000 description 8
- 229910004298 SiO 2 Inorganic materials 0.000 description 7
- 229910052710 silicon Inorganic materials 0.000 description 7
- 230000002950 deficient Effects 0.000 description 5
- 229910052735 hafnium Inorganic materials 0.000 description 5
- 238000004544 sputter deposition Methods 0.000 description 5
- 229910052726 zirconium Inorganic materials 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 3
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 238000004833 X-ray photoelectron spectroscopy Methods 0.000 description 2
- 229910006501 ZrSiO Inorganic materials 0.000 description 2
- 229910007735 Zr—Si Inorganic materials 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical group O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910004129 HfSiO Inorganic materials 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910000449 hafnium oxide Inorganic materials 0.000 description 1
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- -1 oxygen ions Chemical class 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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Description
このような背景から誘電率の高い絶縁膜(high−k膜)が研究され、ハフニウムを含むゲート絶縁膜が現時点で有望と考えられている。しかしハフニウムを含むゲート絶縁膜の誘電率は、最大の値でも25程度である。実際にはハフニウムの比率がより低い組成で使われる可能性も高いため、high−k膜とはいっても12程度の比誘電率しか実現できていない。
G.-M.Ringanese, X.Gonze, G.Jun, K.Cho, A.Pasquarello, Phys.Rev.B69, 184301(2004). H.Kita, K.Kyuno, A.Toriumi, Appl.Phys.Lett.86,102906(2005). 富田一行、喜多浩之、弓野健太郎、鳥海明、2006年春応用物理学術講演会予稿集25p−V−3。
本発明の第1実施形態による半導体装置の製造方法を説明する。
次に、本発明の第2実施形態による半導体装置の製造方法を説明する。
次に、本発明の第3実施形態による半導体装置の製造方法を説明する。
次に、本発明の第4実施形態による半導体装置の製造方法を説明する。
次に、本発明の第5実施形態による半導体装置を説明する。本実施形態の半導体装置は、第1乃至第4実施形態の製造方法によって製造された半導体装置の絶縁膜を、(Zr1−zHfz)xSi1−xO2―y(ただし0≦z≦1、0.86≦x≦0.99、0.04≦y≦0.25)からなる絶縁膜に置き換えた構成となっている。
次に、本発明の第6実施形態による半導体装置を説明する。
20 半導体基板
21 素子分離領域
22 pウェル領域
23 nウェル領域
24 ゲート絶縁膜
25 ゲート電極
26 ゲート電極
27 ゲート側壁
28 ソース・ドレイン領域
29 ソース・ドレイン領域
32 nチャネルMOSFET
33 pチャネルMOSFET
40 半導体基板
42 ゲート絶縁膜
44 ゲート電極
45 浮遊ゲート
46 電極間絶縁膜
47 制御ゲート
48 ゲート側壁
49 ソース・ドレイン
Claims (9)
- 半導体基板上に、(HfzZr1−z)xSi1−xO2−y(0.81≦x≦0.99、0.04≦y≦0.25、0≦z≦1)を含むアモルファス膜を形成するステップと、
酸素を含む雰囲気下において前記アモルファス膜に750℃以上のアニール処理を施し、正方晶である(HfzZr1−z)xSi1−xO2を含む絶縁膜にするステップと、
を備えたことを特徴とする半導体装置の製造方法。 - 前記アニ−ル処理を行う際の雰囲気圧力は大気圧であることを特徴とする請求項1記載の半導体装置の製造方法。
- 前記酸素を含む雰囲気における酸素含有量は、1%以上であることを特徴とする請求項1または2記載の半導体装置の製造方法。
- 半導体基板上に設けられた(HfzZr1−z)xSi1−xO2(0.81≦x≦0.99、0≦z≦1)を含む絶縁膜を備え、
前記絶縁膜は正方晶の蛍石型結晶構造を主相とし、
前記絶縁膜中の正方晶の分子容Vmは、前記(HfzZr1−z)xSi1−xO2あたり、0.03353nm3≦Vm≦0.03424nm3の範囲にあり、
前記絶縁膜の物理膜厚は110nm以下であることを特徴とする半導体装置。 - 前記絶縁膜中の正方晶の単位格子の格子定数a、b、cはそれぞれ、0.3590nm≦a≦0.3608nm、0.3590nm≦b≦0.3608nm、0.5183nm≦c≦0.5212nmの範囲にあることを特徴とする請求項4記載の半導体装置。
- 前記絶縁膜の比誘電率は20以上、26以下であり、
前記絶縁膜を構成する原子のモル分極αが0.00679nm3<α≦0.00735nm3であることを特徴とする請求項4または5記載の半導体装置。 - 前記絶縁膜中の正方晶におけるa’軸は、前記絶縁膜の膜厚方向に実質的に平行であることを特徴とする請求項4乃至6のいずれかに記載の半導体装置。
- 前記絶縁膜はCMOSFETのゲート絶縁膜であることを特徴とする請求項4乃至7のいずれかに記載の半導体装置。
- 前記絶縁膜はフラッシュメモリの電極間絶縁膜であることを特徴とする請求項4乃至7のいずれかに記載の半導体装置。
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JP2006125735A JP4177857B2 (ja) | 2006-04-28 | 2006-04-28 | 半導体装置およびその製造方法 |
US11/790,854 US8115261B2 (en) | 2006-04-28 | 2007-04-27 | Semiconductor device and method for manufacturing the same |
KR1020070041398A KR100838916B1 (ko) | 2006-04-28 | 2007-04-27 | 반도체 장치 및 그 제조 방법 |
CNB2007101009376A CN100524643C (zh) | 2006-04-28 | 2007-04-28 | 半导体装置及其制造方法 |
US13/348,772 US20120108078A1 (en) | 2006-04-28 | 2012-01-12 | Semiconductor device and method for manufacturing the same |
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WO2010048975A1 (de) * | 2008-10-31 | 2010-05-06 | Leybold Optics Gmbh | Hafniumoxid-beschichtung |
US20100279124A1 (en) | 2008-10-31 | 2010-11-04 | Leybold Optics Gmbh | Hafnium or zirconium oxide Coating |
EP2379767B1 (de) * | 2008-10-31 | 2020-06-10 | Bühler Alzenau GmbH | Hafnium- oder zirkoniumoxid-beschichtung |
CN102007583B (zh) | 2008-10-31 | 2013-02-13 | 佳能安内华股份有限公司 | 介电膜的制造方法、半导体装置的制造方法以及介电膜 |
WO2010098121A1 (ja) | 2009-02-27 | 2010-09-02 | キヤノンアネルバ株式会社 | 誘電体ならびに半導体装置の製造方法、プログラム、および、記録媒体 |
FR2948691B1 (fr) * | 2009-07-30 | 2013-02-15 | Snecma | Methode de fabrication d'une couche de revetement ceramique recouvrant un substrat |
CN102208346B (zh) * | 2011-04-22 | 2013-08-28 | 南京大学 | 非易失性电荷捕获型存储器件、其制备方法及应用 |
US8760845B2 (en) * | 2012-02-10 | 2014-06-24 | Nanya Technology Corp. | Capacitor dielectric comprising silicon-doped zirconium oxide and capacitor using the same |
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- 2007-04-27 US US11/790,854 patent/US8115261B2/en not_active Expired - Fee Related
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- 2007-04-28 CN CNB2007101009376A patent/CN100524643C/zh not_active Expired - Fee Related
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US20120108078A1 (en) | 2012-05-03 |
JP2007299878A (ja) | 2007-11-15 |
US20070252232A1 (en) | 2007-11-01 |
KR100838916B1 (ko) | 2008-06-16 |
KR20070106451A (ko) | 2007-11-01 |
US8115261B2 (en) | 2012-02-14 |
CN101064252A (zh) | 2007-10-31 |
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