JP2006147935A - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP2006147935A JP2006147935A JP2004337654A JP2004337654A JP2006147935A JP 2006147935 A JP2006147935 A JP 2006147935A JP 2004337654 A JP2004337654 A JP 2004337654A JP 2004337654 A JP2004337654 A JP 2004337654A JP 2006147935 A JP2006147935 A JP 2006147935A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 22
- 239000003990 capacitor Substances 0.000 claims abstract description 44
- 238000009792 diffusion process Methods 0.000 claims abstract description 27
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 24
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 9
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 45
- 229910052741 iridium Inorganic materials 0.000 claims description 43
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 43
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 claims description 28
- 229910000457 iridium oxide Inorganic materials 0.000 claims description 25
- 229910052721 tungsten Inorganic materials 0.000 claims description 17
- 230000002265 prevention Effects 0.000 claims description 11
- 239000000758 substrate Substances 0.000 claims description 11
- 230000004888 barrier function Effects 0.000 claims description 6
- 229910052745 lead Inorganic materials 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 229910052758 niobium Inorganic materials 0.000 claims description 4
- 229910052707 ruthenium Inorganic materials 0.000 claims description 4
- 229910052715 tantalum Inorganic materials 0.000 claims description 4
- 229910052720 vanadium Inorganic materials 0.000 claims description 4
- 229910052726 zirconium Inorganic materials 0.000 claims description 4
- 239000004020 conductor Substances 0.000 abstract 6
- 230000002542 deteriorative effect Effects 0.000 abstract 1
- 239000010936 titanium Substances 0.000 description 67
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 63
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 41
- 229910052697 platinum Inorganic materials 0.000 description 30
- 238000004544 sputter deposition Methods 0.000 description 21
- 238000000034 method Methods 0.000 description 18
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 17
- 229910052814 silicon oxide Inorganic materials 0.000 description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 14
- 239000001301 oxygen Substances 0.000 description 14
- 229910052760 oxygen Inorganic materials 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 13
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 13
- 239000010937 tungsten Substances 0.000 description 13
- 238000005229 chemical vapour deposition Methods 0.000 description 10
- 229910052581 Si3N4 Inorganic materials 0.000 description 8
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 8
- 238000010438 heat treatment Methods 0.000 description 8
- 238000004151 rapid thermal annealing Methods 0.000 description 8
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 8
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 8
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000000206 photolithography Methods 0.000 description 5
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 5
- 229910004121 SrRuO Inorganic materials 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 229910016062 BaRuO Inorganic materials 0.000 description 1
- 229910018871 CoO 2 Inorganic materials 0.000 description 1
- 229910018921 CoO 3 Inorganic materials 0.000 description 1
- 241000877463 Lanio Species 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 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
- 239000007789 gas Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005121 nitriding Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
- G11C11/22—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using ferroelectric elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
- H01L28/55—Capacitors with a dielectric comprising a perovskite structure material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
- H01L28/60—Electrodes
- H01L28/65—Electrodes comprising a noble metal or a noble metal oxide, e.g. platinum (Pt), ruthenium (Ru), ruthenium dioxide (RuO2), iridium (Ir), iridium dioxide (IrO2)
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L28/00—Passive two-terminal components without a potential-jump or surface barrier for integrated circuits; Details thereof; Multistep manufacturing processes therefor
- H01L28/40—Capacitors
- H01L28/60—Electrodes
- H01L28/75—Electrodes comprising two or more layers, e.g. comprising a barrier layer and a metal layer
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B53/00—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory capacitors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B53/00—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory capacitors
- H10B53/30—Ferroelectric RAM [FeRAM] devices comprising ferroelectric memory capacitors characterised by the memory core region
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Semiconductor Memories (AREA)
- Electrodes Of Semiconductors (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
【解決手段】 下部電極と上部電極と誘電体膜とを含むキャパシタを備えた半導体装置であって、下部電極は、イリジウムを含む第1の導電膜117と、誘電体膜122と第1の導電膜との間に設けられ且つ貴金属膜で形成された第2の導電膜119と、誘電体膜と第2の導電膜との間に設けられ且つペロブスカイト構造を有する導電性金属酸化物膜で形成された第3の導電膜121と、第1の導電膜と第2との導電膜の間に設けられ且つ金属膜及び金属酸化物膜の少なくとも一方を含み且つ第1の導電膜に含まれるイリジウムの拡散を防止する拡散防止膜118aと、を備え、誘電体膜は、ペロブスカイト構造を有する絶縁性金属酸化物膜を含み、該絶縁性金属酸化物膜は、A(ZrxTi1-x )O3 (ただし、Aは少なくとも1以上のAサイト元素、0<x<0.35)で表される。
【選択図】 図3
Description
図1〜図3は、本発明の第1の実施形態に係る半導体装置の製造方法を模式的に示した断面図である。
図9は、本発明の第2の実施形態に係る半導体装置の製造方法を模式的に示した断面図である。なお、キャパシタ形成工程前の工程については、第1の実施形態で示した図1及び図2の工程と同様である。
102…ゲート絶縁膜 103…多結晶シリコン膜
104…WSix 膜 105…シリコン窒化膜
106…シリコン窒化膜 107…ソース/ドレイン領域
108…シリコン酸化膜 110…TiN膜
111…タングステン膜 112…シリコン窒化膜
114…TiN膜 115…タングステン膜
116…チタン膜 117…第1の導電膜
117a…イリジウム膜 117b…イリジウム酸化物膜
118a…チタン膜(拡散防止膜) 118b…チタン酸化物膜(拡散防止膜)
119…プラチナ膜(第2の導電膜) 120…チタン膜
121…SRO膜(第3の導電膜) 122…PZT膜(誘電体膜)
123…SRO膜 124…プラチナ膜 125…シリコン酸化膜
Claims (5)
- 半導体基板と、
前記半導体基板の上方に設けられ、下部電極と、上部電極と、前記下部電極と前記上部電極との間に設けられた誘電体膜とを含むキャパシタと、
を備え、
前記下部電極は、イリジウムを含む第1の導電膜と、前記誘電体膜と前記第1の導電膜との間に設けられ且つ貴金属膜で形成された第2の導電膜と、前記誘電体膜と前記第2の導電膜との間に設けられ且つペロブスカイト構造を有する導電性金属酸化物膜で形成された第3の導電膜と、前記第1の導電膜と前記第2との導電膜の間に設けられ且つ金属膜及び金属酸化物膜の少なくとも一方を含み且つ前記第1の導電膜に含まれるイリジウムの拡散を防止する拡散防止膜と、を備え、
前記誘電体膜は、ペロブスカイト構造を有する絶縁性金属酸化物膜を含み、該絶縁性金属酸化物膜は、A(ZrxTi1-x )O3 (ただし、Aは少なくとも1以上のAサイト元素、0<x<0.35)で表される
ことを特徴とする半導体装置。 - 前記拡散防止膜に含まれる金属膜は、Ti、V、W、Zr、Co、Mg、Hf、Mo、Mn、Ta、Nb、Pb及びAlの少なくとも一つを含む
ことを特徴とする請求項1に記載の半導体装置。 - 前記拡散防止膜に含まれる金属酸化物膜は、Ti、V、W、Zr、Co、Mg、Hf、Mo、Mn、Ta、Nb、Pb、Al及びRuの少なくとも一つを含む
ことを特徴とする請求項1に記載の半導体装置。 - 前記第1の導電膜は、イリジウム膜及びイリジウム酸化物膜の少なくとも一方を含む
ことを特徴とする請求項1に記載の半導体装置。 - 前記下部電極に接続されたプラグをさらに備え、前記キャパシタは前記プラグ上に形成されている
ことを特徴とする請求項1に記載の半導体装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004337654A JP4220459B2 (ja) | 2004-11-22 | 2004-11-22 | 半導体装置 |
US11/024,422 US7049650B1 (en) | 2004-11-22 | 2004-12-30 | Semiconductor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004337654A JP4220459B2 (ja) | 2004-11-22 | 2004-11-22 | 半導体装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2006147935A true JP2006147935A (ja) | 2006-06-08 |
JP4220459B2 JP4220459B2 (ja) | 2009-02-04 |
Family
ID=36423815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004337654A Expired - Fee Related JP4220459B2 (ja) | 2004-11-22 | 2004-11-22 | 半導体装置 |
Country Status (2)
Country | Link |
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US (1) | US7049650B1 (ja) |
JP (1) | JP4220459B2 (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7208372B2 (en) * | 2005-01-19 | 2007-04-24 | Sharp Laboratories Of America, Inc. | Non-volatile memory resistor cell with nanotip electrode |
KR100718267B1 (ko) * | 2005-03-23 | 2007-05-14 | 삼성전자주식회사 | 강유전체 구조물, 이의 제조 방법, 이를 포함하는 반도체장치 및 그 제조 방법 |
KR20090017758A (ko) * | 2007-08-16 | 2009-02-19 | 삼성전자주식회사 | 강유전체 커패시터의 형성 방법 및 이를 이용한 반도체장치의 제조 방법 |
JP5811728B2 (ja) | 2011-09-16 | 2015-11-11 | 株式会社リコー | 電気−機械変換素子、液滴吐出ヘッド、液滴吐出装置及び画像形成装置 |
JP6273829B2 (ja) | 2013-09-13 | 2018-02-07 | 株式会社リコー | 電気機械変換素子とその製造方法、及び電気機械変換素子を有する液滴吐出ヘッド、液滴吐出ヘッドを有する液滴吐出装置 |
JP7189848B2 (ja) | 2019-08-07 | 2022-12-14 | 株式会社東芝 | 半導体装置およびその製造方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3929513B2 (ja) * | 1995-07-07 | 2007-06-13 | ローム株式会社 | 誘電体キャパシタおよびその製造方法 |
JP3249496B2 (ja) * | 1998-11-10 | 2002-01-21 | 株式会社東芝 | 半導体装置及び半導体装置の製造方法 |
JP2000349254A (ja) * | 1999-06-02 | 2000-12-15 | Sony Corp | 誘電体キャパシタおよびメモリならびにそれらの製造方法 |
JP2001189430A (ja) * | 1999-12-28 | 2001-07-10 | Toshiba Corp | 強誘電体キャパシタ |
US6518609B1 (en) * | 2000-08-31 | 2003-02-11 | University Of Maryland | Niobium or vanadium substituted strontium titanate barrier intermediate a silicon underlayer and a functional metal oxide film |
US6596547B2 (en) * | 2001-12-21 | 2003-07-22 | Texas Instruments Incorporated | Methods of preventing reduction of IrOx during PZT formation by metalorganic chemical vapor deposition or other processing |
US20030143853A1 (en) * | 2002-01-31 | 2003-07-31 | Celii Francis G. | FeRAM capacitor stack etch |
JP4037770B2 (ja) * | 2003-02-10 | 2008-01-23 | 株式会社東芝 | 半導体装置の製造方法 |
US6924519B2 (en) * | 2003-05-02 | 2005-08-02 | Kabushiki Kaisha Toshiba | Semiconductor device with perovskite capacitor |
JP3782401B2 (ja) * | 2003-05-07 | 2006-06-07 | 株式会社東芝 | 半導体装置 |
-
2004
- 2004-11-22 JP JP2004337654A patent/JP4220459B2/ja not_active Expired - Fee Related
- 2004-12-30 US US11/024,422 patent/US7049650B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US7049650B1 (en) | 2006-05-23 |
US20060108624A1 (en) | 2006-05-25 |
JP4220459B2 (ja) | 2009-02-04 |
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