JP5061902B2 - 強誘電体メモリ装置およびその製造方法、半導体装置の製造方法 - Google Patents
強誘電体メモリ装置およびその製造方法、半導体装置の製造方法 Download PDFInfo
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- 229910052760 oxygen Inorganic materials 0.000 claims description 48
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 45
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- 239000003990 capacitor Substances 0.000 claims description 43
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- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 18
- 229910052710 silicon Inorganic materials 0.000 claims description 17
- 229910052718 tin Inorganic materials 0.000 claims description 17
- 229910052721 tungsten Inorganic materials 0.000 claims description 14
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 10
- 238000005121 nitriding Methods 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 229910004121 SrRuO Inorganic materials 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
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- 125000004433 nitrogen atom Chemical group N* 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 3
- VRIVJOXICYMTAG-IYEMJOQQSA-L iron(ii) gluconate Chemical compound [Fe+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O VRIVJOXICYMTAG-IYEMJOQQSA-L 0.000 claims description 3
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- 229910052697 platinum Inorganic materials 0.000 claims description 2
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- 229910052451 lead zirconate titanate Inorganic materials 0.000 claims 1
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 16
- 239000013078 crystal Substances 0.000 description 16
- 239000010703 silicon Substances 0.000 description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 15
- 229910052814 silicon oxide Inorganic materials 0.000 description 15
- 238000004544 sputter deposition Methods 0.000 description 15
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 14
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 13
- 239000010937 tungsten Substances 0.000 description 13
- 238000009832 plasma treatment Methods 0.000 description 11
- 229910021332 silicide Inorganic materials 0.000 description 11
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 11
- 238000012545 processing Methods 0.000 description 9
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 8
- 229910052751 metal Inorganic materials 0.000 description 8
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- 229910021529 ammonia Inorganic materials 0.000 description 7
- 125000004429 atom Chemical group 0.000 description 7
- 230000015654 memory Effects 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 238000002955 isolation Methods 0.000 description 5
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- 229910052726 zirconium Inorganic materials 0.000 description 5
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000002052 molecular layer Substances 0.000 description 4
- -1 oxygen radicals Chemical class 0.000 description 4
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- 239000003963 antioxidant agent Substances 0.000 description 2
- 230000003078 antioxidant effect Effects 0.000 description 2
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [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 description 2
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 229910000457 iridium oxide Inorganic materials 0.000 description 2
- 229910052745 lead Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 150000003254 radicals Chemical class 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- 229910017109 AlON Inorganic materials 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910013641 LiNbO 3 Inorganic materials 0.000 description 1
- 229910019897 RuOx Inorganic materials 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 229910004356 Ti Raw Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
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- 230000006735 deficit Effects 0.000 description 1
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- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005621 ferroelectricity Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000002831 nitrogen free-radicals Chemical class 0.000 description 1
- 238000005546 reactive sputtering Methods 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
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Classifications
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- 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
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/10—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration
- H01L27/105—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including a plurality of individual components in a repetitive configuration including field-effect components
-
- 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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/71—Manufacture of specific parts of devices defined in group H01L21/70
- H01L21/768—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
- H01L21/76838—Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
- H01L21/76895—Local interconnects; Local pads, as exemplified by patent document EP0896365
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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)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Semiconductor Memories (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Description
41A 素子領域
41I 素子分離領域
41a,41b,41c,41d LDD領域
41e,41f,41g,41h ソース・ドレイン領域
42A,42B ゲート絶縁膜
43A、43B ゲート電極
44A,44B シリサイド層
45 SiONカバー膜
46,48,58 層間絶縁膜
46A,46B,46C コンタクトホール
47A,47B,47C コンタクトプラグ
47a,47b,47c 密着層
47 SiON酸素バリア膜
51A,51C Ti密着層
52A,53A TiAlN酸素バリア膜
53A,53C 下部電極
54A,54C PZT膜
55A,55C 上部電極
56A,56C 水素バリア膜
57 Al2O3 水素バリア膜
70A〜70C 配線パターン
61A,61C 酸化アルミニウム膜
62A,62C 窒化膜
63A,63C Ti配向膜
Claims (10)
- 半導体基板と、
前記半導体基板上に形成された、第1および第2の拡散領域を含む電界効果トランジスタと、
前記半導体基板上に、前記電界効果トランジスタを覆うように形成された層間絶縁膜と、
前記層間絶縁膜中に形成され、前記第1の拡散領域とコンタクトする導電性プラグと、
前記層間絶縁膜上に、前記導電性プラグにコンタクトして形成される強誘電体キャパシタとよりなる強誘電体メモリ装置であって、
前記強誘電体キャパシタは強誘電体膜と、強誘電体膜を上下に挟持する上部電極および下部電極よりなり、前記下部電極は前記導電性プラグに電気的に接続されており、
前記導電性プラグと前記下部電極との間にはAlと酸素を含む層が介在し、
前記Alと酸素を含む層の表面には窒素を含む層が形成され、
前記窒素を含む層の表面には、自己配向性を有する物質よりなる自己配向層が直接形成され、前記自己配向層上に前記下部電極が形成されることを特徴とする強誘電体メモリ装置。 - 前記Alと酸素を含む層は、少なくとも1層の酸素原子層を表面に有するTiAlN膜であることを特徴とする請求項1記載の強誘電体メモリ装置。
- 前記窒素を含む層は、少なくとも1層の窒素原子層を含むことを特徴とする請求項1記載の強誘電体メモリ装置。
- 前記自己配向層は、Ti,Ir,Pt,PZT,SrRuO3,Ru,TiN,TiAlN,Al,Cu,IrOxよりなる群から選ばれる一または複数の物質よりなることを特徴とする請求項1記載の強誘電体メモリ装置。
- 前記導電性プラグは、Si,Ti,TiN,TiAlN,W,Al,Cu,Ru、SrRuO3よりなる群から選ばれる一または複数の物質よりなることをと特徴とする請求項1記載の強誘電体メモリ装置。
- 強誘電体メモリ装置の製造方法であって、
トランジスタが形成された半導体基板上に、前記トランジスタを覆うように層間絶縁膜を形成する工程と、
前記層間絶縁膜中に、前記トランジスタの拡散領域にコンタクトする導電性のコンタクトプラグを形成する工程と、
前記コンタクトプラグ上に、下部電極と強誘電体膜と上部電極を順次積層して強誘電体キャパシタを形成する工程と、を含み、
さらに前記コンタクトプラグを形成する工程の後、前記下部電極を形成する工程の前に、前記層間絶縁膜および前記コンタクトプラグの表面にAlと酸素を含む層を形成する工程と、前記Alと酸素を含む層の表面を窒化処理して窒素を含む層を形成する工程と、前記窒素を含む層の上に自己配向性を有する膜を直接形成する工程を含むことを特徴とする強誘電体メモリ装置の製造方法。 - 前記酸素を含む層を形成する工程は、前記層間絶縁膜および前記コンタクトプラグの表面に、TiAlN膜を堆積する工程と、前記TiAlN膜に酸素ラジカルを作用させる工程を含むことを特徴とする請求項6記載の強誘電体メモリ装置の製造方法。
- 前記窒素を含む層を形成する工程は、前記酸素を含む層の表面にNHラジカルを作用させることを含むことを特徴とする請求項6記載の強誘電体メモリ装置の製造方法。
- 前記自己配向性を有する膜を形成する工程は、300℃以下の温度で実行されることを特徴とする請求項6記載の強誘電体メモリ装置の製造方法。
- 強誘電体膜を有する半導体装置の製造方法であって、
トランジスタが形成された半導体基板上に、前記トランジスタを覆うように層間絶縁膜を形成する工程と、
前記層間絶縁膜中に、前記トランジスタの拡散領域にコンタクトする導電性のコンタクトプラグを形成する工程と、
前記コンタクトプラグ上に、強誘電体膜を形成する工程と、を含み、
さらに前記コンタクトプラグを形成する工程の後、前記強誘電体膜を形成する工程の前に、前記層間絶縁膜および前記コンタクトプラグの表面にAlと酸素を含む層を形成する工程と、前記Alと酸素を含む層の表面を窒化処理して窒素を含む層を形成する工程と、前記窒素を含む層の上に自己配向性を有する膜を直接形成する工程を含むことを特徴とする半導体装置の製造方法。
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JP4617227B2 (ja) * | 2005-09-01 | 2011-01-19 | 富士通セミコンダクター株式会社 | 強誘電体メモリ装置およびその製造方法 |
JP4802780B2 (ja) * | 2006-03-14 | 2011-10-26 | セイコーエプソン株式会社 | 強誘電体メモリ装置、強誘電体メモリ装置の製造方法 |
JP6287278B2 (ja) * | 2014-02-03 | 2018-03-07 | 富士通セミコンダクター株式会社 | 半導体装置及びその製造方法 |
US11502103B2 (en) * | 2018-08-28 | 2022-11-15 | Intel Corporation | Memory cell with a ferroelectric capacitor integrated with a transtor gate |
US11980037B2 (en) | 2020-06-19 | 2024-05-07 | Intel Corporation | Memory cells with ferroelectric capacitors separate from transistor gate stacks |
CN117241589A (zh) * | 2022-06-02 | 2023-12-15 | 华为技术有限公司 | 铁电存储器及其制备方法、电子设备 |
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2005
- 2005-09-01 WO PCT/JP2005/016042 patent/WO2007029289A1/ja active Application Filing
- 2005-09-01 CN CN2005800514339A patent/CN101248523B/zh not_active Expired - Fee Related
- 2005-09-01 KR KR1020087004810A patent/KR100964834B1/ko not_active IP Right Cessation
- 2005-09-01 JP JP2007534193A patent/JP5061902B2/ja not_active Expired - Fee Related
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JP2005268801A (ja) * | 2004-03-18 | 2005-09-29 | Texas Instr Inc <Ti> | 強誘電体キャパシタ水素障壁及びその製造方法 |
Also Published As
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CN101248523A (zh) | 2008-08-20 |
WO2007029289A1 (ja) | 2007-03-15 |
US7884404B2 (en) | 2011-02-08 |
KR20080030689A (ko) | 2008-04-04 |
JPWO2007029289A1 (ja) | 2009-03-26 |
CN101248523B (zh) | 2010-06-16 |
US20080142915A1 (en) | 2008-06-19 |
KR100964834B1 (ko) | 2010-06-24 |
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