JP6943922B2 - 半導体メモリ素子 - Google Patents
半導体メモリ素子 Download PDFInfo
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- JP6943922B2 JP6943922B2 JP2019123049A JP2019123049A JP6943922B2 JP 6943922 B2 JP6943922 B2 JP 6943922B2 JP 2019123049 A JP2019123049 A JP 2019123049A JP 2019123049 A JP2019123049 A JP 2019123049A JP 6943922 B2 JP6943922 B2 JP 6943922B2
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- 239000004065 semiconductor Substances 0.000 title claims description 58
- 239000012528 membrane Substances 0.000 claims description 43
- 229910003697 SiBN Inorganic materials 0.000 claims description 7
- 101000939517 Homo sapiens Ubiquitin carboxyl-terminal hydrolase 2 Proteins 0.000 description 31
- 102100029643 Ubiquitin carboxyl-terminal hydrolase 2 Human genes 0.000 description 31
- 238000005530 etching Methods 0.000 description 29
- 239000000758 substrate Substances 0.000 description 26
- 101000607909 Homo sapiens Ubiquitin carboxyl-terminal hydrolase 1 Proteins 0.000 description 23
- 102100039865 Ubiquitin carboxyl-terminal hydrolase 1 Human genes 0.000 description 23
- 239000011229 interlayer Substances 0.000 description 23
- 229910052751 metal Inorganic materials 0.000 description 21
- 239000002184 metal Substances 0.000 description 21
- 230000000149 penetrating effect Effects 0.000 description 21
- 239000000126 substance Substances 0.000 description 16
- 238000004519 manufacturing process Methods 0.000 description 15
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 12
- 229910052721 tungsten Inorganic materials 0.000 description 12
- 239000010937 tungsten Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- -1 tungsten nitride Chemical class 0.000 description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 8
- 238000005229 chemical vapour deposition Methods 0.000 description 8
- 238000001312 dry etching Methods 0.000 description 8
- 150000004767 nitrides Chemical class 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- 229920002120 photoresistant polymer Polymers 0.000 description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 6
- 238000000231 atomic layer deposition Methods 0.000 description 6
- 229910052719 titanium Inorganic materials 0.000 description 6
- 239000010936 titanium Substances 0.000 description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 6
- 229910052814 silicon oxide Inorganic materials 0.000 description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 4
- UQZIWOQVLUASCR-UHFFFAOYSA-N alumane;titanium Chemical compound [AlH3].[Ti] UQZIWOQVLUASCR-UHFFFAOYSA-N 0.000 description 4
- 229910017052 cobalt Inorganic materials 0.000 description 4
- 239000010941 cobalt Substances 0.000 description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 4
- 229910052741 iridium Inorganic materials 0.000 description 4
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 4
- 229910052750 molybdenum Inorganic materials 0.000 description 4
- 239000011733 molybdenum Substances 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- 229910052707 ruthenium Inorganic materials 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 238000001039 wet etching Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 229910052732 germanium Inorganic materials 0.000 description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 239000003870 refractory metal Substances 0.000 description 3
- 229910021332 silicide Inorganic materials 0.000 description 3
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 229910052715 tantalum Inorganic materials 0.000 description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 3
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910004121 SrRuO Inorganic materials 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 2
- UGACIEPFGXRWCH-UHFFFAOYSA-N [Si].[Ti] Chemical compound [Si].[Ti] UGACIEPFGXRWCH-UHFFFAOYSA-N 0.000 description 2
- 229910003481 amorphous carbon Inorganic materials 0.000 description 2
- IVHJCRXBQPGLOV-UHFFFAOYSA-N azanylidynetungsten Chemical compound [W]#N IVHJCRXBQPGLOV-UHFFFAOYSA-N 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000005121 nitriding Methods 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 2
- 229910021342 tungsten silicide Inorganic materials 0.000 description 2
- 238000004380 ashing Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/30—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/01—Manufacture or treatment
- H10B12/02—Manufacture or treatment for one transistor one-capacitor [1T-1C] memory cells
- H10B12/03—Making the capacitor or connections thereto
- H10B12/038—Making the capacitor or connections thereto the capacitor being in a trench in the substrate
-
- 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
- H01L28/75—Electrodes comprising two or more layers, e.g. comprising a barrier layer and a metal layer
-
- 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
- H01L28/82—Electrodes with an enlarged surface, e.g. formed by texturisation
- H01L28/90—Electrodes with an enlarged surface, e.g. formed by texturisation having vertical extensions
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/01—Manufacture or treatment
- H10B12/02—Manufacture or treatment for one transistor one-capacitor [1T-1C] memory cells
- H10B12/03—Making the capacitor or connections thereto
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/01—Manufacture or treatment
- H10B12/02—Manufacture or treatment for one transistor one-capacitor [1T-1C] memory cells
- H10B12/03—Making the capacitor or connections thereto
- H10B12/033—Making the capacitor or connections thereto the capacitor extending over the transistor
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10B—ELECTRONIC MEMORY DEVICES
- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/30—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells
- H10B12/37—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells the capacitor being at least partially in a trench in the substrate
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Semiconductor Memories (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- General Engineering & Computer Science (AREA)
Description
110 コンタクトプラグ
112 層間絶縁膜
120 下部電極
140 誘電膜
150 上部電極
LSP 下部支持膜
TH 貫通ホール
USP 上部支持膜
Claims (18)
- 内部空間を包囲する下部電極と、
前記下部電極の上面の上に配置される上部支持膜と、
前記上部支持膜の上に配置され、前記上部支持膜を貫通する第2領域及び前記第2領域から前記下部電極に延びる第1領域内を満たす上部電極と、を含み、
前記下部電極の各々は、
前記第2領域と垂直に重畳する第1部分と、
前記上部支持膜によってカバーされる第2部分と、を含み、
前記第1部分の上面は、前記上部支持膜によって露出され、
前記第2部分の上面は、前記上部支持膜と接触し、
前記上部支持膜は、前記下部電極の各々に囲まれた内部空間内に配置され、前記下部電極の内側壁と接触し、且つ前記下部電極の底面と離隔されている、半導体メモリ素子。 - 前記第1部分の前記上面は、前記第2部分の前記上面より低いレベルに位置する請求項1に記載の半導体メモリ素子。
- 前記上部支持膜は、前記第2部分の上部の外側壁の上に配置される請求項1又は2に記載の半導体メモリ素子。
- 前記内部空間内に配置された前記上部支持膜の下面は、前記第2部分の前記上部の前記外側壁の上に配置された前記上部支持膜の下面より低いレベルに位置する請求項3に記載の半導体メモリ素子。
- 前記下部電極の外側壁の上に配置され、前記上部支持膜の下に位置する下部支持膜をさらに含む請求項1ないし4のうち何れか一項に記載の半導体メモリ素子。
- 前記第1部分の外側壁の上に配置された前記下部支持膜の一部分は、前記上部電極によって貫通され、
前記第2部分の外側壁の上に配置される前記下部支持膜の一部分は、前記上部電極によって貫通されない請求項5に記載の半導体メモリ素子。 - 前記上部支持膜は、SiOC、SiBN、SiCN、doped SiN、及びSiの中で少なくとも1つを含む請求項1ないし6のうち何れか一項に記載の半導体メモリ素子。
- 前記第2部分の側壁は、前記上部支持膜と接触する請求項1ないし7のうち何れか一項に記載の半導体メモリ素子。
- 前記上部支持膜と接触する前記第2部分の内側壁の接触面積は、前記上部支持膜と接触する前記第2部分の外側壁の接触面積より大きい請求項8に記載の半導体メモリ素子。
- 前記下部電極の各々は、断面視で、U字形状である請求項1ないし9のうち何れか一項に記載の半導体メモリ素子。
- 前記上部電極と前記下部電極との間及び前記上部電極と前記上部支持膜との間に介在する誘電膜をさらに含み、
前記誘電膜は、前記第1部分の前記上面と接触し、
前記誘電膜は、前記第2部分の前記上面と離隔される請求項1ないし10のうち何れか一項に記載の半導体メモリ素子。 - 前記内部空間内に配置された前記上部支持膜の下面と前記下部電極の各々の底面との間に配置された前記内部空間は、空気で満たされる請求項1ないし11のうち何れか一項に記載の半導体メモリ素子。
- 前記第2部分は、前記第1領域と垂直には重畳していない請求項1ないし12のうち何れか一項に記載の半導体メモリ素子。
- 内部空間を包囲する下部電極と、
前記下部電極の上面の上に配置される上部支持膜と、
前記上部支持膜の上に配置され、前記上部支持膜を貫通する第2領域及び前記第2領域から前記下部電極に延びる第1領域内を満たす上部電極と、を含み、
前記下部電極の各々は、
前記第2領域と垂直に重畳する第1部分と、
前記上部支持膜によってカバーされる第2部分と、を含み、
前記第1部分は、前記上部支持膜と垂直には重畳せず、前記第2部分は、前記上部支持膜と垂直に重畳し、
前記上部支持膜は、前記下部電極の各々に囲まれた内部空間内に配置され、前記下部電極の内側壁と接触し、且つ前記下部電極の底面と離隔されている、半導体メモリ素子。 - 前記第1部分の上面は、前記第2部分の上面より低いレベルに位置する請求項14に記載の半導体メモリ素子。
- 前記上部支持膜は、前記第2部分の上部の外側壁の上に配置される請求項14に記載の半導体メモリ素子。
- 前記内部空間内に配置された前記上部支持膜の下面は、前記第2部分の前記外側壁の上に配置された前記上部支持膜の下面より低いレベルに位置する請求項16に記載の半導体メモリ素子。
- 内部空間を包囲する下部電極と、
前記下部電極の上面の上に配置される上部支持膜と、
前記上部支持膜の上に配置され、前記上部支持膜を貫通する第2領域及び前記第2領域から前記下部電極に延びる第1領域内を満たす上部電極と、を含み、
前記下部電極の各々は、
前記第2領域と垂直に重畳する第1部分と、
前記上部支持膜によってカバーされる第2部分と、を含み、
前記第1部分の外側壁は、前記上部支持膜と離隔され、前記第2部分の外側壁は、前記上部支持膜と接触し、
前記上部支持膜は、前記下部電極の各々に囲まれた内部空間内に配置され、前記下部電極の内側壁と接触し、且つ前記下部電極の底面と離隔されている、半導体メモリ素子。
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KR1020180076426A KR102557019B1 (ko) | 2018-07-02 | 2018-07-02 | 반도체 메모리 소자 |
KR10-2018-0076426 | 2018-07-02 |
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JP2020010031A JP2020010031A (ja) | 2020-01-16 |
JP6943922B2 true JP6943922B2 (ja) | 2021-10-06 |
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US (1) | US10998318B2 (ja) |
JP (1) | JP6943922B2 (ja) |
KR (2) | KR102557019B1 (ja) |
CN (2) | CN110676255B (ja) |
SG (1) | SG10201905122TA (ja) |
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KR102664275B1 (ko) * | 2019-03-29 | 2024-05-09 | 에스케이하이닉스 주식회사 | 반도체장치 및 그 제조 방법 |
TWI710110B (zh) * | 2019-11-19 | 2020-11-11 | 華邦電子股份有限公司 | 電容器及其製造方法 |
EP3975233B1 (en) * | 2020-08-13 | 2024-06-12 | Changxin Memory Technologies, Inc. | Capacitor structure and manufacturing method therefor, and memory |
CN114078773A (zh) * | 2020-08-13 | 2022-02-22 | 长鑫存储技术有限公司 | 电容器结构及其制作方法、存储器 |
CN115020408B (zh) * | 2021-03-05 | 2024-09-24 | 长鑫存储技术有限公司 | 半导体结构及其形成方法 |
US20220285481A1 (en) * | 2021-03-05 | 2022-09-08 | Changxin Memory Technologies, Inc. | Semiconductor structure and forming method thereof |
CN116490060A (zh) * | 2022-01-13 | 2023-07-25 | 长鑫存储技术有限公司 | 半导体结构及半导体结构的制造方法 |
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JPH05275649A (ja) | 1992-01-31 | 1993-10-22 | Sharp Corp | 半導体記憶装置 |
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KR101893193B1 (ko) | 2012-03-28 | 2018-08-29 | 삼성전자주식회사 | 반도체 소자 |
KR101934037B1 (ko) * | 2012-11-21 | 2018-12-31 | 삼성전자주식회사 | 서포터를 갖는 반도체 소자 및 그 형성 방법 |
KR102295966B1 (ko) * | 2014-08-27 | 2021-09-01 | 삼성전자주식회사 | 나노와이어를 이용한 반도체 소자 형성 방법 |
KR102367394B1 (ko) * | 2015-06-15 | 2022-02-25 | 삼성전자주식회사 | 캐패시터 구조체 및 이를 포함하는 반도체 소자 |
KR102279720B1 (ko) * | 2015-06-24 | 2021-07-22 | 삼성전자주식회사 | 반도체 장치 및 그 제조 방법 |
KR20170011218A (ko) * | 2015-07-22 | 2017-02-02 | 삼성전자주식회사 | 커패시터 구조물 및 이의 형성 방법, 및 상기 커패시터 구조물을 포함하는 반도체 장치 |
KR102414612B1 (ko) * | 2015-10-13 | 2022-07-01 | 삼성전자주식회사 | 반도체 소자 및 그 제조 방법 |
KR20170069347A (ko) * | 2015-12-10 | 2017-06-21 | 삼성전자주식회사 | 반도체 장치의 제조 방법 |
KR102394250B1 (ko) * | 2016-01-06 | 2022-05-03 | 삼성전자주식회사 | 반도체 장치 및 이의 제조 방법 |
KR102460564B1 (ko) * | 2016-02-17 | 2022-11-01 | 삼성전자주식회사 | 반도체 소자 |
KR102406719B1 (ko) * | 2016-12-09 | 2022-06-07 | 삼성전자주식회사 | 반도체 장치 및 그 제조 방법 |
KR102693516B1 (ko) * | 2016-12-14 | 2024-08-08 | 삼성전자주식회사 | 반도체 소자 |
CN207517691U (zh) * | 2017-12-07 | 2018-06-19 | 睿力集成电路有限公司 | 电容器阵列结构 |
CN110289258B (zh) * | 2018-03-19 | 2021-12-21 | 联华电子股份有限公司 | 半导体结构 |
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CN110676255B (zh) | 2024-01-19 |
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US10998318B2 (en) | 2021-05-04 |
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