KR100593956B1 - 반도체 소자의 mim 커패시터 형성 방법 - Google Patents
반도체 소자의 mim 커패시터 형성 방법 Download PDFInfo
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- KR100593956B1 KR100593956B1 KR1020020085979A KR20020085979A KR100593956B1 KR 100593956 B1 KR100593956 B1 KR 100593956B1 KR 1020020085979 A KR1020020085979 A KR 1020020085979A KR 20020085979 A KR20020085979 A KR 20020085979A KR 100593956 B1 KR100593956 B1 KR 100593956B1
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- 239000003990 capacitor Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 36
- 239000004065 semiconductor Substances 0.000 title claims abstract description 25
- 239000010410 layer Substances 0.000 claims abstract description 112
- 229910052751 metal Inorganic materials 0.000 claims abstract description 68
- 239000002184 metal Substances 0.000 claims abstract description 68
- 239000011229 interlayer Substances 0.000 claims abstract description 10
- 238000005530 etching Methods 0.000 claims abstract description 8
- 238000000059 patterning Methods 0.000 claims abstract description 7
- 239000003989 dielectric material Substances 0.000 claims abstract description 6
- 238000001312 dry etching Methods 0.000 claims description 9
- 238000000151 deposition Methods 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- 238000005498 polishing Methods 0.000 claims description 4
- 238000001020 plasma etching Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 14
- 238000001465 metallisation Methods 0.000 abstract description 4
- 239000010949 copper Substances 0.000 description 32
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 29
- 229910052802 copper Inorganic materials 0.000 description 29
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 16
- 239000010936 titanium Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 8
- 238000005229 chemical vapour deposition Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 3
- 238000007517 polishing process Methods 0.000 description 3
- 229910020286 SiOxNy Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005137 deposition process Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 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
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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
- H10B12/01—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
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—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
- 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
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
-
- 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
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—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
- 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
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/32115—Planarisation
- H01L21/3212—Planarisation by chemical mechanical polishing [CMP]
-
- 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
- H01L21/76841—Barrier, adhesion or liner layers
- H01L21/76871—Layers specifically deposited to enhance or enable the nucleation of further layers, i.e. seed layers
-
- 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
- H01L28/91—Electrodes with an enlarged surface, e.g. formed by texturisation having vertical extensions made by depositing layers, e.g. by depositing alternating conductive and insulating layers
-
- 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
- H10B12/31—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells having a storage electrode stacked 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)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
- Semiconductor Integrated Circuits (AREA)
Abstract
Description
Claims (5)
- 금속 배선층간 절연층을 형성하고 선택적으로 식각하여 1차 트랜치를 형성하는 단계;상기 1차 트랜치 영역내에 금속을 채워 금속 배선층과 커패시터 하부 전극으로 사용되는 1차 금속 패턴층을 형성하는 단계;상기 1차 금속 패턴층 주위가 오픈되는 마스크 패턴을 형성하고 식각하여 2차 트랜치 영역을 형성하는 단계;전면에 2차 금속층, 유전 물질층, 3차 금속층을 형성하고 평탄화하여 2차 트랜치 영역내에 2차 금속 패턴층,유전체층, 3차 금속 패턴층을 형성하는 단계;전면에 층간 절연막을 형성하고 선택적으로 패터닝하여 비아 홀들을 형성하고 비아 홀내에 비아 플러그를 형성하는 단계;상기 비아 플러그에 콘택되는 상부 금속 배선층을 형성하는 단계를 포함하는 것을 특징으로 하는 반도체 소자의 MIM 커패시터 형성 방법.
- 제 1 항에 있어서,1차 트랜치를 CxFy를 주성분으로 활성화시킨 플라즈마 식각 공정을 형성하는 것을 특징으로 하는 반도체 소자의 MIM 커패시터 형성 방법.
- 제 2 항에 있어서,1차 트랜치 건식각 깊이는 1000~5000Å으로 하고, CxFy는 CF4, CHF3, C2F 6, C4F8, C5F8 등의 'C'와 'F'의 조합으로 이루어진 가스를 이용하고, 여기에 O2, Ar, N2, H2 가스 또는 이들의 조합으로 된 가스를 추가하는 것을 특징으로 하는 반도체 소자의 MIM 커패시터 형성 방법.
- 제 1 항에 있어서,1차 금속 패턴층을 1차 금속층을 증착하고 화학적 기계적 연마(CMP) 공정으로 평탄화하여 형성하는 것을 특징으로 하는 반도체 소자의 MIM 커패시터 형성 방법.
- 제 1 항에 있어서,2차 트랜치 영역은 1차 금속 패턴층을 감싸는 링(ring) 모양의 실린더 구조인 것을 특징으로 하는 반도체 소자의 MIM 커패시터 형성 방법.
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KR1020020085979A KR100593956B1 (ko) | 2002-12-28 | 2002-12-28 | 반도체 소자의 mim 커패시터 형성 방법 |
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KR1020020085979A KR100593956B1 (ko) | 2002-12-28 | 2002-12-28 | 반도체 소자의 mim 커패시터 형성 방법 |
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KR20040059364A KR20040059364A (ko) | 2004-07-05 |
KR100593956B1 true KR100593956B1 (ko) | 2006-07-03 |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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KR100661372B1 (ko) * | 2005-11-03 | 2006-12-27 | 매그나칩 반도체 유한회사 | Mim 캐패시터를 구비한 반도체 소자 및 그 제조방법 |
KR100831268B1 (ko) * | 2006-12-29 | 2008-05-22 | 동부일렉트로닉스 주식회사 | 반도체 소자의 커패시터 및 그 형성방법 |
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