KR20070058111A - 반도체 소자의 다층금속배선 형성방법 - Google Patents
반도체 소자의 다층금속배선 형성방법 Download PDFInfo
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- KR20070058111A KR20070058111A KR1020050116423A KR20050116423A KR20070058111A KR 20070058111 A KR20070058111 A KR 20070058111A KR 1020050116423 A KR1020050116423 A KR 1020050116423A KR 20050116423 A KR20050116423 A KR 20050116423A KR 20070058111 A KR20070058111 A KR 20070058111A
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- 239000002184 metal Substances 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 52
- 239000004065 semiconductor Substances 0.000 title claims abstract description 22
- 150000004767 nitrides Chemical class 0.000 claims abstract description 36
- 238000005530 etching Methods 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 230000004888 barrier function Effects 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 238000007872 degassing Methods 0.000 claims abstract description 7
- 238000010521 absorption reaction Methods 0.000 claims abstract description 4
- 230000002265 prevention Effects 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 18
- 238000009832 plasma treatment Methods 0.000 claims description 14
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 claims description 14
- 238000005137 deposition process Methods 0.000 claims description 11
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 229920000642 polymer Polymers 0.000 claims description 6
- 235000014653 Carica parviflora Nutrition 0.000 claims description 3
- 239000005441 aurora Substances 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 238000005229 chemical vapour deposition Methods 0.000 claims description 2
- 238000004544 sputter deposition Methods 0.000 claims description 2
- 241000243321 Cnidaria Species 0.000 claims 1
- 238000009413 insulation Methods 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 18
- 239000011229 interlayer Substances 0.000 description 11
- 229920002120 photoresistant polymer Polymers 0.000 description 5
- 238000000151 deposition Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000006866 deterioration Effects 0.000 description 3
- 238000010943 off-gassing Methods 0.000 description 3
- 244000132059 Carica parviflora Species 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000009102 absorption Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 150000001722 carbon compounds Chemical class 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 230000009103 reabsorption Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
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- 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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
- H01L21/0226—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process
- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H01L21/02274—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition in the presence of a plasma [PECVD]
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- 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
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- 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
- H01L21/76801—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 dielectrics, e.g. smoothing
- H01L21/76802—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 dielectrics, e.g. smoothing by forming openings in dielectrics
- H01L21/76814—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 dielectrics, e.g. smoothing by forming openings in dielectrics post-treatment or after-treatment, e.g. cleaning or removal of oxides on underlying conductors
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- 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
- H01L21/76801—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 dielectrics, e.g. smoothing
- H01L21/76829—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 dielectrics, e.g. smoothing characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
- H01L21/76831—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 dielectrics, e.g. smoothing characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers in via holes or trenches, e.g. non-conductive sidewall liners
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- Chemical Kinetics & Catalysis (AREA)
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- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
Claims (16)
- 하부 금속배선 및 상기 하부 금속배선 전면에 수분흡수방지막인 라이너 절연막이 형성된 반도체 기판을 마련하는 단계;상기 라이너 절연막 상에 저유전 절연막과 캡핑 절연막을 차례로 형성하는 단계;상기 캡핑 절연막과 저유전 절연막 및 라이너 절연막을 식각하여 하부 금속배선을 노출시키는 비아홀을 형성하는 단계;상기 기판 결과물에 대해 비아홀 형성시 상기 저유전 절연막의 측벽에 흡착된 수분 및 불순물을 제거하는 위해 디개싱 공정을 수행하는 단계;상기 기판 결과물의 전면 상에 질화막을 형성하는 단계;상기 질화막을 식각하여 비아홀 측벽에 형성된 부분을 제외한 나머지 질화막 부분을 제거하는 단계; 및상기 측벽에 질화막이 형성된 비아홀을 통해 하부 금속배선과 콘택하는 상부 금속배선이 형성되도록 결과물 상에 베리어막과 금속막을 차례로 형성하는 단계;를 포함하는 것을 특징으로 하는 반도체 소자의 다층금속배선 형성방법.
- 제 1 항에 있어서, 상기 라이너 절연막은 PECVD 방식에 따라 50∼1000Å 두께로 형성하는 것을 특징으로 하는 반도체 소자의 다층금속배선 형성방법.
- 제 1 항에 있어서, 상기 저유전 절연막은 SiOC 계열의 산화막으로 형성하는 것을 특징으로 하는 반도체 소자의 다층금속배선 형성방법.
- 제 3 항에 있어서, 상기 SiOC 계열의 산화막은 매립 특성 및 평탄화 특성이 있는 Spin-on 계통의 low-k 물질 또는 Trikon 사의 low-k flow-fill 물질 중에서 CVD 방식에 따라 형성하는 것을 특징으로 반도체 소자의 다층 금속배선 형성방법.
- 제 3 항에 있어서, 상기 SiOC 계열의 산화막은 BD(Black Diamond), Coral 및 Aurora 중에서 PECVD 방식에 따라 형성하는 것을 특징으로 반도체 소자의 다층 금속배선 형성방법.
- 제 4 항에 있어서, 상기 Spin-on 계통의 low-k 물질은 SiLK의 카본 폴리머 또는 HOSP, SX950 및 MSQ 계통의 물질인 것을 특징으로 하는 반도체 소자의 다층금속배선 형성방법.
- 제 1 항에 있어서, 상기 디개싱은 스퍼터 장비의 디개스 챔버 내에서 200∼450℃ 온도로 1∼10분 동안 수행하는 것을 특징으로 하는 반도체 소자의 다층금속배선 형성방법.
- 제 1 항에 있어서, 상기 질화막을 형성하는 단계는 플라즈마 처리 공정, 또 는, 증착 공정으로 형성하는 것을 특징으로 하는 반도체 소자의 다층금속배선 형성방법.
- 제 8 항에 있어서, 상기 플라즈마 처리 공정은 NH3 또는 NH3+N2 혼합가스를 사용하면서 온도를 200∼450℃, 압력을 0.1∼30Torr, RF 플라즈마 전력을 100∼5000W로 하는 조건하에서 1∼10분 동안 수행하는 것을 특징으로 하는 반도체 소자의 다층금속배선 형성방법.
- 제 9 항에 있어서, 상기 NH3 가스의 유량은 1∼5000sccm으로 하고, 상기 N2 가스의 유량은 10∼10000sccm으로 하는 것을 특징으로 하는 반도체 소자의 다층금속배선 형성방법.
- 제 9 항에 있어서, 상기 플라즈마 처리 공정을 이용한 질화막은 30∼300Å 두께로 형성하는 것을 특징으로 하는 반도체 소자의 다층금속배선 형성방법.
- 제 8 항에 있어서, 상기 증착 공정은 SiH4와 NH3의 혼합 기체를 이용해서 PECVD 방식으로 수행하는 것을 특징으로 하는 반도체 소자의 다층금속배선 형성방법.
- 제 12 항에 있어서, 상기 PECVD 방식을 이용한 질화막은 50∼500Å 두께로 형성하는 것을 특징으로 하는 반도체 소자의 다층금속배선 형성방법.
- 제 8 항에 있어서, 상기 플라즈마 처리 공정을 통해 형성된 질화막의 식각은 RF sputter 챔버 내에서 Ar 가스를 사용하여 수행하는 것을 특징으로 하는 반도체 소자의 다층금속배선 형성방법.
- 제 8 항에 있어서, 상기 증착 공정을 통해 형성된 질화막의 식각은 RF sputter 챔버 내에서 CF4+N2O 또는 C2H6+O2 혼합가스를 이용하여 1차 식각하는 단계와, Ar 가스를 이용하여 2차 식각하는 단계로 구성되는 것을 특징으로 하는 반도체 소자의 다층금속배선 형성방법.
- 제 14 항 또는 제 15 항에 있어서, 상기 RF Sputter 챔버 내에서 Ar 가스를 사용하여 식각하는 단계는 flow rate는 100∼10000sccm로, 압력은 0.1∼1Torr로, 바이어스 파워는 100∼1000W로 수행하는 것을 특징으로 하는 반도체 소자의 다층금속배선 형성방법.
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KR1020050116423A KR20070058111A (ko) | 2005-12-01 | 2005-12-01 | 반도체 소자의 다층금속배선 형성방법 |
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KR1020050116423A KR20070058111A (ko) | 2005-12-01 | 2005-12-01 | 반도체 소자의 다층금속배선 형성방법 |
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KR1020050116423A KR20070058111A (ko) | 2005-12-01 | 2005-12-01 | 반도체 소자의 다층금속배선 형성방법 |
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2005
- 2005-12-01 KR KR1020050116423A patent/KR20070058111A/ko not_active Application Discontinuation
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