KR20050122740A - 반도체 소자 제조 방법 - Google Patents
반도체 소자 제조 방법 Download PDFInfo
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- KR20050122740A KR20050122740A KR1020040048368A KR20040048368A KR20050122740A KR 20050122740 A KR20050122740 A KR 20050122740A KR 1020040048368 A KR1020040048368 A KR 1020040048368A KR 20040048368 A KR20040048368 A KR 20040048368A KR 20050122740 A KR20050122740 A KR 20050122740A
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- 238000000034 method Methods 0.000 title claims abstract description 51
- 239000004065 semiconductor Substances 0.000 title claims abstract description 24
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 239000012535 impurity Substances 0.000 claims abstract description 90
- 229910052751 metal Inorganic materials 0.000 claims abstract description 88
- 239000002184 metal Substances 0.000 claims abstract description 88
- 230000004888 barrier function Effects 0.000 claims abstract description 40
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 25
- 239000010703 silicon Substances 0.000 claims abstract description 25
- 238000005229 chemical vapour deposition Methods 0.000 claims abstract description 22
- 238000005530 etching Methods 0.000 claims abstract description 21
- 229910021332 silicide Inorganic materials 0.000 claims abstract description 14
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000009792 diffusion process Methods 0.000 claims description 35
- 238000000151 deposition Methods 0.000 claims description 18
- 229910052721 tungsten Inorganic materials 0.000 claims description 18
- 239000010937 tungsten Substances 0.000 claims description 18
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 17
- 239000000758 substrate Substances 0.000 claims description 16
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 14
- 238000005468 ion implantation Methods 0.000 claims description 10
- 229910008484 TiSi Inorganic materials 0.000 claims description 9
- 238000002513 implantation Methods 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 1
- 239000012300 argon atmosphere Substances 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 239000012299 nitrogen atmosphere Substances 0.000 claims 1
- 230000003071 parasitic effect Effects 0.000 abstract description 4
- 239000010408 film Substances 0.000 description 134
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 16
- 229920002120 photoresistant polymer Polymers 0.000 description 13
- 230000008021 deposition Effects 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 7
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 5
- 229920005591 polysilicon Polymers 0.000 description 5
- 150000004767 nitrides Chemical class 0.000 description 4
- 238000005240 physical vapour deposition Methods 0.000 description 4
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 3
- -1 that is Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000005380 borophosphosilicate glass Substances 0.000 description 2
- 239000005388 borosilicate glass Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000005360 phosphosilicate glass Substances 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 239000010409 thin film Substances 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
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- H10B12/00—Dynamic random access memory [DRAM] devices
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- 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
- H01L21/76877—Filling of holes, grooves or trenches, e.g. vias, with conductive material
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- 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
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
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- 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
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
- H01L21/283—Deposition of conductive or insulating materials for electrodes conducting electric current
- H01L21/285—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation
- H01L21/28506—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers
- H01L21/28512—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table
- H01L21/28518—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table the conductive layers comprising silicides
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- 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
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- 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
- H01L21/76843—Barrier, adhesion or liner layers formed in openings in a dielectric
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- 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
- H01L21/76843—Barrier, adhesion or liner layers formed in openings in a dielectric
- H01L21/76846—Layer combinations
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- 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
- H01L21/76853—Barrier, adhesion or liner layers characterized by particular after-treatment steps
- H01L21/76861—Post-treatment or after-treatment not introducing additional chemical elements into the layer
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- H10B12/00—Dynamic random access memory [DRAM] devices
- H10B12/30—DRAM devices comprising one-transistor - one-capacitor [1T-1C] memory cells
- H10B12/48—Data lines or contacts therefor
- H10B12/485—Bit line contacts
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/4966—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a composite material, e.g. organic material, TiN, MoSi2
- H01L29/4975—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a composite material, e.g. organic material, TiN, MoSi2 being a silicide layer, e.g. TiSi2
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- 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
- H10B12/48—Data lines or contacts therefor
- H10B12/482—Bit lines
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- Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
Abstract
Description
Claims (18)
- 실리콘을 포함하는 N형의 도전영역에 N형의 불순물을 도핑하여 고농도의 N형 불순물 영역을 형성하는 단계;상기 고농도의 N형 불순물 영역 상에 화학기상증착 방식을 이용하여 배리어용 제1금속막을 증착하며, 이 때 상기 고농도의 N형 불순물 영역의 실리콘과 상기 제1금속막의 금속을 반응시켜 상기 고농도의 N형 불순물 영역과 상기 제1금속막 사이의 계면에 금속 실리사이드를 형성하는 단계;상기 제1금속막 상에 전도막을 형성하는 단계; 및상기 전도막과 상기 제1금속막을 선택적으로 식각하여 도전패턴을 형성하는 단계를 포함하는 반도체 소자 제조 방법.
- 기판에 N형의 불순물 확산영역을 형성하는 단계;상기 N형의 불순물 확산영역에 추가의 N형의 불순물을 도핑하여 고농도의 N형 불순물 영역을 형성하는 단계;상기 고농도의 N형 불순물 영역 상에 화학기상증착 방식을 이용하여 배리어용 제1금속막을 증착하며, 이 때 상기 고농도의 N형 불순물 영역의 실리콘과 상기 제1금속막의 금속을 반응시켜 상기 고농도의 N형 불순물 영역과 상기 제1금속막 사이의 계면에 금속 실리사이드를 형성하는 단계;상기 제1금속막 상에 전도막을 형성하는 단계; 및상기 전도막과 상기 제1금속막을 선택적으로 식각하여 도전패턴을 형성하는 단계를 포함하는 반도체 소자 제조 방법.
- 실리콘을 포함하는 N형의 도전영역을 갖는 하부 구조 상에 절연막을 형성하는 단계;상기 절연막을 선택적으로 식각하여 상기 N형의 도전영역을 노출시키는 오픈부를 형성하는 단계;상기 오픈부를 통해 노출된 상기 N형의 도전영역에 N형의 불순물을 도핑하여 고농도의 N형 불순물 영역을 형성하는 단계;상기 오픈부가 형성된 프로파일을 따라 화학기상증착 방식을 이용하여 배리어용 제1금속막을 증착하며, 이 때 상기 고농도의 N형 불순물 영역의 실리콘과 상기 제1금속막의 금속을 반응시켜 상기 고농도의 N형 불순물 영역과 상기 제1금속막 사이의 계면에 금속 실리사이드를 형성하는 단계;상기 제1금속막 상에 전도막을 형성하는 단계; 및상기 전도막과 상기 제1금속막을 선택적으로 식각하여 도전패턴을 형성하는 단계를 포함하는 반도체 소자 제조 방법.
- 기판에 N형의 불순물 확산영역을 형성하는 단계;상기 기판 상에 절연막을 형성하는 단계;상기 절연막을 선택적으로 식각하여 상기 N형의 불순물 확산영역을 노출시키는 오픈부를 형성하는 단계;상기 오픈부를 통해 노출된 상기 N형의 불순물 확산영역에 추가의 N형의 불순물을 도핑하여 고농도의 N형 불순물 영역을 형성하는 단계;상기 오픈부가 형성된 프로파일을 따라 화학기상증착 방식을 이용하여 배리어용 제1금속막을 증착하며, 이 때 상기 고농도의 N형 불순물 영역의 실리콘과 상기 제1금속막의 금속을 반응시켜 상기 고농도의 N형 불순물 영역과 상기 제1금속막 사이의 계면에 금속 실리사이드를 형성하는 단계;상기 제1금속막 상에 전도막을 형성하는 단계; 및상기 전도막과 상기 제1금속막을 선택적으로 식각하여 도전패턴을 형성하는 단계를 포함하는 반도체 소자 제조 방법.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,상기 고농도의 N형의 불순물 영역을 형성하는 단계에서,아세닉(As)을 이온주입한 다음, 열처리하여 상기 고농도의 N형의 불순물 영역 형성하는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제 5 항에 있어서,상기 고농도의 N형의 불순물 영역을 형성하는 단계에서,상기 아세닉을 2E15/㎠ 내지 5E15/㎠의 농도로 하고 이온주입 에너지를 7KeV 내지 12KeV를 이용하는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제 5 항에 있어서,상기 열처리시, 750℃ 내지 850℃의 온도에서 20초 내지 40초 동안 실시하는 급속열처리를 이용하는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제 7 항에 있어서,상기 열처리를 질소 또는 아르곤 분위기에서 실시하는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,상기 제1금속막을 적어도 690℃의 온도에서 증착하는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,상기 제1금속막을 5Å 내지 15Å의 두께로 증착하는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,상기 제1금속막을 증착하는 단계 후, 상기 제1금속막 상에 배리어용 제2금속막을 증착한 다음, 열처리하는 단계를 더 포함하는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제 11 항에 있어서,상기 제2금속막을 10Å 내지 20Å의 두께로 증착하는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제 11 항에 있어서,상기 열처리시, 750℃ 내지 850℃의 온도에서 20초 내지 40초 동안 실시하는 급속열처리를 이용하는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제 11 항에 있어서,상기 제1금속막은 Ti막이고, 상기 제2금속막은 TiN막이며, 상기 금속 실리사이드는 TiSi2인 것을 특징으로 하는 반도체 소자 제조 방법.
- 제 2 항 또는 제 4 항에 있어서,상기 N형의 불순물 확산영역을 형성하는 단계에서,아세닉을 이온주입한 다음, 열처리하여 상기 N형의 불순물 확산영역 형성하는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제 15 항에 있어서,상기 N형의 불순물 확산영역을 형성하는 단계에서,상기 아세닉을 2E15/㎠ 내지 5E15/㎠의 농도로 하고 이온주입 에너지를 12KeV 내지 18KeV를 이용하는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,상기 전도막은 텅스텐막을 포함하는 것을 특징으로 하는 반도체 소자 제조 방법.
- 제 17 항에 있어서,상기 전도막을 500Å 내지 800Å의 두께로 형성하는 것을 특징으로 하는 반도체 소자 제조 방법.
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US8803245B2 (en) * | 2008-06-30 | 2014-08-12 | Mcafee, Inc. | Method of forming stacked trench contacts and structures formed thereby |
US7968457B2 (en) * | 2008-08-26 | 2011-06-28 | Intel Corporation | Sandwiched metal structure silicidation for enhanced contact |
US8614106B2 (en) | 2011-11-18 | 2013-12-24 | International Business Machines Corporation | Liner-free tungsten contact |
US9530736B2 (en) * | 2014-02-14 | 2016-12-27 | Taiwan Semiconductor Manufacturing Company Limited | Semiconductor device and formation thereof |
US9165838B2 (en) * | 2014-02-26 | 2015-10-20 | Taiwan Semiconductor Manufacturing Company Limited | Methods of forming low resistance contacts |
US9343357B2 (en) * | 2014-02-28 | 2016-05-17 | Qualcomm Incorporated | Selective conductive barrier layer formation |
CN104538439A (zh) * | 2015-01-19 | 2015-04-22 | 北京大学 | 一种耐高温欧姆接触电极结构及其加工方法 |
US9972682B2 (en) | 2016-01-22 | 2018-05-15 | International Business Machines Corporation | Low resistance source drain contact formation |
US10249502B2 (en) | 2016-01-22 | 2019-04-02 | International Business Machines Corporation | Low resistance source drain contact formation with trench metastable alloys and laser annealing |
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US6440828B1 (en) * | 1996-05-30 | 2002-08-27 | Nec Corporation | Process of fabricating semiconductor device having low-resistive contact without high temperature heat treatment |
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US6271132B1 (en) * | 1999-05-03 | 2001-08-07 | Advanced Micro Devices, Inc. | Self-aligned source and drain extensions fabricated in a damascene contact and gate process |
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US20050239287A1 (en) * | 2003-10-03 | 2005-10-27 | Mei-Yun Wang | Silicide formation using a metal-organic chemical vapor deposited capping layer |
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