JP2019145825A - 化学的に改変されたスペーサ表面を有する集積回路 - Google Patents
化学的に改変されたスペーサ表面を有する集積回路 Download PDFInfo
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- 125000006850 spacer group Chemical group 0.000 title claims abstract description 101
- 239000003989 dielectric material Substances 0.000 claims abstract description 98
- 238000000034 method Methods 0.000 claims abstract description 45
- 239000004065 semiconductor Substances 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 13
- 230000007704 transition Effects 0.000 claims abstract description 13
- 238000005530 etching Methods 0.000 claims abstract description 12
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 18
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052799 carbon Inorganic materials 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 229910052710 silicon Inorganic materials 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 9
- 238000005468 ion implantation Methods 0.000 claims description 9
- 239000010703 silicon Substances 0.000 claims description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 5
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 5
- 239000004215 Carbon black (E152) Substances 0.000 claims description 4
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 4
- 229930195733 hydrocarbon Natural products 0.000 claims description 4
- 150000002430 hydrocarbons Chemical class 0.000 claims description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims description 3
- 150000004706 metal oxides Chemical class 0.000 claims description 3
- 238000001020 plasma etching Methods 0.000 claims 4
- 239000000463 material Substances 0.000 description 9
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 8
- 239000007943 implant Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 229910021332 silicide Inorganic materials 0.000 description 4
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 4
- 239000000203 mixture Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005234 chemical deposition Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- H—ELECTRICITY
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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
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/8238—Complementary field-effect transistors, e.g. CMOS
- H01L21/823864—Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the gate sidewall spacers, e.g. double spacers, particular spacer material or shape
-
- 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
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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/6653—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using the removal of at least part of spacer, e.g. disposable spacer
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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/6656—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using multiple spacer layers, e.g. multiple sidewall spacers
-
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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66568—Lateral single gate silicon transistors
- H01L29/66575—Lateral single gate silicon transistors where the source and drain or source and drain extensions are self-aligned to the sides of the gate
- H01L29/6659—Lateral single gate silicon transistors where the source and drain or source and drain extensions are self-aligned to the sides of the gate with both lightly doped source and drain extensions and source and drain self-aligned to the sides of the gate, e.g. lightly doped drain [LDD] MOSFET, double diffused drain [DDD] MOSFET
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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/7833—Field effect transistors with field effect produced by an insulated gate with lightly doped drain or source extension, e.g. LDD MOSFET's; DDD MOSFET's
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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
- H01L21/02104—Forming layers
- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/0217—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material being a silicon nitride not containing oxygen, e.g. SixNy or SixByNz
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- 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
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
- H01L21/02318—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment
- H01L21/02321—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment introduction of substances into an already existing insulating layer
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02296—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer
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- H01L21/02337—Forming insulating materials on a substrate characterised by the treatment performed before or after the formation of the layer post-treatment treatment by exposure to a gas or vapour
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- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/665—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using self aligned silicidation, i.e. salicide
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- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Electrodes Of Semiconductors (AREA)
- Formation Of Insulating Films (AREA)
Abstract
Description
Claims (14)
- 集積回路を製造する方法であって、
ゲート誘電体上のゲート電極を含むゲートスタックを、その上に有する基板の半導体表面上に第1の誘電体材料を堆積すること、
前記ゲートスタックの側壁上に前記第1の誘電体材料を含む側壁スペーサを形成するため前記第1の誘電体材料をエッチングすること、及び
変換された側壁スペーサ表面を提供するため、そこに少なくとも1つの要素を付加することにより前記第1の誘電体材料の頂部表面を第2の誘電体材料に化学的に変換させること、
を含み、
前記第2の誘電体材料が、遷移領域にわたって前記第1の誘電性材料に化学的に結合される、方法。 - 請求項1に記載の方法であって、
前記エッチングすることが反応性イオンエッチング(RIE)を含み、前記化学的に変換することが、前記第1の誘電性材料との化学反応を起こすための条件下でガスを流すことを含む、方法。 - 請求項2に記載の方法であって、
前記条件が、300℃〜800℃の温度で炭化水素ガスを流すことを含み、前記要素が炭素を含み、前記第1の誘電体材料が炭素を含まない、方法。 - 請求項3に記載の方法であって、
前記第1の誘電性材料がシリコンナイトライドを含み、前記第2の誘電性材料が、シリコンカーバイド(SiC)、シリコンカーボナイトライド(SiCN)、又はシリコンオキシカーボナイトライド(SiOCN)を含む、方法。 - 請求項1に記載の方法であって、
前記ゲートスタックの横の前記半導体表面に軽くドープされたソース及びドレインを形成するようにイオン注入すること、
前記表面変換された側壁スペーサ上に第2のスペーサを形成すること、
前記第2のスペーサを前記形成した後、前記ゲートスタックの横の前記半導体表面にソース及びドレインを形成すること、及び
前記ソース及びドレインを前記形成した後、前記第2のスペーサを選択的に取り除くこと
を更に含む、方法。 - 請求項5に記載の方法であって、
前記選択的除去が、リン酸(HPA)エッチングを含む、方法。 - 請求項6に記載の方法であって、
前記HPAエッチングのための温度が120〜180℃である、方法。 - 請求項1に記載の方法であって、
前記第1の誘電性材料がシリコンナイトライドを含む、方法。 - 集積回路を製造する方法であって、
ゲート誘電体上にゲート電極を含むゲートスタックを、その上に有する基板の半導体表面上に第1の誘電体材料を堆積すること、
前記ゲートスタックの側壁上に前記第1の誘電体材料を含む側壁スペーサを形成するため前記第1の誘電体材料を反応性イオンエッチング(RIE)すること、 表面変換された側壁スペーサを提供するため、そこに少なくとも1つの要素を付加することにより前記第1の誘電体材料の頂部表面を第2の誘電体材料に化学的に変換させること、
を含み、
前記化学的に変換することが、前記第1の誘電性材料との化学反応を起こすための条件下で300℃〜800℃の温度で炭化水素ガスを流すことを含み、
前記要素が炭素を含み、前記第1の誘電体材料が炭素を含まず、更に、
前記第2の誘電体材料が、遷移領域にわたって前記第1の誘電性材料に化学的に結合される、方法。 - 請求項9に記載の方法であって、
前記表面変換された側壁スペーサ上に第2のスペーサを形成すること、
前記第2のスペーサを形成した後、前記ゲートスタックの横に前記半導体表面にソース及びドレインを形成するためイオン注入すること、及び
前記イオン注入の後、120℃〜180℃の温度のリン酸(HPA)エッチングを用いて前記第2のスペーサを選択的に取り除くこと、
を更に含む、方法。 - 集積回路(IC)であって、
半導体表面を有する基板、及び
前記半導体表面上の少なくとも一つの金属酸化物半導体(MOS)トランジスタ、
を含み、
前記MOSトランジスタが、
ゲートスタックの側壁上の側壁スペーサを有するゲート誘電体上のゲート電極を含む前記ゲートスタックであって、前記側壁スペーサが第1の誘電性材料上の第2の誘電体材料を含む、前記ゲートスタックと、
前記側壁スペーサの横のソース及びドレイン領域と、
を含み、
前記第2の誘電性材料が炭素を含み、前記第1の誘電体材料が炭素を含まず、
前記第2の誘電体材料が、遷移領域にわたって前記第1の誘電性材料に化学的に結合される、IC。 - 請求項10に記載のICであって、
前記第1の誘電性材料がシリコンナイトライドを含み、前記第2の誘電性材料が、シリコンカーバイド(SiC)、シリコンカーボナイトライド(SiCN)、又はシリコンオキシカーボナイトライド(SiOCN)を含む、IC。 - 請求項10に記載のICであって、
前記第2の誘電体材料の或るエリアが、前記第1の誘電性材料の或るエリアと整合する、IC。 - 請求項10に記載のICであって、
前記側壁スペーサの総厚が≦100オングストロームである、IC。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161468308P | 2011-03-28 | 2011-03-28 | |
US61/468,308 | 2011-03-28 | ||
US13/427,062 | 2012-03-22 | ||
US13/427,062 US9496359B2 (en) | 2011-03-28 | 2012-03-22 | Integrated circuit having chemically modified spacer surface |
JP2017088445A JP6534163B2 (ja) | 2011-03-28 | 2017-04-27 | 化学的に改変されたスペーサ表面を有する集積回路 |
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JP2017088445A Division JP6534163B2 (ja) | 2011-03-28 | 2017-04-27 | 化学的に改変されたスペーサ表面を有する集積回路 |
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JP2021017147A Division JP7157835B2 (ja) | 2011-03-28 | 2021-02-05 | 化学的に改変されたスペーサ表面を有する集積回路 |
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