JP2014199942A - バルクFinFET中のSiフィンのフィン下部近くのSTI形状 - Google Patents
バルクFinFET中のSiフィンのフィン下部近くのSTI形状 Download PDFInfo
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- JP2014199942A JP2014199942A JP2014126541A JP2014126541A JP2014199942A JP 2014199942 A JP2014199942 A JP 2014199942A JP 2014126541 A JP2014126541 A JP 2014126541A JP 2014126541 A JP2014126541 A JP 2014126541A JP 2014199942 A JP2014199942 A JP 2014199942A
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- 238000000034 method Methods 0.000 claims abstract description 32
- 239000004065 semiconductor Substances 0.000 claims abstract description 28
- 239000000758 substrate Substances 0.000 claims abstract description 28
- 230000005669 field effect Effects 0.000 claims abstract description 6
- 238000009413 insulation Methods 0.000 claims abstract 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 28
- 229910052710 silicon Inorganic materials 0.000 claims description 28
- 239000010703 silicon Substances 0.000 claims description 28
- 238000002955 isolation Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims 2
- 238000010168 coupling process Methods 0.000 claims 2
- 238000005859 coupling reaction Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 239000010410 layer Substances 0.000 description 23
- 230000003071 parasitic effect Effects 0.000 description 11
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 6
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 6
- 229910052814 silicon oxide Inorganic materials 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 239000003989 dielectric material Substances 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 229920002120 photoresistant polymer Polymers 0.000 description 4
- 239000012212 insulator Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052581 Si3N4 Inorganic materials 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000005406 washing Methods 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
- H01L21/70—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
- H01L21/84—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 other than a semiconductor body, e.g. being an insulating body
- H01L21/845—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 other than a semiconductor body, e.g. being an insulating body including field-effect transistors with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
-
- 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
- H01L21/76—Making of isolation regions between components
- H01L21/762—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers
- H01L21/76224—Dielectric regions, e.g. EPIC dielectric isolation, LOCOS; Trench refilling techniques, SOI technology, use of channel stoppers using trench refilling with dielectric materials
-
- 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
- H01L21/77—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
- H01L21/823431—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of transistors with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L29/66787—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel
- H01L29/66795—Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Element Separation (AREA)
- Thin Film Transistor (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Abstract
Description
22 パッド層
24 マスク層
26 フォトレジスト
28 開口
32 トレンチ
34 酸化物ライナー
36 誘電体材料
40 STI領域
42 半導体ストリップ
52 凹部
60 フィン
61 中心線
62 ゲート誘電体
64 ゲート電極
66 FinFET
100 フィン
102 基板
106 ゲート誘電体
108 ゲート
110 キャパシタ
120 STI領域
122 半導体ストリップ
240 STI領域
260 フィン
264 ゲート電極
264_1、264_2 部分
270 キャパシタ
Claims (6)
- 集積回路構造の形成方法であって、
頂面を有する半導体基板を提供するステップと、
前記半導体基板中に、それぞれがトレンチの側壁に形成された酸化物ライナーと前記トレンチに充填された酸化物とを含む第1絶縁領域と第2絶縁領域を形成するステップと、
前記第1絶縁領域と前記第2絶縁領域を陥凹するステップと、を備え、
前記第1絶縁領域と前記第2絶縁領域の残り部分の頂面は窪み表面であり、
前記第1絶縁領域と前記第2絶縁領域の除去部分間の前記半導体基板の部分、及び、隣接する部分は、フィンを形成し、
前記第1絶縁領域と前記第2絶縁領域の1つの窪み頂面は、1点で、前記フィンと結合し、且つ、前記結合点は、前記窪み頂面の最低点であることを特徴とする方法。 - 前記陥凹ステップは、SiCoNiプロセスを含み、前記SiCoNiプロセスは、NH3、HFをプロセスガスとするステップを含むことを特徴とする請求項1に記載の方法。
- 前記フィンの頂面と側壁上に、ゲート誘電体を形成するステップと、
前記ゲート誘電体上に、ゲート電極を形成するステップと、を備えるフィン型電界効果トランジスタを形成するステップを更に含み、
前記ゲート電極は、前記第1絶縁領域と前記第2絶縁領域の真上に位置する部分を有することを特徴とする請求項1に記載の方法。 - 集積回路構造の形成方法であって、前記方法は、
シリコン基板を提供するステップと、
前記シリコン基板中に、それぞれがトレンチの側壁に形成された酸化物ライナーと前記トレンチに充填された酸化物とを含む複数のシャロートレンチアイソレーション(STI)領域を形成するステップと、
SiCoNiプロセスを用いて、前記複数のSTI領域の頂部を除去して、第1シリコンフィンと第2シリコンフィンを形成し、前記第1シリコンフィンと前記第2シリコンフィンは、前記複数のSTI領域の下部間と上方で水平であるステップと、
FinFETを形成するステップと、を備え、
FinFETを形成する前記ステップは、
前記第1シリコンフィンと前記第2シリコンフィンの頂面と側壁上に、ゲート誘電体を形成するステップと、
前記ゲート誘電体上に、ゲート電極を形成するステップと、を備え、
前記ゲート電極は、直接、前記第1シリコンフィン上方から、前記第2シリコンフィン上方に延伸し、
前記複数のSTI領域の1つの窪み頂面は、1点で、前記第1シリコンフィンと結合し、且つ、前記結合点は、前記窪み頂面の最低点であることを特徴とする方法。 - 前記SiCoNiプロセスは、NH3、HFをプロセスガスとするステップを含むことを特徴とする請求項4に記載の方法。
- 集積回路構造の形成方法であって、前記方法は、
シリコン基板を提供するステップと、
前記シリコン基板中に、それぞれがトレンチの側壁に形成された酸化物ライナーと前記トレンチに充填された酸化物とを含む複数のシャロートレンチアイソレーション(STI)領域を形成するステップと、
SiCoNiプロセスを用いて、前記複数のSTI領域の頂部を除去して、第1シリコンフィンと第2シリコンフィンを形成し、前記第1シリコンフィンと前記第2シリコンフィンは、前記複数のSTI領域の下部間と上方で水平であるステップと、
FinFETを形成するステップと、を備え、
FinFETを形成する前記ステップは、
前記第1シリコンフィンと前記第2シリコンフィンの頂面と側壁上に、ゲート誘電体を形成するステップと、
前記ゲート誘電体上に、ゲート電極を形成するステップと、を備え、
前記ゲート電極は、直接、前記第1シリコンフィン上方から、前記第2シリコンフィン上方に延伸し、
前記複数のSTI領域の1つは、前記第1シリコンフィンと前記第2シリコンフィン間(中間STI領域)に位置し、前記中間STI領域の頂面の最高点は、前記第1シリコンフィンと前記第2シリコンフィン間の中心線に近接し、且つ、前記中間STI領域の前記頂面の最低点は近接するが、前記中間STI領域と前記第1シリコンフィン間の頂面の結合点ではないことを特徴とする方法。
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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US25536509P | 2009-10-27 | 2009-10-27 | |
US61/255,365 | 2009-10-27 | ||
US12/843,693 | 2010-07-26 | ||
US12/843,693 US9953885B2 (en) | 2009-10-27 | 2010-07-26 | STI shape near fin bottom of Si fin in bulk FinFET |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2010240535A Division JP5632255B2 (ja) | 2009-10-27 | 2010-10-27 | バルクFinFET中のSiフィンのフィン下部近くのSTI形状 |
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JP2014199942A true JP2014199942A (ja) | 2014-10-23 |
JP5836437B2 JP5836437B2 (ja) | 2015-12-24 |
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JP2010240535A Active JP5632255B2 (ja) | 2009-10-27 | 2010-10-27 | バルクFinFET中のSiフィンのフィン下部近くのSTI形状 |
JP2014126541A Active JP5836437B2 (ja) | 2009-10-27 | 2014-06-19 | 集積回路構造の形成方法 |
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JP2010240535A Active JP5632255B2 (ja) | 2009-10-27 | 2010-10-27 | バルクFinFET中のSiフィンのフィン下部近くのSTI形状 |
Country Status (4)
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US (1) | US9953885B2 (ja) |
JP (2) | JP5632255B2 (ja) |
CN (1) | CN102054741B (ja) |
TW (1) | TWI436410B (ja) |
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