JP4166758B2 - フィン型電界効果トランジスタおよびその製造方法 - Google Patents
フィン型電界効果トランジスタおよびその製造方法 Download PDFInfo
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- JP4166758B2 JP4166758B2 JP2005021176A JP2005021176A JP4166758B2 JP 4166758 B2 JP4166758 B2 JP 4166758B2 JP 2005021176 A JP2005021176 A JP 2005021176A JP 2005021176 A JP2005021176 A JP 2005021176A JP 4166758 B2 JP4166758 B2 JP 4166758B2
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- 238000004519 manufacturing process Methods 0.000 title claims description 6
- 238000002353 field-effect transistor method Methods 0.000 title 1
- 125000006850 spacer group Chemical group 0.000 claims description 112
- 238000000034 method Methods 0.000 claims description 43
- 239000004065 semiconductor Substances 0.000 claims description 23
- 239000012535 impurity Substances 0.000 claims description 20
- 239000012212 insulator Substances 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 19
- 230000005669 field effect Effects 0.000 claims description 17
- 239000004020 conductor Substances 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 23
- 229910052710 silicon Inorganic materials 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- 230000001681 protective effect Effects 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 238000005530 etching Methods 0.000 description 4
- 230000000295 complement effect Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- 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
- H01L29/68—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
- H01L29/785—Field effect transistors with field effect produced by an insulated gate having a channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
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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
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- 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
-
- 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
- H01L29/66803—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 with a step of doping the vertical sidewall, e.g. using tilted or multi-angled implants
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Thin Film Transistor (AREA)
- Element Separation (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Description
112 第1のフィン(構造)
113 半導体ドープの相対的に狭い区域
114 第2のフィン(構造)
115 半導体ドープの相対的に広い区域
116 絶縁体(材料)
118 第2の(絶縁)スペーサ
120 第1の(絶縁)スペーサ
122 保護マスク
124 ゲート導体
126 ゲート酸化膜
130 埋め込み酸化膜層
Claims (18)
- 基板上にある第1のフィン構造と、
前記基板上にある第2のフィン構造と、
前記第1のフィン構造の側壁に隣接した第1のスペーサと、
前記第2のフィン構造の側壁に隣接した第2のスペーサとを備え、
前記第1のスペーサが前記第1のフィン構造の側壁を覆う部分の方が、前記第2のスペーサが前記第2のフィン構造の側壁を覆う部分より大きい構造にして、前記第1のフィン構造の横断面での前記第1のスペーサで覆われない側壁および上面の寸法からなる実効幅を前記第2のフィン構造の横断面での前記第2のスペーサで覆われない側壁および上面の寸法からなる実効幅より小さくし、前記第1のフィン構造での前記実効幅からなる実効チャネル幅を前記第2のフィン構造での前記実効幅からなる実効チャネル幅より小さくしたフィン型電界効果トランジスタ。 - 前記第1のスペーサの前記基板からの高さが前記第2のスペーサの前記基板からの高さより大きく、前記第1のスペーサと前記第2のスペーサの前記高さの寸法差が、前記第1のフィン構造と前記第2のフィン構造のドーピングされた活性半導体区域の前記実効チャネル幅に差をもたらすようになされている、請求項1に記載のフィン型電界効果トランジスタ。
- 前記第1のスペーサおよび前記第2のスペーサからドープ不純物がそれぞれ隣接した前記第1のフィン構造および前記第2のフィン構造に拡散して、前記第1のスペーサで覆われた前記第1のフィン構造の部分および前記第2のスペーサで覆われた前記第2のフィン構造の部分に、デバイスの電気的不活性部分を備える、請求項1に記載のフィン型電界効果トランジスタ。
- 前記第1のフィン構造が前記第2のフィン構造と同じ物理寸法である、請求項1に記載のフィン型電界効果トランジスタ。
- 前記第1のフィン構造および前記第2のフィン構造の上面および側壁における少なくとも1つのゲート導体と、
前記ゲート導体と前記第1のフィン構造と前記第2のフィン構造の間にあるゲート絶縁体と、
をさらに備える、請求項1に記載のフィン型電界効果トランジスタ。 - 前記第1のスペーサおよび前記第2のスペーサが同じ材料を含む、請求項1に記載のフィン型電界効果トランジスタ。
- 基板の上の埋め込み酸化膜層と、
前記埋め込み酸化膜層上にある第1のフィン構造と、
前記埋め込み酸化膜層上にある第2のフィン構造と、
前記第1のフィン構造の側壁に隣接したスペーサと、
前記第2のフィン構造を覆うゲート絶縁体とを備え、
前記第1のフィン構造の横断面での前記スペーサで覆われない側壁および上面の寸法からなる実効幅を前記第2のフィン構造の横断面での側壁および上面の寸法からなる実効幅より小さくし、前記第1のフィン構造での前記実効幅からなる実効チャネル幅を前記第2のフィン構造での前記実効幅からなる実効チャネル幅より小さくしたフィン型電界効果トランジスタ。 - 前記スペーサが、前記第1のフィン構造と前記第2のフィン構造のドーピングされた活性半導体区域の前記実効チャネル幅に差をもたらすようになされる、請求項7に記載のフィン型電界効果トランジスタ。
- 前記スペーサからドープ不純物が隣接した前記第1のフィン構造に拡散して、前記スペーサで覆われた前記第1のフィン構造の部分に、デバイスの電気的不活性部分を備える、請求項7に記載のフィン型電界効果トランジスタ。
- 前記第1のフィン構造が前記第2のフィン構造と同じ物理寸法である、請求項7に記載のフィン型電界効果トランジスタ。
- 前記第1のフィン構造と前記第2のフィン構造の上面および側壁に少なくとも1つのゲート導体を備える、請求項7に記載のフィン型電界効果トランジスタ。
- フィン型電界効果トランジスタを製造する方法であって、
基板上に第1のフィン構造および第2のフィン構造を形成するステップと、
前記第1のフィン構造の側壁に隣接して第1のスペーサを、前記第2のフィン構造の側壁に隣接して第2のスペーサを形成するステップと、
前記第1のスペーサが前記第1のフィン構造の側壁を覆う部分の方が前記第2のスペーサが前記第2のフィン構造の側壁を覆う部分より大きくなるように、前記第2のスペーサの一部分を除去して、実効チャネル幅となる前記第1のフィン構造の横断面での前記第1のスペーサで覆われない側壁および上面の寸法からなる実効幅を、実効チャネル幅となる前記第2のフィン構造の横断面での前記第2のスペーサで覆われない側壁および上面の寸法からなる実効幅より小さくするステップとを含む、方法。 - 前記第2のスペーサの前記部分を除去するステップの後、前記第1のフィン構造と前記第2のフィン構造の上面および側壁に少なくとも1つのゲート導体を形成するステップをさらに含む、請求項12に記載の方法。
- 前記ゲート導体を形成するステップの前に、前記第1のフィン構造および前記第2のフィン構造上にゲート絶縁体を形成するステップをさらに含む、請求項13に記載の方法。
- 前記第2のスペーサの前記部分を除去するステップの後、前記第1のフィン構造と前記第2のフィン構造のドーピングされた活性半導体区域の前記実効チャネル幅に差が生じるように、前記第1のフィン構造および前記第2のフィン構造のうちの前記第1のスペーサおよび前記第2のスペーサによって保護されていない部分をドープするステップをさらに含む、請求項12に記載の方法。
- 前記第1のフィン構造が前記第2のフィン構造と同じ寸法である、請求項12に記載の方法。
- 前記第1のスペーサおよび前記第2のスペーサが同じ材料を含む、請求項12に記載の方法。
- 前記基板上に前記第1のフィン構造および前記第2のフィン構造を形成するステップが、
前記基板上に埋め込み酸化膜層を形成するステップと、
前記酸化膜層上に前記第1のフィン構造および前記第2のフィン構造を形成するステップと、
を含む、請求項12に記載の方法。
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US10/707,964 US7224029B2 (en) | 2004-01-28 | 2004-01-28 | Method and structure to create multiple device widths in FinFET technology in both bulk and SOI |
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JP2005217418A JP2005217418A (ja) | 2005-08-11 |
JP4166758B2 true JP4166758B2 (ja) | 2008-10-15 |
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JP (1) | JP4166758B2 (ja) |
CN (1) | CN100461451C (ja) |
TW (1) | TWI335067B (ja) |
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