JP5220604B2 - フィン型電界効果トランジスタ及びその製造方法 - Google Patents
フィン型電界効果トランジスタ及びその製造方法 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 19
- 238000002353 field-effect transistor method Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 62
- 229910021332 silicide Inorganic materials 0.000 claims abstract description 20
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 20
- 230000005669 field effect Effects 0.000 claims abstract description 13
- 239000004020 conductor Substances 0.000 claims description 150
- 239000004065 semiconductor Substances 0.000 claims description 90
- 125000006850 spacer group Chemical group 0.000 claims description 88
- 239000002019 doping agent Substances 0.000 claims description 20
- 238000005530 etching Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 8
- 230000000873 masking effect Effects 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 9
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 230000006378 damage Effects 0.000 abstract description 3
- 230000007423 decrease Effects 0.000 abstract description 3
- 239000007943 implant Substances 0.000 abstract 1
- 230000006641 stabilisation Effects 0.000 description 18
- 238000011105 stabilization Methods 0.000 description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 9
- 229910052710 silicon Inorganic materials 0.000 description 9
- 239000010703 silicon Substances 0.000 description 9
- 230000015556 catabolic process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 239000000758 substrate Substances 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 5
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 5
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000002513 implantation Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 230000000087 stabilizing effect Effects 0.000 description 3
- 229910052786 argon Inorganic materials 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 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
- 125000001475 halogen functional group Chemical group 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 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
- 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
- H01L29/66818—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 the channel being thinned after patterning, e.g. sacrificial oxidation on fin
-
- 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
- H01L29/7856—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 with an non-uniform gate, e.g. varying doping structure, shape or composition on different sides of the fin, or different gate insulator thickness or composition on opposing fin sides
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- Condensed Matter Physics & Semiconductors (AREA)
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- Manufacturing & Machinery (AREA)
- Thin Film Transistor (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
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Description
Claims (11)
- ソース領域と、
ドレイン領域と、
前記ソース領域から前記ドレイン領域まで延びる半導体フィンと、
前記ソース領域と前記ドレイン領域の間にあって前記半導体フィンに隣接したゲート導体と、を含み、
前記ソース領域と前記ゲート導体の間の前記半導体フィンの第1の抵抗が、前記ゲート導体と前記ドレイン領域の間の前記半導体フィンの第2の抵抗よりも小さく、
前記ソース領域と前記ゲート導体の間の第1の静電容量が、前記ゲート導体と前記ドレイン領域の間の第2の静電容量よりも大きく、
前記ゲート導体が、前記ソース領域および前記ドレイン領域から等距離にあり、
前記半導体フィンが、
前記ゲート導体と前記ソース領域の間の第1の部分と、
前記ゲート導体と前記ドレイン領域の間の第2の部分とを含み、
前記第1の部分および前記第2の部分がそれぞれ、
前記ゲート導体に隣接した内側セクションと、
前記内側セクションに隣接した外側セクションとを含み、
前記内側セクションが、前記外側セクションよりも幅が狭く、前記第2の部分の前記内側セクションが、前記第1の部分の前記内側セクションよりも長い、
フィン型電界効果トランジスタ。 - 前記第2の部分の前記内側セクションの長さが、前記第1の部分の前記内側セクションの長さの少なくとも3倍ある、請求項1に記載のトランジスタ。
- ソース領域と、
ドレイン領域と、
前記ソース領域から前記ドレイン領域まで延びる半導体フィンと、
前記ソース領域と前記ドレイン領域の間にあって前記半導体フィンに隣接したゲート導体とを含み、
前記半導体フィンが、
前記ソース領域と前記ゲート導体の間の第1の部分と、
前記ゲート導体と前記ドレイン領域の間の第2の部分とを含み、
前記第1の部分および前記第2の部分がそれぞれ、前記ゲート導体に隣接した、同じ幅および同じ長さを有する内側セクションを含み、
前記同じ長さが、前記同じ幅の3倍よりも大きく、前記トランジスタが所定の最大電圧で動作できるような抵抗を前記内側セクションに提供し、
前記第1の部分および前記第2の部分がそれぞれ、前記内側セクションに隣接した外側セクションをさらに含み、前記外側のセクションが前記内側セクションよりも幅が広い、
フィン型電界効果トランジスタ。 - 前記内側セクションがそれぞれ、隣接するシリサイド層を持たない対応する上面を有する、請求項3に記載のトランジスタ。
- 前記ソース領域、前記ドレイン領域および前記半導体フィン内にドーパントを含み、前記ソース領域および前記ドレイン領域内の前記ドーパントの濃度が、前記半導体フィン内の前記ドーパントの濃度よりも高い、請求項3に記載のトランジスタ。
- 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、
ソース領域およびドレイン領域を形成すること、
前記ソース領域から前記ドレイン領域まで延びる半導体フィンを形成すること、ならびに
前記ソース領域と前記ドレイン領域の間にあって前記半導体フィンに隣接したゲート導体を形成すること、を含み、
前記ソース領域と前記ゲート導体の間の前記半導体フィンの第1の部分の第1の抵抗が、前記ゲート導体と前記ドレイン領域の間の前記半導体フィンの第2の部分の第2の抵抗よりも小さくなり、
前記ソース領域と前記ゲート導体の間の第1の静電容量が、前記ゲート導体と前記ドレイン領域の間の第2の静電容量よりも大きくなるように、前記半導体フィンおよび前記ゲート導体が形成され、
前記ゲート導体が、前記半導体フィンに隣接して、前記ソース領域および前記ドレイン領域から等距離に形成され、さらに、前記第1の抵抗および前記第2の抵抗を変化させるために前記第1の部分および前記第2の部分の寸法を調整することを含み、
前記寸法の前記調整が、
前記ゲート導体に隣接した第1の内側セクションと、前記第1の内側セクションと前記ソース領域の間の第1の外側セクションとを有するように前記第1の部分を形成することと、
前記ゲート導体に隣接した第2の内側セクションと、前記第2の内側セクションと前記ドレイン領域の間の第2の外側セクションとを有するように前記第2の部分を形成することとを含み、
前記第2の内側セクションが、前記第1の内側セクションよりも長く形成され、
前記第1の内側セクションおよび前記第2の内側セクションが第1の幅を有するように形成され、前記第1の外側セクションおよび前記第2の外側セクションが第2の幅を有するように形成され、
前記第2の幅が前記第1の幅よりも大きい、方法。 - 前記第1の部分を形成することおよび前記第2の部分を形成することが、
前記半導体フィンの上に、前記ゲート導体に隣接させて、第1のスペーサおよび第2のスペーサを、前記第1のスペーサおよび前記第2のスペーサが前記第1の幅の3倍よりも大きい厚さを有し、前記第1のスペーサと前記ソース領域の間に第1の露出セクションが残り、前記第2のスペーサと前記ドレイン領域の間に第2の露出セクションが残るように形成することと、
前記第1のスペーサの前記厚さを低減させることと、
前記第1の露出セクションおよび前記第2の露出セクション上に追加の半導体材料を形成することと、を含む、請求項6に記載の方法。 - 前記第1のスペーサの前記厚さを低減させることが、
前記第2のスペーサにマスクをし、前記第1のスペーサを等方的にエッチングすること、または
90度未満の角度から、前記第1のスペーサに向かって、不活性種を、前記第1のスペーサが、前記第2のスペーサよりも高い濃度の前記不活性種を受け取るように注入し、前記より高い濃度の前記不活性種のために前記第1のスペーサがより速い速度でエッチングされるエッチング・プロセスを実行すること、を含む、請求項7に記載の方法。 - 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、
ソースおよびドレイン領域を形成することと、
前記ソースおよびドレイン領域間に延びる半導体フィンを形成することと、
前記ソースおよびドレイン領域間にあって前記半導体フィンに隣接したゲート導体を形成することと、
前記トランジスタが所定の最大電圧で動作できるように抵抗を最適化するため、前記ゲート導体と前記ソースおよびドレイン領域の間の前記半導体フィンの寸法を調整することと、を含み、
前記寸法を調整することが、前記ゲート導体に隣接した前記半導体フィンの内側セクションよりも幅の広い、前記ソースおよびドレイン領域に隣接した前記半導体フィンの外側セクションを形成することを含む、方法。 - 前記寸法を調整することがさらに、前記内側セクションの長さが、前記内側セクションの幅の3倍よりも大きくなるように前記内側セクションを形成することを含む、請求項9に記載の方法。
- 前記半導体フィン上に、前記ゲート導体に隣接させて、スペーサを、前記スペーサの厚さが前記半導体フィンの幅の3倍よりも大きくなり、前記スペーサと前記ソースおよびドレイン領域の間に露出セクションが残るように形成し、
前記露出セクション上に追加の半導体材料を形成する、
ことによって、前記外側セクションが前記内側セクションよりも幅広く形成される、請求項10に記載の方法。
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Application Number | Priority Date | Filing Date | Title |
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US11/161,442 US7348642B2 (en) | 2005-08-03 | 2005-08-03 | Fin-type field effect transistor |
US11/161,442 | 2005-08-03 | ||
PCT/US2006/028465 WO2007019023A2 (en) | 2005-08-03 | 2006-07-21 | Fin-type field effect transistor |
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JP2009503893A JP2009503893A (ja) | 2009-01-29 |
JP2009503893A5 JP2009503893A5 (ja) | 2009-04-02 |
JP5220604B2 true JP5220604B2 (ja) | 2013-06-26 |
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US (4) | US7348642B2 (ja) |
EP (1) | EP1920467B1 (ja) |
JP (1) | JP5220604B2 (ja) |
KR (1) | KR101027173B1 (ja) |
CN (1) | CN101443912B (ja) |
AT (1) | ATE544182T1 (ja) |
TW (1) | TWI397999B (ja) |
WO (1) | WO2007019023A2 (ja) |
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US7348642B2 (en) | 2008-03-25 |
TW200717805A (en) | 2007-05-01 |
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WO2007019023A3 (en) | 2008-11-13 |
US8524547B2 (en) | 2013-09-03 |
CN101443912A (zh) | 2009-05-27 |
EP1920467A4 (en) | 2011-03-02 |
US20070029624A1 (en) | 2007-02-08 |
US8129773B2 (en) | 2012-03-06 |
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