JP4960007B2 - 半導体装置及び半導体装置の製造方法 - Google Patents
半導体装置及び半導体装置の製造方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims description 64
- 238000004519 manufacturing process Methods 0.000 title claims description 37
- 239000010410 layer Substances 0.000 claims description 137
- 239000013078 crystal Substances 0.000 claims description 50
- 238000000034 method Methods 0.000 claims description 50
- 239000000758 substrate Substances 0.000 claims description 34
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 33
- 229920005591 polysilicon Polymers 0.000 claims description 33
- 239000000463 material Substances 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 23
- 229910052710 silicon Inorganic materials 0.000 claims description 21
- 239000010703 silicon Substances 0.000 claims description 21
- 229910021332 silicide Inorganic materials 0.000 claims description 20
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims description 20
- 229910052732 germanium Inorganic materials 0.000 claims description 18
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 18
- 239000011229 interlayer Substances 0.000 claims description 8
- 238000005530 etching Methods 0.000 claims description 7
- 229910008484 TiSi Inorganic materials 0.000 claims description 5
- 229910019001 CoSi Inorganic materials 0.000 claims description 4
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- 108091006146 Channels Proteins 0.000 description 66
- 230000008569 process Effects 0.000 description 23
- 230000004888 barrier function Effects 0.000 description 20
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 16
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 9
- 230000008859 change Effects 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001020 plasma etching Methods 0.000 description 4
- 241000027294 Fusi Species 0.000 description 3
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 3
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- VLJQDHDVZJXNQL-UHFFFAOYSA-N 4-methyl-n-(oxomethylidene)benzenesulfonamide Chemical compound CC1=CC=C(S(=O)(=O)N=C=O)C=C1 VLJQDHDVZJXNQL-UHFFFAOYSA-N 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000002019 doping agent Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 229910021340 platinum monosilicide Inorganic materials 0.000 description 2
- -1 pure metal Chemical compound 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 102000004129 N-Type Calcium Channels Human genes 0.000 description 1
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- 230000004913 activation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 210000000746 body region Anatomy 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- H01L29/04—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their crystalline structure, e.g. polycrystalline, cubic or particular orientation of crystalline planes
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- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
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- 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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- 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
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- 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
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- H01L29/78—Field effect transistors with field effect produced by an insulated gate
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- 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
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/78684—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising semiconductor materials of Group IV not being silicon, or alloys including an element of the group IV, e.g. Ge, SiN alloys, SiC alloys
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Description
p型MOSダブルゲート構造を有する半導体装置であって、
上面が<100>の結晶面方位のシリコンまたはゲルマニウムからなり、基板上に第1の結晶面方位<110>に延びて形成されたチャネル層と、
前記チャネル層と前記第1の結晶面方位<110>方向の一端側で隣接して前記基板上に形成され、このチャネル層とショットキ接合するメタルまたはメタルシリサイドからなるソース層と、
前記チャネル層と前記第1の結晶面方位<110>方向の他端側で隣接して前記基板上に形成され、このチャネル層とショットキ接合するメタルまたはメタルシリサイドからなるドレイン層と、
前記チャネル層の側壁と隣接するとともに前記チャネル層の電流方向と垂直な第2の結晶面方位<110>方向に延びて少なくとも前記基板上に形成されたゲート層と、
前記チャネル層と前記ゲート層との間に設けられたゲート絶縁膜と、を備え、
1軸性引張り歪が前記電流方向と垂直な前記第2の結晶面方位<110>方向に前記チャネル層の側壁に対して加えられていることを特徴とする。
p型MOSダブルゲート構造を有する半導体装置の製造方法であって、
基板上に設けられた上面が<100>の結晶面方位のシリコンまたはゲルマニウム上に絶縁膜を形成し、
前記シリコンまたは前記ゲルマニウムを選択的にエッチングすることにより、第1の結晶面方位<110>方向に延びるようにフィンを形成し、
前記フィン側面にゲート絶縁膜を形成し、
前記第1の結晶面方位<110>と垂直な第2の結晶面方位<110>方向に延びるように、前記フィンのチャネル層となる領域上の前記絶縁膜上および前記基板上に、ポリシリコン層を形成し、
前記フィン上で露出する前記絶縁膜を除去し、
前記フィンのうち前記絶縁膜が除去された領域を選択的にシリサイド化して、前記フィンに前記チャネル層とショットキ接合するソース層およびドレイン層を形成し、
前記ポリシリコン層を選択的にシリサイド化して、収縮性の材料からなるゲート層を形成することを備え、
1軸性引張り歪が前記第2の結晶面方位<110>方向に前記チャネル層の側壁に対して加えられていることを特徴とする。
p型MOSダブルゲート構造を有する半導体装置の製造方法であって、
基板上に設けられた上面が<100>の結晶面方位のシリコンまたはゲルマニウム上に絶縁膜を形成し、
前記シリコンまたは前記ゲルマニウムを選択的にエッチングすることにより、第1の結晶面方位<110>方向に延びるようにフィンを形成し、
前記フィン側面にゲート絶縁膜を形成し、
前記第1の結晶面方位<110>と垂直な第2の結晶面方位<110>方向に延びるように、前記フィンのチャネル層となる領域上の前記絶縁膜上および前記基板上に、ポリシリコン層を形成し、
前記ポリシリコン層側面に絶縁性のゲート側壁を形成し、
前記フィン上で露出する前記絶縁膜を除去し、
前記フィンのうち前記絶縁膜が除去された領域を選択的にシリサイド化して、前記フィンに前記チャネル層とショットキ接合するソース層およびドレイン層を形成し、
層間絶縁膜を堆積するとともにエッチバックして、前記ポリシリコン層の上部を露出させ、
前記ポリシリコン層を選択的に除去し、
内壁が前記ゲート側壁で構成されたゲート溝に収縮性の材料を埋め込んで、ゲート層を形成することを備え、
1軸性引張り歪が前記第2の結晶面方位<110>方向に前記チャネル層の側壁に対して加えられていることを特徴とする。
2 チャネル層
3 ソース層
4 ドレイン層
5 ゲート層
5a ポリシリコン層
5b ポリシリコン層
6 ゲート絶縁膜
7 SiNハードマスク(絶縁膜)
8 ゲート側壁
9 フィン側壁
10 層間絶縁膜
11 フィン
12 段差
13 ゲート層
14 ゲート溝
15 SiNハードマスク
16 レジストまたはハードマスク
100、200 半導体装置
Claims (5)
- p型MOSダブルゲート構造を有する半導体装置であって、
上面が<100>の結晶面方位のシリコンまたはゲルマニウムからなり、基板上に第1の結晶面方位<110>に延びて形成されたチャネル層と、
前記チャネル層と前記第1の結晶面方位<110>方向の一端側で隣接して前記基板上に形成され、このチャネル層とショットキ接合するメタルまたはメタルシリサイドからなるソース層と、
前記チャネル層と前記第1の結晶面方位<110>方向の他端側で隣接して前記基板上に形成され、このチャネル層とショットキ接合するメタルまたはメタルシリサイドからなるドレイン層と、
前記チャネル層の側壁と隣接するとともに前記チャネル層の電流方向と垂直な第2の結晶面方位<110>方向に延びて少なくとも前記基板上に形成されたゲート層と、
前記チャネル層と前記ゲート層との間に設けられたゲート絶縁膜と、を備え、
1軸性引張り歪が前記電流方向と垂直な前記第2の結晶面方位<110>方向に前記チャネル層の側壁に対して加えられていることを特徴とする半導体装置。 - 前記ゲート層は、収縮性の材料を含み、この収縮性により、前記1軸性引張り歪が前記電流方向と垂直な前記第2の結晶面方位<110>方向に前記チャネル層の側壁に対して加えられていることを特徴とする請求項1に記載の半導体装置。
- 前記収縮性の材料は、TiSi2、CoSi2、TiN、W、または、WSiの何れかであることを特徴とする請求項2に半導体装置。
- p型MOSダブルゲート構造を有する半導体装置の製造方法であって、
基板上に設けられた上面が<100>の結晶面方位のシリコンまたはゲルマニウム上に絶縁膜を形成し、
前記シリコンまたは前記ゲルマニウムを選択的にエッチングすることにより、第1の結晶面方位<110>方向に延びるようにフィンを形成し、
前記フィン側面にゲート絶縁膜を形成し、
前記第1の結晶面方位<110>と垂直な第2の結晶面方位<110>方向に延びるように、前記フィンのチャネル層となる領域上の前記絶縁膜上および前記基板上に、ポリシリコン層を形成し、
前記フィン上で露出する前記絶縁膜を除去し、
前記フィンのうち前記絶縁膜が除去された領域を選択的にシリサイド化して、前記フィンに前記チャネル層とショットキ接合するソース層およびドレイン層を形成し、
前記ポリシリコン層を選択的にシリサイド化して、収縮性の材料からなるゲート層を形成することを備え、
1軸性引張り歪が前記第2の結晶面方位<110>方向に前記チャネル層の側壁に対して加えられている
ことを特徴とする半導体装置の製造方法。 - p型MOSダブルゲート構造を有する半導体装置の製造方法であって、
基板上に設けられた上面が<100>の結晶面方位のシリコンまたはゲルマニウム上に絶縁膜を形成し、
前記シリコンまたは前記ゲルマニウムを選択的にエッチングすることにより、第1の結晶面方位<110>方向に延びるようにフィンを形成し、
前記フィン側面にゲート絶縁膜を形成し、
前記第1の結晶面方位<110>と垂直な第2の結晶面方位<110>方向に延びるように、前記フィンのチャネル層となる領域上の前記絶縁膜上および前記基板上に、ポリシリコン層を形成し、
前記ポリシリコン層側面に絶縁性のゲート側壁を形成し、
前記フィン上で露出する前記絶縁膜を除去し、
前記フィンのうち前記絶縁膜が除去された領域を選択的にシリサイド化して、前記フィンに前記チャネル層とショットキ接合するソース層およびドレイン層を形成し、
層間絶縁膜を堆積するとともにエッチバックして、前記ポリシリコン層の上部を露出させ、
前記ポリシリコン層を選択的に除去し、
内壁が前記ゲート側壁で構成されたゲート溝に収縮性の材料を埋め込んで、ゲート層を形成することを備え、
1軸性引張り歪が前記第2の結晶面方位<110>方向に前記チャネル層の側壁に対して加えられている
ことを特徴とする半導体装置の製造方法。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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JP2006122503A JP4960007B2 (ja) | 2006-04-26 | 2006-04-26 | 半導体装置及び半導体装置の製造方法 |
US11/790,389 US7755104B2 (en) | 2006-04-26 | 2007-04-25 | FinFET pMOS double gate semiconductor device with uniaxial tensile strain applied to channel by shrinkable gate electrode material, current flow in <110> crystal orientation, and source and drain Schottky contacts with channel and manufacturing method thereof |
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US9768255B2 (en) | 2015-04-14 | 2017-09-19 | Samsung Electronics Co., Ltd. | Semiconductor devices including contact structures that partially overlap silicide layers |
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US20070252211A1 (en) | 2007-11-01 |
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