JP5654184B1 - 半導体装置の製造方法、及び、半導体装置 - Google Patents
半導体装置の製造方法、及び、半導体装置 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 189
- 238000004519 manufacturing process Methods 0.000 title claims description 49
- 229910052751 metal Inorganic materials 0.000 claims abstract description 124
- 239000002184 metal Substances 0.000 claims abstract description 124
- 229910052710 silicon Inorganic materials 0.000 claims description 66
- 239000010703 silicon Substances 0.000 claims description 66
- 239000000758 substrate Substances 0.000 claims description 20
- 238000000151 deposition Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000005530 etching Methods 0.000 claims description 10
- 239000010410 layer Substances 0.000 description 129
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 65
- 239000012535 impurity Substances 0.000 description 6
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 6
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 239000000969 carrier Substances 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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Abstract
Description
102.第1のレジスト
103.フィン状シリコン層
104.第4の絶縁膜
105.第1の絶縁膜
106.第1の金属膜
107.第5の絶縁膜
108.第6の絶縁膜
109.第2のレジスト
110.柱状シリコン層
111.ゲート絶縁膜
112.第3の金属
112a.ゲート電極
112b.ゲート配線
113.第3のレジスト
114.第7の絶縁膜
115.第8の絶縁膜
116.第2の絶縁膜
117.第2の金属膜
118.第9の絶縁膜
119.第4のレジスト
120.コンタクト孔
121.コンタクト孔
122.コンタクト
123.コンタクト
124.金属
125.第5のレジスト
126.第5のレジスト
127.第5のレジスト
128.金属配線
129.金属配線
130.金属配線
Claims (10)
- 基板上に形成されたフィン状半導体層と、
前記フィン状半導体層の周囲に形成された第1の絶縁膜と、
前記第1の絶縁膜の周囲に形成された第1の金属膜と、
前記フィン状半導体層上に形成された柱状半導体層と、
前記柱状半導体層の周囲に形成されたゲート絶縁膜と、
前記ゲート絶縁膜の周囲に形成された第3の金属からなるゲート電極と、
前記ゲート電極に接続されたゲート配線と、
前記柱状半導体層の上部側壁の周囲に形成された第2の絶縁膜と、
前記第2の絶縁膜の周囲に形成された第2の金属膜と、
を有し、
前記柱状半導体層上部と前記第2の金属膜とが接続され、前記フィン状半導体層上部と前記第1の金属膜とが接続されることを特徴とする半導体装置。 - 前記半導体層がシリコンであることを特徴とする請求項1に記載の半導体装置。
- 前記第1の金属膜と第2の金属膜の仕事関数は、4.0eVから4.2eVの間であることを特徴とする請求項2に記載の半導体装置。
- 前記第1の金属膜と第2の金属膜の仕事関数は、5.0eVから5.2eVの間であることを特徴とする請求項2に記載の半導体装置。
- 前記柱状半導体層の幅は前記フィン状半導体層の短い方の幅と同じであることを特徴とする請求項1に記載の半導体装置。
- 基板上にフィン状半導体層を形成し、前記フィン状半導体層の周囲に第1の絶縁膜を形成し、前記第1の絶縁膜の周囲に第1の金属膜を形成する第1の工程と、
前記第1の工程の後、前記フィン状半導体層上に柱状半導体層を形成する第2の工程と、
前記第2の工程の後、前記柱状半導体層の周囲にゲート絶縁膜を形成し、前記ゲート絶縁膜の周囲に第3の金属からなるゲート電極と前記ゲート電極に接続されたゲート配線とを形成する第3の工程と、
前記第3の工程の後、前記柱状半導体層の上部側壁の周囲に第2の絶縁膜を形成し、前記第2の絶縁膜の周囲に第2の金属膜を形成する第4の工程と、
を有することを特徴とする半導体装置の製造方法。 - 前記第1の工程は、
半導体基板上にフィン状半導体層を形成するための第1のレジストを形成し、半導体基板をエッチングし、前記フィン状半導体層を形成し、前記第1のレジストを除去し、前記フィン状半導体層の周囲に第4の絶縁膜を堆積し、前記第4の絶縁膜をエッチバックし、前記フィン状半導体層の上部を露出し、前記フィン状半導体層の周囲と前記第4の絶縁膜の上部に前記第1の絶縁膜を形成し、前記第1の絶縁膜の周囲に前記第1の金属膜を堆積し、前記第1の金属膜をエッチングし、前記フィン状半導体層の周囲にサイドウォール状に残存させ、第5の絶縁膜を堆積し、エッチバックを行い、前記第1の金属膜の上部を露出し、露出した前記第1の金属膜を除去することを含むことを特徴とする、請求項6に記載の半導体装置の製造方法。 - 前記第2の工程は、
前記フィン状半導体層の周囲に第6の絶縁膜を堆積し、前記第6の絶縁膜をエッチバックし、前記フィン状半導体層の上部を露出し、前記フィン状半導体層に直交するように第2のレジストを形成し、前記フィン状半導体層をエッチングし、前記第2のレジストを除去することにより、前記フィン状半導体層と前記第2のレジストとが直交する部分が前記柱状半導体層となるよう前記柱状半導体層を形成することを含むことを特徴とする、請求項6又は7に記載の半導体装置の製造方法。 - 前記第3の工程は、
前記柱状半導体層の周囲と前記フィン状半導体層の上部に前記ゲート絶縁膜を堆積し、前記ゲート絶縁膜を覆うように前記第3の金属膜を堆積し、前記ゲート配線を形成するための第3のレジストを形成し、前記第3の金属膜をエッチングすることにより前記ゲート配線を形成し、第7の絶縁膜を堆積し、前記第7の絶縁膜をエッチバックし、前記第3の金属膜の上部を露出し、露出した前記第3の金属膜を除去することを含むことを特徴とする、請求項6乃至8のうちいずれか1項に記載の半導体装置の製造方法。 - 前記第4の工程は、
前記柱状半導体層の上部に第8の絶縁膜を堆積し、前記第8の絶縁膜をエッチバックし、前記柱状半導体層の上部を露出し、前記柱状半導体層上部に前記第2の絶縁膜を堆積し、前記第2の絶縁膜を覆うように前記第2の金属膜を堆積し、前記第2の金属膜をエッチングし、前記柱状半導体層上部の周囲にサイドウォール状に残存させることを含むことを特徴とする、請求項6乃至9のうちいずれか1項に記載の半導体装置の製造方法。
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US9024376B2 (en) * | 2013-01-25 | 2015-05-05 | Unisantis Electronics Singapore Pte. Ltd. | Vertical transistor with dielectrically-isolated work-function metal electrodes surrounding the semiconductor pillar |
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JPH04111469A (ja) * | 1990-08-31 | 1992-04-13 | Nippon Telegr & Teleph Corp <Ntt> | 薄膜トランジスタ回路 |
JP2002050770A (ja) * | 2000-06-15 | 2002-02-15 | Se Bin | サブゲート及びショットキーソース/ドレインを備えた薄膜トランジスタ並びにその製造方法 |
JP2010251678A (ja) * | 2009-04-20 | 2010-11-04 | Unisantis Electronics Japan Ltd | 半導体装置の製造方法 |
JP2012004473A (ja) * | 2010-06-21 | 2012-01-05 | Renesas Electronics Corp | 半導体装置及び半導体装置の製造方法 |
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WO2014170949A1 (ja) | 2014-10-23 |
US20170338340A1 (en) | 2017-11-23 |
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