JP5902868B1 - 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 215
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 61
- 239000010410 layer Substances 0.000 claims abstract description 276
- 239000002184 metal Substances 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 31
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims abstract description 23
- 229920005591 polysilicon Polymers 0.000 claims abstract description 23
- 239000011229 interlayer Substances 0.000 claims abstract description 18
- 239000000758 substrate Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000009792 diffusion process Methods 0.000 claims description 25
- 150000001875 compounds Chemical class 0.000 claims description 8
- 238000005530 etching Methods 0.000 claims description 7
- 238000000151 deposition Methods 0.000 claims 1
- 230000003071 parasitic effect Effects 0.000 abstract description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 71
- 229910052710 silicon Inorganic materials 0.000 description 68
- 239000010703 silicon Substances 0.000 description 68
- 150000004767 nitrides Chemical class 0.000 description 9
- 150000002736 metal compounds Chemical class 0.000 description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 229910052785 arsenic Inorganic materials 0.000 description 3
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 1
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Abstract
Description
すなわち、3つのマスクを用いてシリコン柱、平面状シリコン層、ゲート配線を形成している。
シリコン基板101上に形成されたフィン状シリコン層103と、前記フィン状シリコン層103の周囲に形成された第1の絶縁膜104と、前記フィン状シリコン層103上に形成された柱状シリコン層108と、前記柱状シリコン層108の周囲に形成されたゲート絶縁膜115と、前記ゲート絶縁膜115の周囲に形成された金属からなるゲート電極116aと、前記ゲート電極116aに接続された前記フィン状シリコン層103の長手方向に直交する方向に延在する金属からなるゲート配線116bと、前記フィン状シリコン層103上に形成された第1のエピタキシャル成長層120と、を有し、前記第1のエピタキシャル成長層120の前記フィン状シリコン層103の長手方向に直交する方向の幅200は、前記フィン状シリコン層103の前記フィン状シリコン層103の長手方向に直交する方向の幅201より広いことを特徴とする。
102.第1のレジスト
103.フィン状シリコン層
104.第1の絶縁膜
105.第2の絶縁膜
106.第1のポリシリコン
106a.第1のダミーゲート
107.第2のレジスト
108.柱状シリコン層
109.第4の絶縁膜
109a.第4の絶縁膜
110.第2のポリシリコン
110a.第2のダミーゲート
111.第2の拡散層
112.第5の絶縁膜
112a.絶縁膜サイドウォール
113.第6の絶縁膜
113a.絶縁膜サイドウォール
114.第1の層間絶縁膜
115.ゲート絶縁膜
116.金属
116a.ゲート電極
116b.ゲート配線
117.第1の拡散層
118.第7の絶縁膜
119.第2のエピタキシャル成長層
120.第1のエピタキシャル成長層
121.第2の半導体と金属の化合物層
122.第1の半導体と金属の化合物層
123.コンタクトストッパ
124.第2の層間絶縁膜
125.第3のレジスト
126.コンタクト孔
127.第4のレジスト
128.コンタクト孔
129.第5のレジスト
130.コンタクト孔
131.金属
131a.金属配線
131b.金属配線
131c.金属配線
132.コンタクト
133.コンタクト
134.コンタクト
135.第6のレジスト
136.第6のレジスト
137.第6のレジスト
200.第1のエピタキシャル成長層のフィン状シリコン層の長手方向に直交する方向の幅
201.フィン状シリコン層のフィン状シリコン層の長手方向に直交する方向の幅
202.第2のエピタキシャル成長層のフィン状シリコン層の長手方向に直交する方向の幅
203.柱状シリコン層のフィン状シリコン層の長手方向に直交する方向の幅
Claims (4)
- 半導体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、前記フィン状半導体層の上部を露出する第1工程と、
前記第1工程の後、
前記フィン状半導体層の上部の周囲に第2の絶縁膜を形成し、
前記第2の絶縁膜の上に第1のポリシリコンを堆積し平坦化し、
ゲート配線と柱状半導体層を形成するための第2のレジストを、前記フィン状半導体層の長手方向に対して直交する方向に形成し、
前記第1のポリシリコンと前記第2の絶縁膜と前記フィン状半導体層をエッチングすることにより、柱状半導体層と前記第1のポリシリコンによる第1のダミーゲートを形成する第2工程と、
前記第2工程の後、前記柱状半導体層と前記第1のダミーゲートの周囲に第4の絶縁膜を形成し、前記第1のダミーゲートと前記柱状半導体層の側壁に第2のダミーゲートを形成する第3工程と、
前記第3工程の後、前記第2のダミーゲートの周囲に、第5の絶縁膜と第6の絶縁膜を形成する第4工程と、
前記第4の工程の後、第1の層間絶縁膜を堆積し化学機械研磨し、前記第2のダミーゲートと前記第1のダミーゲートの上部を露出し、前記第2のダミーゲートと前記第1のダミーゲートを除去し、前記第2の絶縁膜と前記第4の絶縁膜を除去し、ゲート絶縁膜を前記柱状半導体層の周囲に形成し、金属を堆積し、エッチバックを行い、ゲート電極及びゲート配線を形成する第5工程と、
前記第5工程の後、第7の絶縁膜を前記ゲート電極及び前記ゲート配線上に形成する第7工程と、
前記第7工程の後、前記第1の層間絶縁膜を除去し、前記第5の絶縁膜と前記第6の絶縁膜と前記第7の絶縁膜をエッチングすることにより前記第5の絶縁膜と前記第6の絶縁膜とによる絶縁膜サイドウォールを形成し前記柱状半導体層上部を露出し、前記フィン状半導体層上に、第1のエピタキシャル成長層を形成し、前記柱状半導体層上に第2のエピタキシャル成長層を形成する第8工程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3工程の後、前記フィン状半導体層上部に第2の拡散層を形成する工程を含むことを特徴とする請求項1に記載の半導体装置の製造方法。
- 前記第5工程の後、前記柱状半導体層上部に第1の拡散層を形成する第6工程を有することを特徴とする請求項1に記載の半導体装置の製造方法。
- 前記第8工程の後、前記第1のエピタキシャル成長層と前記第2のエピタキシャル成長層に金属と半導体の化合物を形成する第9工程を有することを特徴とする請求項1に記載の半導体装置の製造方法。
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US9318447B2 (en) * | 2014-07-18 | 2016-04-19 | Taiwan Semiconductor Manufacturing Company Limited | Semiconductor device and method of forming vertical structure |
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