JP5571286B2 - 電界効果トランジスタを製造する方法 - Google Patents
電界効果トランジスタを製造する方法 Download PDFInfo
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- JP5571286B2 JP5571286B2 JP2007533774A JP2007533774A JP5571286B2 JP 5571286 B2 JP5571286 B2 JP 5571286B2 JP 2007533774 A JP2007533774 A JP 2007533774A JP 2007533774 A JP2007533774 A JP 2007533774A JP 5571286 B2 JP5571286 B2 JP 5571286B2
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- 238000000034 method Methods 0.000 title claims description 30
- 238000004519 manufacturing process Methods 0.000 title claims description 28
- 230000005669 field effect Effects 0.000 title claims description 24
- 229910000577 Silicon-germanium Inorganic materials 0.000 claims description 55
- 239000004065 semiconductor Substances 0.000 claims description 51
- 125000006850 spacer group Chemical group 0.000 claims description 49
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 claims description 33
- 239000013078 crystal Substances 0.000 claims description 24
- 239000000758 substrate Substances 0.000 claims description 24
- 239000000956 alloy Substances 0.000 claims description 23
- 229910045601 alloy Inorganic materials 0.000 claims description 20
- 229910052710 silicon Inorganic materials 0.000 claims description 18
- 239000010703 silicon Substances 0.000 claims description 17
- 125000001475 halogen functional group Chemical group 0.000 claims description 12
- 239000002019 doping agent Substances 0.000 claims description 10
- 238000005468 ion implantation Methods 0.000 claims description 10
- 238000005530 etching Methods 0.000 claims description 9
- 238000002513 implantation Methods 0.000 claims description 8
- 239000012212 insulator Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 238000000059 patterning Methods 0.000 claims description 4
- 150000002500 ions Chemical class 0.000 claims 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 31
- 229920005591 polysilicon Polymers 0.000 description 31
- 229910021332 silicide Inorganic materials 0.000 description 24
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 16
- 239000000463 material Substances 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 239000004020 conductor Substances 0.000 description 11
- 150000004767 nitrides Chemical class 0.000 description 11
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 229910052581 Si3N4 Inorganic materials 0.000 description 7
- 239000003989 dielectric material Substances 0.000 description 7
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 7
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 6
- 229910017052 cobalt Inorganic materials 0.000 description 6
- 239000010941 cobalt Substances 0.000 description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 6
- 238000001020 plasma etching Methods 0.000 description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 6
- 229910052715 tantalum Inorganic materials 0.000 description 6
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 6
- 229910052732 germanium Inorganic materials 0.000 description 5
- 239000007943 implant Substances 0.000 description 5
- PEUPIGGLJVUNEU-UHFFFAOYSA-N nickel silicon Chemical compound [Si].[Ni] PEUPIGGLJVUNEU-UHFFFAOYSA-N 0.000 description 5
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 4
- 238000007254 oxidation reaction Methods 0.000 description 4
- 239000000377 silicon dioxide Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 239000002210 silicon-based material Substances 0.000 description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 229910052750 molybdenum Inorganic materials 0.000 description 3
- 239000011733 molybdenum Substances 0.000 description 3
- 229910052758 niobium Inorganic materials 0.000 description 3
- 239000010955 niobium Substances 0.000 description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 3
- 229910052763 palladium Inorganic materials 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910021341 titanium silicide Inorganic materials 0.000 description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 239000010937 tungsten Substances 0.000 description 3
- WQJQOUPTWCFRMM-UHFFFAOYSA-N tungsten disilicide Chemical compound [Si]#[W]#[Si] WQJQOUPTWCFRMM-UHFFFAOYSA-N 0.000 description 3
- 229910021342 tungsten silicide Inorganic materials 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 2
- 239000005368 silicate glass Substances 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 1
- GDFCWFBWQUEQIJ-UHFFFAOYSA-N [B].[P] Chemical compound [B].[P] GDFCWFBWQUEQIJ-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- -1 oxide Chemical class 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical class [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/49—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
- H01L29/4916—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a silicon layer, e.g. polysilicon doped with boron, phosphorus or nitrogen
- H01L29/4925—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a silicon layer, e.g. polysilicon doped with boron, phosphorus or nitrogen with a multiple layer structure, e.g. several silicon layers with different crystal structure or grain arrangement
- H01L29/4933—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a silicon layer, e.g. polysilicon doped with boron, phosphorus or nitrogen with a multiple layer structure, e.g. several silicon layers with different crystal structure or grain arrangement with a silicide layer contacting the silicon layer, e.g. Polycide gate
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
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- H01L29/495—Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET the conductor material next to the insulator being a simple metal, e.g. W, Mo
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/665—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using self aligned silicidation, i.e. salicide
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- 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
- H01L29/66545—Unipolar field-effect transistors with an insulated gate, i.e. MISFET using a dummy, i.e. replacement gate in a process wherein at least a part of the final gate is self aligned to the dummy gate
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Description
iD=f(W/L)
ここでiDはトランジスタの駆動電流であり、Wはチャネル領域の幅、及び、Lはチャネル領域の長さ、即ち、基板のソース領域とドレイン領域の間の間隔である。しかしながら、ソース領域とドレイン領域を互いにどの位近くに配置できるかには限度がある。それらが互いに余りに近くに配置される場合には、短チャネル効果が発生して、トランジスタを停止させることが困難になる可能性がある。トランジスタを完全に停止させることができないときには、トランジスタがオフのときに過剰な漏れ電流が生じて、トランジスタがオフのときにもより多くの電力が消耗されることになる。過剰な漏れ電流はまた、時には出力信号レベルの好ましくないドリフトを引き起こす可能性がある。
本発明による構造体及び方法は、半導体集積回路の製造に有用であり、チャネル領域に隣接して配置される半導体合金材料によって応力がチャネル領域に加えられる、絶縁ゲート電界効果トランジスタ(IGFET)のような歪みチャネル電界効果トランジスタ(FET)を製造するための費用効果の高い方法を提供する。
14:シリコン・オン・インシュレータ(SOI)層
16:バルク領域
17:基板
18:埋め込み酸化物(BOX)層
22:チャネル領域
23:ハロー領域
24:ソース及びドレイン領域
25:拡張領域
26:ポリシリコン層
27:ゲート誘電体
28:低抵抗部分
29:ゲート積層体
31:酸化物領域
32:第1の誘電体スペーサ
34:第2の誘電体スペーサ
39:半導体合金領域(シリコン・ゲルマニウム領域)
40:低抵抗層
42:酸化物層
44:窒化物層
50:犠牲層
58:イオン注入
60:下端部
62:横方向の寸法
64:BOX層の上面
65:シリコン・ゲルマニウム領域
66:開放領域
68:露出表面
70:深さ
72:注入
74:深さ
Claims (5)
- 電界効果トランジスタ(FET)(10)を製造する方法であって、
ゲート積層体(PC)(26)を形成するため、第1の組成を有する基板(17)の単結晶半導体領域(14)の上に重なるゲート多結晶半導体層(26)をパターン付けするステップと、
前記ゲート積層体(26)の側壁の上に重なる犠牲スペーサ(50)を形成するステップと、
前記犠牲スペーサ(50)に隣接する位置(66)において前記単結晶半導体領域(14)の部分に窪みを付けるステップと、
前記第1の組成とは異なる第2の組成を有し、本質的に単結晶半導体合金から成る領域(39)であって、前記犠牲スペーサ(50)は前記半導体合金領域(39)と前記ゲート積層体(26)の間の第1の間隔を少なくとも部分的に決定する、半導体合金領域(39)を前記位置(66)の前記窪みにエピタキシャルに成長させるステップと、
前記エピタキシャル成長に続けて前記犠牲スペーサ(50)を除去するステップと、
前記FET(10)を完成するステップとを含み、
前記単結晶半導体領域(14)の前記部分に窪みを付ける前記ステップは、前記部分にイオン注入するステップと、前記イオン注入によって注入されない前記単結晶半導体領域(14)の部分に対して、前記イオン注入された部分を優先的にエッチングするステップとを含み、
前記FET(10)を完成させる前記ステップは、前記犠牲スペーサ(50)の除去後の前記ゲート積層体(26)の側壁の上に重なる第1のスペーサ(32)を形成するステップと、前記ゲート積層体(26)及び前記第1のスペーサ(32)をマスクとして使用して、少なくとも前記半導体合金領域(39)にソース及びドレインのドーパント注入を実施するステップとを含み、
前記FET(10)のソース及びドレイン領域(24)の位置は、前記ソース及びドレインのドーパント注入によって決定され、前記第1のスペーサ(32)は前記ソース及びドレイン領域(24)と前記ゲート積層体(26)との間の第2の間隔を少なくとも部分的に決定し、前記第1の間隔は前記第2の間隔と異なる、方法。 - 前記単結晶半導体領域(14)はシリコンから成り、前記半導体合金領域(39)はシリコン・ゲルマニウムから成る、請求項1に記載の方法。
- 前記FET(10)を完成させる前記ステップは、前記第1のスペーサ(32)を形成する前に、拡張領域のドーパント注入(25)及びハロー領域のドーパント注入(23)の少なくとも1つを実施するステップをさらに含む、請求項1に記載の方法。
- 前記単結晶半導体領域(14)は、前記基板(17)の埋め込み酸化物層(18)の上に重なる前記基板(17)のシリコン・オン・インシュレータ(SOI)層(14)の内に配置される、請求項2に記載の方法。
- 前記部分にイオン注入するステップは、前記単結晶半導体領域(14)の前記部分にGeイオンを注入するステップを含み、前記イオン注入の深さは、前記部分が窪みを付けられる窪みの深さ(60)を決定する、請求項1に記載の方法。
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US10/711,637 | 2004-09-29 | ||
US10/711,637 US7135724B2 (en) | 2004-09-29 | 2004-09-29 | Structure and method for making strained channel field effect transistor using sacrificial spacer |
PCT/US2005/034948 WO2006039377A1 (en) | 2004-09-29 | 2005-09-29 | Strained channel fet using sacrificial spacer |
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EP (1) | EP1805796B1 (ja) |
JP (1) | JP5571286B2 (ja) |
KR (1) | KR101006306B1 (ja) |
CN (2) | CN101969030B (ja) |
SG (1) | SG142307A1 (ja) |
TW (1) | TWI370547B (ja) |
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TWI370547B (en) | 2012-08-11 |
CN101969030A (zh) | 2011-02-09 |
US20060292779A1 (en) | 2006-12-28 |
WO2006039377A1 (en) | 2006-04-13 |
JP2008515205A (ja) | 2008-05-08 |
KR101006306B1 (ko) | 2011-01-06 |
CN101032018B (zh) | 2012-02-01 |
US7645656B2 (en) | 2010-01-12 |
EP1805796B1 (en) | 2013-02-13 |
CN101032018A (zh) | 2007-09-05 |
CN101969030B (zh) | 2012-06-20 |
TW200616225A (en) | 2006-05-16 |
EP1805796A1 (en) | 2007-07-11 |
US7135724B2 (en) | 2006-11-14 |
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KR20070053300A (ko) | 2007-05-23 |
US20060065914A1 (en) | 2006-03-30 |
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