JP2008047824A - 半導体装置及びその製造方法 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 139
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000009792 diffusion process Methods 0.000 claims abstract description 112
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 76
- 229910021332 silicide Inorganic materials 0.000 claims abstract description 75
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 238000002955 isolation Methods 0.000 claims description 23
- 238000000638 solvent extraction Methods 0.000 claims description 2
- 239000010410 layer Substances 0.000 description 144
- 239000002019 doping agent Substances 0.000 description 21
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 17
- 229910052710 silicon Inorganic materials 0.000 description 17
- 239000010703 silicon Substances 0.000 description 17
- 239000002184 metal Substances 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 14
- 238000000034 method Methods 0.000 description 13
- 238000005468 ion implantation Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000007423 decrease Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 238000001020 plasma etching Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 230000004913 activation Effects 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 229910017052 cobalt Inorganic materials 0.000 description 2
- 239000010941 cobalt Substances 0.000 description 2
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 2
- 238000001459 lithography Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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- H01L21/28518—Deposition of conductive or insulating materials for electrodes conducting electric current from a gas or vapour, e.g. condensation of conductive layers on semiconductor bodies comprising elements of Group IV of the Periodic Table the conductive layers comprising silicides
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Abstract
【解決手段】本発明の1態様による半導体装置は、半導体基板上に第1のゲート絶縁膜を介して形成された第1のゲート電極と、前記半導体基板中に前記第1のゲート電極を挟んで形成され第1の接合深さを有する第1の拡散層と、前記第1の拡散層中に形成され第1の厚さを有する第1のシリサイド層とを含む第1の半導体素子と、前記半導体基板上に第2のゲート絶縁膜を介して形成された第2のゲート電極と、前記半導体基板中に前記第2のゲート電極を挟んで形成され第2の接合深さを有する第2の拡散層と、前記第2の拡散層中に形成され第2の厚さを有する第2のシリサイド層とを含む第2の半導体素子を具備し、前記第1の接合深さは前記第2の接合深さより浅く、前記第1の厚さは前記第2の厚さよりも薄いことを特徴とする。
【選択図】図4
Description
Claims (5)
- 半導体基板に形成された第1の半導体素子及び第2の半導体素子を具備し、
前記第1の半導体素子は、
前記半導体基板上に第1のゲート絶縁膜を介して形成された第1のゲート電極と、
前記半導体基板中に前記第1のゲート電極を挟んで設けられ、第1の接合深さを有する第1の拡散層と、
前記第1の拡散層中に設けられ、第1の厚さを有する第1のシリサイド層とを含み、
前記第2の半導体素子は、
前記半導体基板上に第2のゲート絶縁膜を介して形成された第2のゲート電極と、
前記半導体基板中に前記第2のゲート電極を挟んで設けられ、前記第1の接合深さよりも深い第2の接合深さを有する第2の拡散層と、
前記第2の拡散層中に設けられ、前記第1の厚さよりも厚い第2の厚さを有する第2のシリサイド層とを含む
ことを特徴とする半導体装置。 - 前記第1の拡散層の接合界面と前記第1のシリサイド層の下面との間の距離は、70nm以上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の半導体素子の隣接するゲート電極間隔は、0.4μm以下であることを特徴とする請求項1若しくは2に記載の半導体装置。
- 前記第1のゲート電極は、第1の側壁絶縁膜及び第2の側壁絶縁膜を備え、前記第1の半導体素子が形成される領域の前記半導体基板中に上部を突き出して設けられた素子分離は、少なくとも前記第2の側壁絶縁膜を備えることを特徴とする請求項1ないし3のいずれか1に記載の半導体装置。
- 半導体基板表面を第1の半導体領域及び第2の半導体領域に区画し、その上部が前記半導体基板から突き出している素子分離を形成する工程と、
前記第1の半導体領域の前記半導体基板上に第1の絶縁膜を介して第1のゲート電極を形成し、前記第2の半導体領域の前記半導体基板上に第2の絶縁膜を介して第2のゲート電極を形成する工程と、
前記第1のゲート電極を挟んで前記第1の半導体領域の前記半導体基板中に、第1の接合深さを有する第1の拡散層を形成し、前記第2のゲート電極を挟んで前記第2の半導体領域の前記半導体基板中に、前記第1の接合深さをよりも深い第2の接合深さを有する第2の拡散層を形成する工程と、
前記第1及び第2のゲート電極の側面にそれぞれ第1の側壁絶縁膜を形成する工程と、
前記第1のゲート電極及び前記第1の側壁絶縁膜を挟んで前記第1の半導体領域の前記半導体基板中に、前記第1の接合深さよりも深い第3の接合深さを有する第3の拡散層を形成し、前記第2のゲート電極及び前記第1の側壁絶縁膜を挟んで前記第2の半導体領域の前記半導体基板中に、前記第2及び第3の接合深さよりも深い第4の接合深さを有する第4の拡散層を形成する工程と、
少なくとも前記第1の半導体領域において前記第1の側壁絶縁膜及び前記素子分離のそれぞれの側面に第2の側壁絶縁膜を形成する工程と、
前記第1のゲート電極及び前記第1及び第2の側壁絶縁膜をマスクとして前記第3の拡散層中に第1の厚さを有する第1のシリサイド層を形成し、少なくとも前記第2のゲート電極及び前記第1の側壁絶縁膜をマスクとして前記第4の拡散層中に前記第1の厚さよりも厚い第2の厚さを有する第2のシリサイド層を形成する工程と
を具備することを特徴とする半導体装置の製造方法。
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JP2010027872A (ja) * | 2008-07-18 | 2010-02-04 | Nec Electronics Corp | 半導体装置およびその製造方法 |
JP2011060959A (ja) * | 2009-09-09 | 2011-03-24 | Fujitsu Semiconductor Ltd | 半導体装置及びその製造方法 |
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JP4822982B2 (ja) * | 2006-08-21 | 2011-11-24 | 株式会社東芝 | 半導体装置の製造方法 |
TWI471946B (zh) * | 2010-11-17 | 2015-02-01 | Innolux Corp | 薄膜電晶體 |
JP6509673B2 (ja) * | 2015-08-10 | 2019-05-08 | 株式会社東芝 | 半導体装置 |
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FR2881575B1 (fr) * | 2005-01-28 | 2007-06-01 | St Microelectronics Crolles 2 | Transistor mos a grille totalement siliciuree |
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KR100642648B1 (ko) * | 2005-09-13 | 2006-11-10 | 삼성전자주식회사 | 실리사이드막들을 갖는 콘택 구조체, 이를 채택하는반도체소자, 및 이를 제조하는 방법들 |
JP4822982B2 (ja) * | 2006-08-21 | 2011-11-24 | 株式会社東芝 | 半導体装置の製造方法 |
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JP2010027872A (ja) * | 2008-07-18 | 2010-02-04 | Nec Electronics Corp | 半導体装置およびその製造方法 |
JP2011060959A (ja) * | 2009-09-09 | 2011-03-24 | Fujitsu Semiconductor Ltd | 半導体装置及びその製造方法 |
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US7723231B2 (en) | 2010-05-25 |
US20080044991A1 (en) | 2008-02-21 |
JP4822982B2 (ja) | 2011-11-24 |
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