JP2010010371A - 半導体装置及びその製造方法 - Google Patents
半導体装置及びその製造方法 Download PDFInfo
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- JP2010010371A JP2010010371A JP2008167620A JP2008167620A JP2010010371A JP 2010010371 A JP2010010371 A JP 2010010371A JP 2008167620 A JP2008167620 A JP 2008167620A JP 2008167620 A JP2008167620 A JP 2008167620A JP 2010010371 A JP2010010371 A JP 2010010371A
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 53
- 229910052814 silicon oxide Inorganic materials 0.000 claims abstract description 53
- 238000002955 isolation Methods 0.000 claims abstract description 37
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 44
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 44
- 239000000758 substrate Substances 0.000 claims description 25
- 238000005530 etching Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 238000005268 plasma chemical vapour deposition Methods 0.000 claims description 3
- 238000002230 thermal chemical vapour deposition Methods 0.000 claims description 2
- 239000010408 film Substances 0.000 claims 25
- 239000013039 cover film Substances 0.000 claims 3
- 230000007423 decrease Effects 0.000 abstract description 3
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 15
- 229910052710 silicon Inorganic materials 0.000 description 15
- 239000010703 silicon Substances 0.000 description 15
- 239000012535 impurity Substances 0.000 description 8
- 229910021332 silicide Inorganic materials 0.000 description 7
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical group [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 7
- 238000009792 diffusion process Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- 150000004767 nitrides Chemical class 0.000 description 5
- 238000001020 plasma etching Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-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
- 239000000969 carrier Substances 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000000206 photolithography Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910000077 silane Inorganic materials 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 1
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910021334 nickel silicide Inorganic materials 0.000 description 1
- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- VEDJZFSRVVQBIL-UHFFFAOYSA-N trisilane Chemical compound [SiH3][SiH2][SiH3] VEDJZFSRVVQBIL-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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Abstract
【解決手段】半導体装置は、NMOSFET用活性領域AR1、PMOSFET用活性領域AR2を画定する素子分離溝STと、素子分離溝の下部のみを埋め、その上に凹部を画定する酸化シリコン膜OXと、NMOSFET領域AR1に形成されたNMOSFETと、PMOSFET領域AR2に形成されたPMOSFETと、NMOSFET構造を覆い、NMOSFET用活性領域AR1の周囲における凹部上及びPMOSFET用活性領域AR2のゲート幅方向外側における凹部上に延在して形成された引張応力膜TSFと、PMOSFET構造を覆い、PMOSFET用活性領域AR2のチャネル長方向外側における凹部上に延在して形成された圧縮応力膜CSFとを有する。
【選択図】図1
Description
半導体基板と、
前記半導体基板表面部に形成され、NMOSFET用活性領域、PMOSFET用活性領域を画定する素子分離溝と、
前記素子分離溝の下部のみを埋め、その上に凹部を画定する酸化シリコン膜と、
前記NMOSFET用活性領域に形成され、絶縁ゲート電極構造、n型ソース/ドレイン領域を有するNMOSFET構造と、
前記PMOSFET用活性領域に形成され、絶縁ゲート電極構造、p型ソース/ドレイン領域を有するPMOSFET構造と、
前記NMOSFET構造を覆い、前記NMOSFET用活性領域周囲の前記凹部上及び前記PMOSFET用活性領域のゲート幅方向外側における前記凹部上に延在して形成された引張応力膜と、
前記PMOSFET構造を覆い、前記PMOSFET用活性領域のチャネル長方向外側における前記凹部上に延在して形成された圧縮応力膜と、
を有する半導体装置
が提供される。
(a)半導体基板表面部に、NMOSFET用活性領域、PMOSFET用活性領域を画定する素子分離溝を形成する工程と;
(b)前記素子分離溝に圧縮応力を有する酸化シリコン膜を埋め込む工程と、
(c)NMOSFET用活性領域に絶縁ゲート電極構造、n型ソース/ドレイン領域を有するNMOSFET構造、前記PMOSFET用活性領域に絶縁ゲート電極構造、p型ソース/ドレイン領域を有するPMOSFET構造を形成する工程と;
(d)前記素子分離溝に埋め込まれた酸化シリコン膜の上部を除去し、凹部を形成する工程と、
(e)前記NMOSFET用活性領域を覆い、前記NMOSFET用活性領域周囲の前記凹部上及び前記PMOSFET用活性領域のチャネル幅方向外側における前記凹部上に延在する引張応力絶縁膜を形成する工程と、
(f)前記PMOSFET用活性領域を覆い、前記PMOSFET用活性領域のチャネル長方向外側における前記凹部上に延在する圧縮応力絶縁膜を形成する工程と、
を含む半導体装置の製造方法
が提供される。
12 酸化シリコン膜、
13 窒化シリコン膜、
14 酸化シリコン膜、
AR 活性領域、
ST 素子分離溝、
TSF 引張応力膜、
CSF 圧縮応力膜、
EX エクステンション領域、
SD ソース/ドレイン領域、
PW p型ウェル、
NW n型ウェル、
15 ゲート絶縁膜、
16 ゲート電極(多結晶シリコン膜)、
18 引張応力窒化シリコン膜、
19 酸化シリコン膜、
20 圧縮応力窒化シリコン膜、
21 エクステンション領域、
22 ソース/ドレイン拡散層、
SW サイドウォール、
SL シリサイド領域、
Claims (10)
- 半導体基板と、
前記半導体基板表面部に形成され、NMOSFET用活性領域、PMOSFET用活性領域を画定する素子分離溝と、
前記素子分離溝の下部のみを埋め、その上に凹部を画定する酸化シリコン膜と、
前記NMOSFET用活性領域に形成され、絶縁ゲート電極構造、n型ソース/ドレイン領域を有するNMOSFET構造と、
前記PMOSFET用活性領域に形成され、絶縁ゲート電極構造、p型ソース/ドレイン領域を有するPMOSFET構造と、
前記NMOSFET構造を覆い、前記NMOSFET用活性領域周囲の前記凹部上及び前記PMOSFET用活性領域のゲート幅方向外側における前記凹部上に延在して形成された引張応力膜と、
前記PMOSFET構造を覆い、前記PMOSFET用活性領域のチャネル長方向外側における前記凹部上に延在して形成された圧縮応力膜と、
を有する半導体装置。 - 前記NMOSFET構造と前記PMOSFET構造とが平行なチャネル長方向を有し、前記引張応力膜、前記圧縮応力膜が前記チャネル長方向に沿ったストライプ状に形成されている請求項1記載の半導体装置。
- 前記凹部の深さは、前記ソース/ドレイン領域より深く、前記素子分離溝の深さの半分以下である請求項1または2記載の半導体装置。
- 前記引張応力膜、前記圧縮応力膜が接している請求項1〜3のいずれか1項記載の半導体装置。
- 前記引張応力膜、圧縮応力膜が窒化シリコン膜である請求項1〜4のいずれか1項記載の半導体装置。
- (a)半導体基板表面部に、NMOSFET用活性領域、PMOSFET用活性領域を画定する素子分離溝を形成する工程と;
(b)前記素子分離溝に圧縮応力を有する酸化シリコン膜を埋め込む工程と、
(c)NMOSFET用活性領域に絶縁ゲート電極構造、n型ソース/ドレイン領域を有するNMOSFET構造、前記PMOSFET用活性領域に絶縁ゲート電極構造、p型ソース/ドレイン領域を有するPMOSFET構造を形成する工程と;
(d)前記素子分離溝に埋め込まれた酸化シリコン膜の上部を除去し、凹部を形成する工程と、
(e)前記NMOSFET用活性領域を覆い、前記NMOSFET用活性領域周囲の前記凹部上及び前記PMOSFET用活性領域のチャネル幅方向外側における前記凹部上に延在する引張応力絶縁膜を形成する工程と、
(f)前記PMOSFET用活性領域を覆い、前記PMOSFET用活性領域のチャネル長方向外側における前記凹部上に延在する圧縮応力絶縁膜を形成する工程と、
を含む半導体装置の製造方法。 - 前記工程(e)が、前記半導体基板上に引張応力絶縁膜を堆積し、前記PMOSFET用活性領域、および前記PMOSFET用活性領域のチャネル長方向外側における前記凹部の上から前記引張応力絶縁膜を除去し、
前記工程(f)が、前記半導体基板上に圧縮応力絶縁膜を堆積し、前記NMOSFET用活性領域、前記NMOSFET用活性領域周囲の前記凹部及び前記PMOSFET用活性領域のチャネル幅方向外側における前記凹部の上から前記圧縮応力絶縁膜を除去する、
請求項6記載の半導体装置の製造方法。 - 前記工程(e)における引張応力膜、前記工程(f)における圧縮応力膜が、窒化シリコン膜である請求項7記載の半導体装置の製造方法。
- 前記工程(e)が、前記引張応力膜を熱CVDで形成し、前記工程(f)が前記圧縮応力膜をプラズマCVDで形成する請求項8記載の半導体装置の製造方法。
- 前記工程(e)、(f)の内、先に行われる工程が前記窒化シリコン膜の上に酸化シリコンカバー膜を堆積し、前記酸化シリコンカバー膜を前記窒化シリコン膜と同一パターンにエッチングし、前記工程(e)、(f)の内、後に行われる工程が前記酸化シリコンカバー膜をエッチングストッパとして使用する請求項8又は9記載の半導体装置の製造方法。
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US10043903B2 (en) * | 2015-12-21 | 2018-08-07 | Samsung Electronics Co., Ltd. | Semiconductor devices with source/drain stress liner |
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US10736557B2 (en) | 2016-03-30 | 2020-08-11 | Brain F.I.T. Imaging, LLC | Methods and magnetic imaging devices to inventory human brain cortical function |
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