JP2006060039A - 電界効果型トランジスタ、相補型電界効果型トランジスタ、および電界効果型トランジスタの製造方法 - Google Patents
電界効果型トランジスタ、相補型電界効果型トランジスタ、および電界効果型トランジスタの製造方法 Download PDFInfo
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- 230000005669 field effect Effects 0.000 title claims abstract description 74
- 238000004519 manufacturing process Methods 0.000 title claims description 15
- 230000000295 complement effect Effects 0.000 title claims description 13
- 239000000758 substrate Substances 0.000 claims abstract description 90
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims abstract description 83
- 239000013078 crystal Substances 0.000 claims description 67
- 230000015572 biosynthetic process Effects 0.000 claims description 32
- 238000002955 isolation Methods 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 13
- 229910004298 SiO 2 Inorganic materials 0.000 description 23
- 239000004065 semiconductor Substances 0.000 description 18
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- 229910052710 silicon Inorganic materials 0.000 description 11
- 239000010703 silicon Substances 0.000 description 11
- 230000007423 decrease Effects 0.000 description 8
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- 238000007254 oxidation reaction Methods 0.000 description 5
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- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
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- 238000007796 conventional method Methods 0.000 description 1
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- 238000011065 in-situ storage Methods 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
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Abstract
【解決手段】 {100}面を主面とする単結晶シリコン基板101上に、単結晶シリコンの<010>結晶軸方向または<010>結晶軸方向と等価な軸方向に実質的に延在するゲート電極107と、ゲート電極107の両脇において単結晶シリコン基板101の表面に設けられたソース・ドレイン領域129とを設ける。ゲート電極107の直下の領域におけ単結晶シリコン基板101の表面に、主面と、ゲート電極107の延在方向に沿って主面に対して傾斜した傾斜面133と、を設ける。
【選択図】 図1
Description
本実施形態は、Pチャネル型MOSFETに関する。図1は、本実施形態に係るMOS型トランジスタ(Pチャネル型MOSFET)の構成を示す平面図である。また、図2は、図1のA−A’断面図である。また、図3は、MOS型トランジスタ100のゲート電極107の近傍の構成を模式的に示す斜視図である。
図1〜図3に示したMOS型トランジスタ100は、単結晶シリコン基板101の主面において、素子分離領域103の矩形形成パターンすなわちチャネル領域108の隣接する二辺が<010>軸方向および<001>軸方向に延在している。そして、ゲート電極107の延在方向が<010>軸方向となっている。このため、ソース・ドレイン領域129を結ぶチャネル長方向が<001>軸方向となっている。そして、チャネル領域108は上面131および傾斜面133を有する構成となっている。
本実施形態は、第一の実施形態に記載のMOS型トランジスタ100において、傾斜面133が曲面である構成に関する。
本実施形態は、第一の実施形態に記載のMOS型トランジスタ100において、傾斜面133a〜傾斜面133dがいずれも複数の平面からなる構成に関する。
以上の実施形態においては、MOS型トランジスタ100をPチャネル型のMOS型トランジスタとする場合を例に説明したが、MOS型トランジスタ100をNチャネル型のMOS型トランジスタとしてもよい。
以上の実施形態に記載の半導体装置は、CMOSデバイスに適用することもできる。図9(a)〜図9(c)および図10(a)〜図10(b)は、本実施形態に係る半導体装置の構成を模式的に示す平面図である。
本実施例では、第一の実施形態に記載のMOS型トランジスタ100(図1)に関する。MOS型トランジスタ100がPチャネル型MOSFETおよびNチャネル型MOSFETである場合のそれぞれについて、傾斜角θを10度、20度、および30度とした。それぞれの傾斜角の場合について、ゲート幅WGすなわち主面の法線方向から見たチャネル領域108の形成領域の幅と、傾斜面133形成領域bの比とオン電流Ionとの関係を計算により得た。
WG=2a+b
である。また、
チャネル幅=b+2a/cosθ
である。
101 単結晶シリコン基板
103 素子分離領域
104 Pチャネル型MOSFET
105 ゲート絶縁膜
106 Nチャネル型MOSFET
107 ゲート電極
108 チャネル領域
109 SiO2膜
111 SiN膜
113 トレンチ
115 SiO2膜
117 後退部
119 SiO2膜
121 斜面
123 SiO2膜
125 ソース接続プラグ
127 ゲート接続プラグ
129 ソース・ドレイン領域
131 上面
133 傾斜面
133a 傾斜面
133b 傾斜面
133c 傾斜面
133d 傾斜面
135 配線
137 ドレイン接続プラグ
Claims (12)
- {100}面を主面とする単結晶シリコンからなる基板と、
前記基板上に設けられ、前記単結晶シリコンの<010>結晶軸方向または前記<010>結晶軸方向と等価な軸方向に実質的に延在するゲート電極と、
前記ゲート電極の両脇において、前記基板の表面に設けられたソース・ドレイン領域と、
を含み、
前記ゲート電極の直下の領域における前記基板の表面は、
前記主面と、
前記ゲート電極の延在方向に沿って前記主面に対して傾斜した傾斜面と、
を有することを特徴とする電界効果型トランジスタ。 - {100}面を主面とする単結晶シリコンからなる基板と、
前記基板上に設けられた素子分離領域と、
前記基板上に設けられ、周囲を前記素子分離領域によって画定された素子領域と、
前記基板上に、前記素子領域を分断するように前記素子領域から前記素子分離領域にわたって設けられ、前記単結晶シリコンの<010>結晶軸方向または前記<010>結晶軸方向と等価な軸方向に実質的に延在するゲート電極と、
前記ゲート電極によって分断された両脇において、前記基板の表面に設けられたソース・ドレイン領域と、
を含み、
前記ゲート電極の直下の領域における前記基板の表面は、
前記主面と、
前記ゲート電極の延在方向に沿って前記主面に対して傾斜した傾斜面と、
を有することを特徴とする電界効果型トランジスタ。 - 請求項2に記載の電界効果型トランジスタにおいて、前記傾斜面が前記素子分離領域の近傍に設けられていることを特徴とする電界効果型トランジスタ。
- 請求項1乃至3いずれかに記載の電界効果型トランジスタにおいて、前記傾斜面が単一の前記単結晶シリコンの結晶面により構成されていることを特徴とする電界効果型トランジスタ。
- 請求項1乃至3いずれかに記載の電界効果型トランジスタにおいて、前記傾斜面が複数の前記単結晶シリコンの結晶面により構成されていることを特徴とする電界効果型トランジスタ。
- 請求項1乃至5いずれかに記載の電界効果型トランジスタにおいて、前記傾斜面が前記単結晶シリコンの(301)面、前記(301)面に等価な面、または前記(301)面もしくは(301)面に等価な前記面に対して5度以内の角度の差を有する面を含むことを特徴とする電界効果型トランジスタ。
- 請求項1乃至3いずれかに記載の電界効果型トランジスタにおいて、前記傾斜面が曲面であり、前記単結晶シリコンの<010>結晶軸方向または前記<010>結晶軸方向と等価な軸方向に沿って、前記傾斜面の面方位が、前記単結晶シリコンの<100>結晶軸方向から<ab0>結晶軸方向(aおよびbは互いに独立の整数)または前記<ab0>結晶軸方向と等価な方向に向かって連続的に変化することを特徴とする電界効果型トランジスタ。
- 請求項1乃至7いずれかに記載の電界効果型トランジスタにおいて、
前記傾斜面の面積は、前記主面の法線方向から見た前記基板の前記ソース・ドレイン領域を離隔する領域の面積の10%以上であることを特徴とする電界効果型トランジスタ。 - Nチャネル電界効果型トランジスタと、Pチャネル電界効果型トランジスタと、を含む相補型電界効果型トランジスタであって、
前記Nチャネル電界効果型トランジスタおよび前記Pチャネル電界効果型トランジスタが請求項1乃至8いずれかに記載の電界効果型トランジスタであることを特徴とする相補型電界効果型トランジスタ。 - 請求項9に記載の相補型電界効果型トランジスタにおいて、
前記Pチャネル電界効果型トランジスタにおいては、前記傾斜面の面積は、前記主面の法線方向から見た前記基板の前記ソース・ドレイン領域を離隔する領域の面積の10%以上であるとともに、
前記Nチャネル電界効果型トランジスタにおいては、前記傾斜面の面積は、前記主面の法線方向から見た前記基板の前記ソース・ドレイン領域を離隔する領域の面積の10%未満であることを特徴とする相補型電界効果型トランジスタ。 - 請求項9または10に記載の相補型電界効果型トランジスタにおいて、
素子分離領域により分割された複数の前記Pチャネル電界効果型トランジスタと、
一つの前記Nチャネル電界効果型トランジスタと、
を有することを特徴とする相補型電界効果型トランジスタ。 - {100}面を主面とする単結晶シリコンからなる基板の前記主面の上部にマスクを成膜する工程と、
前記マスクおよび前記基板をこの順に選択的に除去して凹部を設けるとともに、前記凹部の脇に素子形成領域を設ける工程と、
マスクを成膜する前記工程で成膜されたマスクの側壁を、前記凹部から前記素子形成領域に向かって後退させて、前記主面の一部を前記マスクから露出させる工程と、
主面の一部をマスクから露出させる前記工程の後、前記基板の表面全面を酸化し、前記マスクから露出した前記基板に、前記主面に対し<010>結晶軸方向または実質的に前記<010>結晶軸方向と等価な軸方向に沿って傾斜する傾斜面を設ける工程と、
前記凹部に絶縁膜を埋設し、素子分離領域を形成する工程と、
前記マスクを除去し、前記傾斜面を含む前記素子形成領域における前記基板の上部に、実質的に前記単結晶シリコンの<010>結晶軸方向または実質的に前記<010>結晶軸方向と等価な軸方向に延在するゲート電極を形成する工程と、
を含むことを特徴とする電界効果型トランジスタの製造方法。
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JP2004240752A JP5017771B2 (ja) | 2004-08-20 | 2004-08-20 | 相補型電界効果型トランジスタ、および電界効果型トランジスタの製造方法 |
CNB2005100927460A CN100474611C (zh) | 2004-08-20 | 2005-08-19 | 场效应晶体管及其制造方法、互补场效应晶体管 |
US11/207,758 US20060049430A1 (en) | 2004-08-20 | 2005-08-22 | Field-effect transistor, complementary field-effect transistor, and method of manufacturing field-effect transistor |
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JP5017771B2 JP5017771B2 (ja) | 2012-09-05 |
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JP (1) | JP5017771B2 (ja) |
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WO2009157040A1 (ja) * | 2008-06-25 | 2009-12-30 | 富士通マイクロエレクトロニクス株式会社 | 半導体装置及びその製造方法 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101100430B1 (ko) | 2005-11-17 | 2011-12-30 | 삼성전자주식회사 | p-MOS를 포함하는 반도체 소자 및 그 제조 방법 |
WO2007130240A1 (en) * | 2006-04-28 | 2007-11-15 | Advanced Micro Devices , Inc. | A transistor having a channel with tensile strain and oriented along a crystallographic orientation with increased charge carrier mobility |
DE102006019835B4 (de) * | 2006-04-28 | 2011-05-12 | Advanced Micro Devices, Inc., Sunnyvale | Transistor mit einem Kanal mit Zugverformung, der entlang einer kristallographischen Orientierung mit erhöhter Ladungsträgerbeweglichkeit orientiert ist |
JP2009076879A (ja) | 2007-08-24 | 2009-04-09 | Semiconductor Energy Lab Co Ltd | 半導体装置 |
US8232598B2 (en) * | 2007-09-20 | 2012-07-31 | Semiconductor Energy Laboratory Co., Ltd. | Display device and method for manufacturing the same |
US8044464B2 (en) * | 2007-09-21 | 2011-10-25 | Semiconductor Energy Laboratory Co., Ltd. | Semiconductor device |
US7915713B2 (en) * | 2008-07-30 | 2011-03-29 | Qimonda Ag | Field effect transistors with channels oriented to different crystal planes |
CN103632948B (zh) * | 2013-12-25 | 2018-05-25 | 苏州晶湛半导体有限公司 | 一种半导体器件及其制造方法 |
CN106847879B (zh) * | 2017-01-19 | 2021-12-03 | 北京世纪金光半导体有限公司 | 一种斜面沟道的SiC MOSFET器件及制备方法 |
JP7082557B2 (ja) | 2018-09-28 | 2022-06-08 | 三和シヤッター工業株式会社 | シャッターケース |
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JPS6448462A (en) * | 1987-08-19 | 1989-02-22 | Hitachi Ltd | Semiconductor device |
JPH04247663A (ja) * | 1991-02-04 | 1992-09-03 | Mitsubishi Electric Corp | 電界効果素子およびその製造方法 |
JPH0964347A (ja) * | 1995-08-21 | 1997-03-07 | Mitsubishi Electric Corp | 半導体装置およびその製造方法 |
JP2004087640A (ja) * | 2002-08-26 | 2004-03-18 | Renesas Technology Corp | 半導体装置 |
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US5874317A (en) * | 1996-06-12 | 1999-02-23 | Advanced Micro Devices, Inc. | Trench isolation for integrated circuits |
JP3955404B2 (ja) * | 1998-12-28 | 2007-08-08 | 株式会社ルネサステクノロジ | 半導体集積回路装置の製造方法 |
US7312485B2 (en) * | 2000-11-29 | 2007-12-25 | Intel Corporation | CMOS fabrication process utilizing special transistor orientation |
JP2002208705A (ja) * | 2001-01-09 | 2002-07-26 | Mitsubishi Electric Corp | 半導体装置及びその製造方法 |
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2005
- 2005-08-19 CN CNB2005100927460A patent/CN100474611C/zh not_active Expired - Fee Related
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JPS6448462A (en) * | 1987-08-19 | 1989-02-22 | Hitachi Ltd | Semiconductor device |
JPH04247663A (ja) * | 1991-02-04 | 1992-09-03 | Mitsubishi Electric Corp | 電界効果素子およびその製造方法 |
JPH0964347A (ja) * | 1995-08-21 | 1997-03-07 | Mitsubishi Electric Corp | 半導体装置およびその製造方法 |
JP2004087640A (ja) * | 2002-08-26 | 2004-03-18 | Renesas Technology Corp | 半導体装置 |
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WO2009157040A1 (ja) * | 2008-06-25 | 2009-12-30 | 富士通マイクロエレクトロニクス株式会社 | 半導体装置及びその製造方法 |
US8362530B2 (en) | 2008-06-25 | 2013-01-29 | Fujitsu Semiconductor Limited | Semiconductor device including MISFET and its manufacture method |
JP5158197B2 (ja) * | 2008-06-25 | 2013-03-06 | 富士通セミコンダクター株式会社 | 半導体装置及びその製造方法 |
Also Published As
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CN100474611C (zh) | 2009-04-01 |
US20060049430A1 (en) | 2006-03-09 |
CN1738054A (zh) | 2006-02-22 |
JP5017771B2 (ja) | 2012-09-05 |
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