JP2014225599A - 半導体装置 - Google Patents
半導体装置 Download PDFInfo
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- JP2014225599A JP2014225599A JP2013104838A JP2013104838A JP2014225599A JP 2014225599 A JP2014225599 A JP 2014225599A JP 2013104838 A JP2013104838 A JP 2013104838A JP 2013104838 A JP2013104838 A JP 2013104838A JP 2014225599 A JP2014225599 A JP 2014225599A
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- silicon carbide
- carbide substrate
- semiconductor device
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 51
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 63
- 239000000758 substrate Substances 0.000 claims abstract description 48
- 239000012535 impurity Substances 0.000 claims abstract description 30
- 230000007547 defect Effects 0.000 abstract description 19
- 230000015556 catabolic process Effects 0.000 description 9
- 230000005684 electric field Effects 0.000 description 6
- 238000005468 ion implantation Methods 0.000 description 4
- 102000004129 N-Type Calcium Channels Human genes 0.000 description 2
- 108090000699 N-Type Calcium Channels Proteins 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D30/00—Field-effect transistors [FET]
- H10D30/60—Insulated-gate field-effect transistors [IGFET]
- H10D30/64—Double-diffused metal-oxide semiconductor [DMOS] FETs
- H10D30/66—Vertical DMOS [VDMOS] FETs
- H10D30/668—Vertical DMOS [VDMOS] FETs having trench gate electrodes, e.g. UMOS transistors
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/102—Constructional design considerations for preventing surface leakage or controlling electric field concentration
- H10D62/103—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices
- H10D62/105—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE]
- H10D62/106—Constructional design considerations for preventing surface leakage or controlling electric field concentration for increasing or controlling the breakdown voltage of reverse-biased devices by having particular doping profiles, shapes or arrangements of PN junctions; by having supplementary regions, e.g. junction termination extension [JTE] having supplementary regions doped oppositely to or in rectifying contact with regions of the semiconductor bodies, e.g. guard rings with PN or Schottky junctions
- H10D62/107—Buried supplementary regions, e.g. buried guard rings
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/13—Semiconductor regions connected to electrodes carrying current to be rectified, amplified or switched, e.g. source or drain regions
- H10D62/149—Source or drain regions of field-effect devices
- H10D62/151—Source or drain regions of field-effect devices of IGFETs
- H10D62/156—Drain regions of DMOS transistors
- H10D62/157—Impurity concentrations or distributions
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/10—Shapes, relative sizes or dispositions of the regions of the semiconductor bodies; Shapes of the semiconductor bodies
- H10D62/17—Semiconductor regions connected to electrodes not carrying current to be rectified, amplified or switched, e.g. channel regions
- H10D62/393—Body regions of DMOS transistors or IGBTs
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10D—INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10D62/00—Semiconductor bodies, or regions thereof, of devices having potential barriers
- H10D62/80—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials
- H10D62/83—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge
- H10D62/832—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group IV materials, e.g. B-doped Si or undoped Ge being Group IV materials comprising two or more elements, e.g. SiGe
- H10D62/8325—Silicon carbide
Landscapes
- Electrodes Of Semiconductors (AREA)
- Junction Field-Effect Transistors (AREA)
Abstract
Description
4 炭化珪素基板
6 表面電極
8 裏面電極
10 ドレイン層
12 ドリフト層
14 埋込層
16,16a,16b 第1エピタキシャル層
18,18a,18b 第2エピタキシャル層
20 ベース層
21 第3エピタキシャル層
22 ゲート電極
24 ソース層
26 コンタクト層
28 トレンチ
30 ゲート絶縁膜
32 表面絶縁膜
42 半導体装置
52 半導体装置
62 半導体装置
Claims (4)
- 表面に表面電極が設けられており、裏面に裏面電極が設けられた炭化珪素基板に形成された半導体装置であって、
裏面電極と導通している第1導電型のドレイン層と、
ドレイン層に対して炭化珪素基板の表面側に設けられており、ドレイン層よりも不純物濃度が低い第1導電型のドリフト層と、
ドリフト層に対して炭化珪素基板の表面側に設けられており、表面電極と導通している第2導電型のベース層と、
炭化珪素基板の表面からドリフト層まで達するトレンチの内部に配置されており、絶縁膜によって炭化珪素基板と表面電極から絶縁されたゲート電極と、
ベース層と表面電極の間に設けられており、ゲート電極の絶縁膜と表面電極に接している第1導電型のソース層と、
ドリフト層とベース層の間に設けられており、炭化珪素基板の表面からのドリフト層側の端部の深さが、炭化珪素基板の表面からのトレンチの先端の深さよりも深くなるように形成された、第2導電型の埋込層と、
埋込層とベース層の間に設けられており、埋込層よりも不純物濃度の高い第1エピタキシャル層を備える半導体装置。 - 第1エピタキシャル層とベース層の間に設けられており、第1エピタキシャル層よりも不純物濃度が低い第2エピタキシャル層をさらに備える請求項1の半導体装置。
- 第1エピタキシャル層と第2エピタキシャル層の不純物濃度の平均がドリフト層の不純物濃度よりも低い請求項1または2の半導体装置。
- 埋込層とベース層の間に設けられており、ベース層とは異なる導電型を有する第3エピタキシャル層をさらに備える請求項1から3の何れか一項の半導体装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013104838A JP6077385B2 (ja) | 2013-05-17 | 2013-05-17 | 半導体装置 |
US14/262,121 US9614071B2 (en) | 2013-05-17 | 2014-04-25 | Semiconductor device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013104838A JP6077385B2 (ja) | 2013-05-17 | 2013-05-17 | 半導体装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2014225599A true JP2014225599A (ja) | 2014-12-04 |
JP6077385B2 JP6077385B2 (ja) | 2017-02-08 |
Family
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JP2013104838A Expired - Fee Related JP6077385B2 (ja) | 2013-05-17 | 2013-05-17 | 半導体装置 |
Country Status (2)
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US (1) | US9614071B2 (ja) |
JP (1) | JP6077385B2 (ja) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016225560A (ja) * | 2015-06-03 | 2016-12-28 | トヨタ自動車株式会社 | 半導体装置 |
JP2018195782A (ja) * | 2017-05-22 | 2018-12-06 | 株式会社東芝 | 半導体装置、インバータ回路、駆動装置、車両、及び、昇降機 |
JP2019186252A (ja) * | 2018-04-02 | 2019-10-24 | 株式会社豊田中央研究所 | 半導体装置 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2014241368A (ja) * | 2013-06-12 | 2014-12-25 | 住友電気工業株式会社 | 炭化珪素半導体装置 |
US20150118810A1 (en) * | 2013-10-24 | 2015-04-30 | Madhur Bobde | Buried field ring field effect transistor (buf-fet) integrated with cells implanted with hole supply path |
DE102016226237B4 (de) | 2016-02-01 | 2024-07-18 | Fuji Electric Co., Ltd. | Siliziumcarbid-halbleitervorrichtung |
JP6472776B2 (ja) | 2016-02-01 | 2019-02-20 | 富士電機株式会社 | 炭化珪素半導体装置および炭化珪素半導体装置の製造方法 |
DE112017000297T5 (de) | 2016-08-12 | 2018-11-15 | Fuji Electric Co., Ltd. | Halbleiterbauteil und Herstellungsverfahren eines Halbleiterbauteils |
KR102406116B1 (ko) | 2018-04-27 | 2022-06-07 | 현대자동차 주식회사 | 반도체 소자 및 그 제조 방법 |
JP7275573B2 (ja) * | 2018-12-27 | 2023-05-18 | 富士電機株式会社 | 炭化珪素半導体装置および炭化珪素半導体装置の製造方法 |
JP7331783B2 (ja) * | 2020-05-29 | 2023-08-23 | 豊田合成株式会社 | 半導体装置の製造方法 |
CN115188823B (zh) * | 2022-09-14 | 2023-01-24 | 华羿微电子股份有限公司 | 一种强鲁棒性沟槽mosfet器件及制备方法 |
CN119866038B (zh) * | 2025-03-24 | 2025-07-01 | 杭州谱析光晶半导体科技有限公司 | 一种具有浅P+结构的SiC MOSFET器件及其制备工艺 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001250947A (ja) * | 2000-03-06 | 2001-09-14 | Toshiba Corp | 電力用半導体素子およびその製造方法 |
JP2009117593A (ja) * | 2007-11-06 | 2009-05-28 | Denso Corp | 炭化珪素半導体装置およびその製造方法 |
JP2011253837A (ja) * | 2010-05-31 | 2011-12-15 | Denso Corp | 炭化珪素半導体装置およびその製造方法 |
JP2012169385A (ja) * | 2011-02-11 | 2012-09-06 | Denso Corp | 炭化珪素半導体装置 |
JP2013089700A (ja) * | 2011-10-14 | 2013-05-13 | Fuji Electric Co Ltd | 半導体装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3811624B2 (ja) | 2001-04-27 | 2006-08-23 | 松下電器産業株式会社 | 半導体装置 |
JP3973395B2 (ja) * | 2001-10-16 | 2007-09-12 | 株式会社豊田中央研究所 | 半導体装置とその製造方法 |
JP5017865B2 (ja) * | 2006-01-17 | 2012-09-05 | 富士電機株式会社 | 半導体装置 |
JP4793390B2 (ja) | 2008-02-13 | 2011-10-12 | 株式会社デンソー | 炭化珪素半導体装置およびその製造方法 |
US8415671B2 (en) * | 2010-04-16 | 2013-04-09 | Cree, Inc. | Wide band-gap MOSFETs having a heterojunction under gate trenches thereof and related methods of forming such devices |
-
2013
- 2013-05-17 JP JP2013104838A patent/JP6077385B2/ja not_active Expired - Fee Related
-
2014
- 2014-04-25 US US14/262,121 patent/US9614071B2/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2001250947A (ja) * | 2000-03-06 | 2001-09-14 | Toshiba Corp | 電力用半導体素子およびその製造方法 |
JP2009117593A (ja) * | 2007-11-06 | 2009-05-28 | Denso Corp | 炭化珪素半導体装置およびその製造方法 |
JP2011253837A (ja) * | 2010-05-31 | 2011-12-15 | Denso Corp | 炭化珪素半導体装置およびその製造方法 |
JP2012169385A (ja) * | 2011-02-11 | 2012-09-06 | Denso Corp | 炭化珪素半導体装置 |
JP2013089700A (ja) * | 2011-10-14 | 2013-05-13 | Fuji Electric Co Ltd | 半導体装置 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016225560A (ja) * | 2015-06-03 | 2016-12-28 | トヨタ自動車株式会社 | 半導体装置 |
JP2018195782A (ja) * | 2017-05-22 | 2018-12-06 | 株式会社東芝 | 半導体装置、インバータ回路、駆動装置、車両、及び、昇降機 |
JP2019186252A (ja) * | 2018-04-02 | 2019-10-24 | 株式会社豊田中央研究所 | 半導体装置 |
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Publication number | Publication date |
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US20140339569A1 (en) | 2014-11-20 |
JP6077385B2 (ja) | 2017-02-08 |
US9614071B2 (en) | 2017-04-04 |
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