JP4046140B1 - 炭化珪素半導体装置の製造方法 - Google Patents
炭化珪素半導体装置の製造方法 Download PDFInfo
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- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 229910010271 silicon carbide Inorganic materials 0.000 title claims abstract description 106
- 239000004065 semiconductor Substances 0.000 title claims abstract description 86
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims description 13
- 239000013078 crystal Substances 0.000 claims abstract description 84
- 239000000758 substrate Substances 0.000 claims abstract description 41
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 28
- 239000010703 silicon Substances 0.000 claims abstract description 28
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 claims abstract description 5
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 239000010410 layer Substances 0.000 description 56
- 239000010408 film Substances 0.000 description 36
- 239000011229 interlayer Substances 0.000 description 7
- 239000010409 thin film Substances 0.000 description 6
- 238000001020 plasma etching Methods 0.000 description 5
- 239000000969 carrier Substances 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
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Abstract
【解決手段】第1導電型炭化珪素結晶基板と第1導電型炭化珪素結晶層と第2導電型炭化珪素結晶層と第1導電型半導体領域とを含む半導体積層基板に対して、第1導電型半導体領域および第2導電型炭化珪素結晶層を貫通し、第1導電型炭化珪素結晶層を底面とする溝を形成する工程と、溝の少なくとも一部に珪素膜を形成する工程と、珪素膜が形成された半導体積層基板を珪素膜の溶融温度以上に加熱する工程と、加熱後の珪素膜を除去する工程と、珪素膜の除去後の露出面上にゲート絶縁膜を形成する工程と、ゲート絶縁膜の表面上にゲート電極層を形成する工程と、を含む、炭化珪素半導体装置の製造方法である。
【選択図】図6
Description
なお、結晶面および方向を表わす場合に、本来であれば所要の数字の上にバーを付した表現をするべきであるが、表現手段に制約があるため、本明細書においては、所要の数字の上にバーを付す表現の代わりに、所要の数字の後に「−」を付して表現している。
Claims (3)
- 第1導電型の六方晶炭化珪素結晶からなる第1導電型炭化珪素結晶基板と前記第1導電型炭化珪素結晶基板上に形成された第1導電型の六方晶炭化珪素結晶からなる第1導電型炭化珪素結晶層と前記第1導電型炭化珪素結晶層上に形成された第2導電型の六方晶炭化珪素結晶からなる第2導電型炭化珪素結晶層と前記第2導電型炭化珪素結晶層の表面に形成された第1導電型半導体領域とを含む半導体積層基板に対して、前記半導体積層基板の表面から前記第1導電型半導体領域および前記第2導電型炭化珪素結晶層を貫通し、前記第1導電型炭化珪素結晶層を底面とする溝を形成する工程と、
前記溝の少なくとも一部に珪素膜を形成する工程と、
前記珪素膜が形成された前記半導体積層基板を前記珪素膜の溶融温度以上に加熱する工程と、
前記加熱後の珪素膜を除去する工程と、
前記珪素膜の除去後の露出面上にゲート絶縁膜を形成する工程と、
前記ゲート絶縁膜の表面上にゲート電極層を形成する工程と、
を含む、炭化珪素半導体装置の製造方法。 - 前記溝は、前記溝の側面が[11−00]方向に対して平行となるように形成されることを特徴とする、請求項1に記載の炭化珪素半導体装置の製造方法。
- 前記溝は、前記半導体積層基板の表面において各内角が等しい六角形となるように形成されることを特徴とする、請求項1または2に記載の炭化珪素半導体装置の製造方法。
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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JP2006322095A JP4046140B1 (ja) | 2006-11-29 | 2006-11-29 | 炭化珪素半導体装置の製造方法 |
PCT/JP2007/065818 WO2008065782A1 (fr) | 2006-11-29 | 2007-08-13 | Procédé de fabrication d'un dispositif semi-conducteur au carbure de silicium |
EP07792461A EP2088626A4 (en) | 2006-11-29 | 2007-08-13 | METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE WITH SILICON CARBIDE |
US12/516,684 US8043949B2 (en) | 2006-11-29 | 2007-08-13 | Method of manufacturing silicon carbide semiconductor device |
CN2007800398106A CN101529598B (zh) | 2006-11-29 | 2007-08-13 | 碳化硅半导体器件的制造方法 |
CA002669949A CA2669949A1 (en) | 2006-11-29 | 2007-08-13 | Method of manufacturing silicon carbide semiconductor device |
KR1020097007568A KR101223284B1 (ko) | 2006-11-29 | 2007-08-13 | 탄화규소 반도체 장치의 제조 방법 |
TW096131256A TW200828585A (en) | 2006-11-29 | 2007-08-23 | Process for producing silicon carbide semiconductor device |
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JP2006322095A JP4046140B1 (ja) | 2006-11-29 | 2006-11-29 | 炭化珪素半導体装置の製造方法 |
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JP4046140B1 true JP4046140B1 (ja) | 2008-02-13 |
JP2008135653A JP2008135653A (ja) | 2008-06-12 |
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US (1) | US8043949B2 (ja) |
EP (1) | EP2088626A4 (ja) |
JP (1) | JP4046140B1 (ja) |
KR (1) | KR101223284B1 (ja) |
CN (1) | CN101529598B (ja) |
CA (1) | CA2669949A1 (ja) |
TW (1) | TW200828585A (ja) |
WO (1) | WO2008065782A1 (ja) |
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JP2010219109A (ja) * | 2009-03-13 | 2010-09-30 | Sanken Electric Co Ltd | トレンチゲート型半導体装置とその製造方法 |
US8981384B2 (en) * | 2010-08-03 | 2015-03-17 | Sumitomo Electric Industries, Ltd. | Semiconductor device and method for manufacturing same |
JP5707770B2 (ja) * | 2010-08-03 | 2015-04-30 | 住友電気工業株式会社 | 半導体装置およびその製造方法 |
WO2012125898A1 (en) * | 2011-03-17 | 2012-09-20 | Georgia Tech Research Corporation | Patterned graphene structures on silicon carbide |
JP2012209422A (ja) * | 2011-03-30 | 2012-10-25 | Sumitomo Electric Ind Ltd | Igbt |
JP5668576B2 (ja) | 2011-04-01 | 2015-02-12 | 住友電気工業株式会社 | 炭化珪素半導体装置 |
JP5667926B2 (ja) * | 2011-05-12 | 2015-02-12 | 新電元工業株式会社 | 半導体素子 |
JP2013004636A (ja) * | 2011-06-15 | 2013-01-07 | Sumitomo Electric Ind Ltd | 炭化珪素半導体装置およびその製造方法 |
JP5699878B2 (ja) | 2011-09-14 | 2015-04-15 | 住友電気工業株式会社 | 炭化珪素半導体装置およびその製造方法 |
US9018699B2 (en) | 2011-09-22 | 2015-04-28 | Panasonic Intellectual Property Management Co., Ltd. | Silicon carbide semiconductor element and method for fabricating the same |
JP2013069964A (ja) | 2011-09-26 | 2013-04-18 | Sumitomo Electric Ind Ltd | 炭化珪素半導体装置 |
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JP5764046B2 (ja) | 2011-11-21 | 2015-08-12 | 住友電気工業株式会社 | 炭化珪素半導体装置の製造方法 |
JP5870672B2 (ja) * | 2011-12-19 | 2016-03-01 | 住友電気工業株式会社 | 半導体装置 |
JP2013131512A (ja) * | 2011-12-20 | 2013-07-04 | Sumitomo Electric Ind Ltd | 半導体装置およびその製造方法 |
JP2013145770A (ja) | 2012-01-13 | 2013-07-25 | Sumitomo Electric Ind Ltd | 半導体装置およびその製造方法 |
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JP6098447B2 (ja) * | 2013-09-06 | 2017-03-22 | 住友電気工業株式会社 | 炭化珪素半導体装置およびその製造方法 |
JP2015099845A (ja) * | 2013-11-19 | 2015-05-28 | 住友電気工業株式会社 | 半導体装置 |
JP2015156429A (ja) * | 2014-02-20 | 2015-08-27 | 住友電気工業株式会社 | 炭化珪素半導体装置およびその製造方法 |
JP6256148B2 (ja) * | 2014-03-27 | 2018-01-10 | 住友電気工業株式会社 | 炭化珪素半導体装置およびその製造方法 |
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EP1342271B1 (en) * | 2000-12-11 | 2013-11-20 | Cree, Inc. | Method of fabricating a self-aligned bipolar junction transistor in silicon carbide and resulting devices |
JP4029595B2 (ja) * | 2001-10-15 | 2008-01-09 | 株式会社デンソー | SiC半導体装置の製造方法 |
JP4096569B2 (ja) | 2002-01-31 | 2008-06-04 | 株式会社デンソー | 炭化珪素半導体装置とその製造方法 |
CN1251315C (zh) * | 2003-04-15 | 2006-04-12 | 财团法人工业技术研究院 | 碳化硅沟槽式金属氧化物半导体场效应晶体管 |
US7407837B2 (en) * | 2004-01-27 | 2008-08-05 | Fuji Electric Holdings Co., Ltd. | Method of manufacturing silicon carbide semiconductor device |
SE527205C2 (sv) * | 2004-04-14 | 2006-01-17 | Denso Corp | Förfarande för tillverkning av halvledaranordning med kanal i halvledarsubstrat av kiselkarbid |
DE102005017814B4 (de) * | 2004-04-19 | 2016-08-11 | Denso Corporation | Siliziumkarbid-Halbleiterbauelement und Verfahren zu dessen Herstellung |
JP4862254B2 (ja) * | 2004-09-28 | 2012-01-25 | 日産自動車株式会社 | 半導体装置の製造方法 |
JP5228291B2 (ja) * | 2006-07-06 | 2013-07-03 | 日産自動車株式会社 | 半導体装置の製造方法 |
-
2006
- 2006-11-29 JP JP2006322095A patent/JP4046140B1/ja not_active Expired - Fee Related
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2007
- 2007-08-13 KR KR1020097007568A patent/KR101223284B1/ko not_active IP Right Cessation
- 2007-08-13 EP EP07792461A patent/EP2088626A4/en not_active Withdrawn
- 2007-08-13 CN CN2007800398106A patent/CN101529598B/zh not_active Expired - Fee Related
- 2007-08-13 CA CA002669949A patent/CA2669949A1/en not_active Abandoned
- 2007-08-13 WO PCT/JP2007/065818 patent/WO2008065782A1/ja active Application Filing
- 2007-08-13 US US12/516,684 patent/US8043949B2/en not_active Expired - Fee Related
- 2007-08-23 TW TW096131256A patent/TW200828585A/zh unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1056829C (zh) * | 1995-10-20 | 2000-09-27 | 清华大学 | 催化硝化制备硝基氯苯的方法 |
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Publication number | Publication date |
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CN101529598B (zh) | 2012-04-04 |
EP2088626A1 (en) | 2009-08-12 |
US20100062582A1 (en) | 2010-03-11 |
EP2088626A4 (en) | 2010-12-01 |
WO2008065782A1 (fr) | 2008-06-05 |
CN101529598A (zh) | 2009-09-09 |
US8043949B2 (en) | 2011-10-25 |
JP2008135653A (ja) | 2008-06-12 |
CA2669949A1 (en) | 2008-06-05 |
TW200828585A (en) | 2008-07-01 |
KR20090094220A (ko) | 2009-09-04 |
KR101223284B1 (ko) | 2013-01-16 |
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