JP6075458B2 - 半導体装置およびその製造方法 - Google Patents
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- 229910052734 helium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
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Description
2 第2バッファ層
3 第1バッファ層
4 並列pn層
4a n型ドリフト領域
4b p型仕切り領域
5 p型ベース領域
6 pn接合
10a,10b pinダイオード
50,201 超接合MOSFET
101 IGBT
103 コレクタ接合
301 MOSFET
401 ダイオード
1000 インバータ回路
Claims (11)
- 第1導電型のドレイン層の第1主面上に垂直方向に伸びる相互に平行な複数のpn接合を有し、該pn接合に挟まれる第1導電型のドリフト領域と第2導電型の仕切り領域とが交互に接して並ぶ並列pn層と、前記並列pn層の第1主面側にMOSゲート構造を有し、前記並列pn層と前記ドレイン層との間に第1導電型の第1バッファ層が設けられ、前記第1バッファ層の不純物濃度は前記ドリフト領域より低濃度である半導体装置において、
前記並列pn層の第1主面側の表面層に、前記仕切り領域に接して選択的に設けられ、前記MOSゲート構造を構成する第2導電型のベース領域を有し、
前記並列pn層内の前記仕切り領域の少なくとも一つが前記ドリフト領域の不純物濃度より低濃度の第1導電型領域に置き換えられていることを特徴とする半導体装置。 - 前記第1バッファ層と前記ドレイン層との間に前記ドリフト領域より不純物濃度が高濃度の第1導電型の第2バッファ層を備え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2バッファ層よりも前記並列pn層の方がキャリアライフタイムが短いことを特徴とする請求項2に記載の半導体装置。
- 前記第2バッファ層よりも前記第1バッファ層の方がキャリアライフタイムが短いことを特徴とする請求項2または3に記載の半導体装置。
- 前記第2バッファ層はライフタイムを調整されていないことを特徴とする請求項3または4に記載の半導体装置。
- 前記ベース領域、前記第1導電型領域、前記第1バッファ層および前記ドレイン層からなるpinダイオードを備えることを特徴とする請求項1に記載の半導体装置。
- 前記ベース領域、前記第1導電型領域、前記第1バッファ層、前記第2バッファ層および前記ドレイン層からなるpinダイオードを備えることを特徴とする請求項2〜5のいずれか一つに記載の半導体装置。
- 前記ベース領域は、前記仕切り領域の表面領域に、当該仕切り領域に隣接する前記ドリフト領域にわたって設けられていることを特徴とする請求項1〜7のいずれか一つに記載の半導体装置。
- 第1導電型のドレイン層の第1主面上に設けられたドリフト領域より不純物濃度が高濃度の第1導電型の高濃度バッファ層と、前記高濃度バッファ層上に設けられた、前記ドリフト領域の不純物濃度より低濃度の第1導電型の低濃度バッファ層と、前記低濃度バッファ層上に設けられた、第1導電型のドリフト領域と第2導電型の仕切り領域とを交互に繰り返し配置した並列pn層と、を備え、前記仕切り領域の少なくとも一つが前記ドリフト領域の不純物濃度より低濃度の第1導電型領域に置き換えられている半導体装置の製造方法であって、
前記並列pn層のキャリアライフタイムを重金属の添加または荷電粒子の照射により前記高濃度バッファ層より短くする工程を含むことを特徴とする半導体装置の製造方法。 - 第1導電型のドレイン層の第1主面上に、第1導電型のドリフト領域と第2導電型の仕切り領域とを交互に繰り返し配置した並列pn層を備え、前記仕切り領域の少なくとも一つが前記ドリフト領域の不純物濃度より低濃度の第1導電型領域に置き換えられている半導体装置の製造方法であって、
前記ドレイン層の第1主面上に、前記ドリフト領域より不純物濃度が高濃度の第1導電型の高濃度バッファ層を形成する工程と、
前記高濃度バッファ層上に、前記ドリフト領域の不純物濃度より低濃度の第1導電型の低濃度バッファ層を形成する工程と、
前記低濃度バッファ層上に前記並列pn層を形成する工程と、
前記並列pn層側から重金属の添加または荷電粒子の照射を行うことにより、前記並列pn層のキャリアライフタイムを前記高濃度バッファ層のキャリアライフタイムより短くする工程と、
を含むことを特徴とする半導体装置の製造方法。 - 第1導電型のドレイン層の第1主面上に、第1導電型のドリフト領域と第2導電型の仕切り領域とを交互に繰り返し配置した並列pn層を備え、前記仕切り領域の少なくとも一つが前記ドリフト領域の不純物濃度より低濃度の第1導電型領域に置き換えられている半導体装置の製造方法であって、
半導体基板のおもて面側に前記並列pn層を形成する工程と、
前記半導体基板のおもて面側において、前記並列pn層上に素子構造を形成する工程と、
前記半導体基板の裏面側に、前記ドリフト領域の不純物濃度より低濃度の第1導電型の低濃度バッファ層を形成する工程と、
前記半導体基板の裏面側の、前記低濃度バッファ層よりも浅い位置に、前記ドリフト領域より不純物濃度が高濃度の第1導電型の高濃度バッファ層を形成する工程と、
前記高濃度バッファ層側から重金属の添加または荷電粒子の照射を行うことにより、前記並列pn層のキャリアライフタイムを前記高濃度バッファ層のキャリアライフタイムより短くする工程と、
を含むことを特徴とする半導体装置の製造方法。
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Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
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DE112015000206T5 (de) | 2014-10-03 | 2016-08-25 | Fuji Electric Co., Ltd. | Halbleitervorrichtung und Verfahren zum Herstellen einer Halbleitervorrichtung |
JP6766522B2 (ja) * | 2016-08-23 | 2020-10-14 | 富士電機株式会社 | 半導体装置および半導体装置の製造方法 |
US11189689B2 (en) | 2017-10-05 | 2021-11-30 | Mitsubishi Electric Corporation | Semiconductor device including an active region that includes a switchable current path |
DE112019000863T5 (de) | 2018-02-19 | 2020-11-05 | Fuji Electric Co., Ltd. | Halbleitervorrichtung |
CN112652661A (zh) * | 2019-10-10 | 2021-04-13 | 珠海格力电器股份有限公司 | 一种晶体管及其制备方法 |
JP7257984B2 (ja) * | 2020-03-24 | 2023-04-14 | 株式会社東芝 | 半導体装置及びその製造方法 |
US11990543B2 (en) * | 2020-12-02 | 2024-05-21 | Wolfspeed, Inc. | Power transistor with soft recovery body diode |
US11769827B2 (en) | 2020-12-02 | 2023-09-26 | Wolfspeed, Inc. | Power transistor with soft recovery body diode |
CN113517333A (zh) * | 2021-06-07 | 2021-10-19 | 西安电子科技大学 | 一种具有超结结构的mosfet器件及其制备方法 |
CN113540211A (zh) * | 2021-06-18 | 2021-10-22 | 西安电子科技大学 | 一种沟槽超级结功率mosfet器件及其制备方法 |
CN113540210A (zh) * | 2021-06-18 | 2021-10-22 | 西安电子科技大学 | 一种新的超级结器件及其制备方法 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003101022A (ja) * | 2001-09-27 | 2003-04-04 | Toshiba Corp | 電力用半導体素子 |
JP2004022716A (ja) * | 2002-06-14 | 2004-01-22 | Fuji Electric Holdings Co Ltd | 半導体素子 |
JP2008182054A (ja) * | 2007-01-25 | 2008-08-07 | Toshiba Corp | 半導体装置 |
JP2008258313A (ja) * | 2007-04-03 | 2008-10-23 | Denso Corp | 半導体装置およびその製造方法 |
JP2012160753A (ja) * | 2012-04-13 | 2012-08-23 | Denso Corp | 半導体装置の製造方法 |
Family Cites Families (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07226405A (ja) * | 1994-12-19 | 1995-08-22 | Meidensha Corp | 半導体デバイスの製造方法 |
JP3507732B2 (ja) | 1999-09-30 | 2004-03-15 | 株式会社東芝 | 半導体装置 |
JP4635304B2 (ja) * | 2000-07-12 | 2011-02-23 | 富士電機システムズ株式会社 | 双方向超接合半導体素子およびその製造方法 |
JP4764987B2 (ja) * | 2000-09-05 | 2011-09-07 | 富士電機株式会社 | 超接合半導体素子 |
JP3899231B2 (ja) * | 2000-12-18 | 2007-03-28 | 株式会社豊田中央研究所 | 半導体装置 |
EP1267415A3 (en) | 2001-06-11 | 2009-04-15 | Kabushiki Kaisha Toshiba | Power semiconductor device having resurf layer |
JP2004221487A (ja) * | 2003-01-17 | 2004-08-05 | Sharp Corp | 半導体装置の製造方法及び半導体装置 |
US20050242411A1 (en) * | 2004-04-29 | 2005-11-03 | Hsuan Tso | [superjunction schottky device and fabrication thereof] |
JP4832731B2 (ja) | 2004-07-07 | 2011-12-07 | 株式会社東芝 | 電力用半導体装置 |
US7345296B2 (en) * | 2004-09-16 | 2008-03-18 | Atomate Corporation | Nanotube transistor and rectifying devices |
JP2006147661A (ja) * | 2004-11-16 | 2006-06-08 | Matsushita Electric Ind Co Ltd | 受光装置とその製造方法およびカメラ |
JP5087828B2 (ja) | 2005-08-26 | 2012-12-05 | 富士電機株式会社 | 半導体装置の製造方法 |
KR100723516B1 (ko) * | 2005-12-13 | 2007-05-30 | 삼성전자주식회사 | 색 결정층을 구비하는 컬러 필터층, 이를 구비하는 영상감지 소자 및 컬러 필터층의 형성 방법 |
US7592668B2 (en) * | 2006-03-30 | 2009-09-22 | Fairchild Semiconductor Corporation | Charge balance techniques for power devices |
US7598517B2 (en) * | 2006-08-25 | 2009-10-06 | Freescale Semiconductor, Inc. | Superjunction trench device and method |
JP4637196B2 (ja) * | 2007-03-16 | 2011-02-23 | 富士フイルム株式会社 | 固体撮像素子 |
US8928077B2 (en) * | 2007-09-21 | 2015-01-06 | Fairchild Semiconductor Corporation | Superjunction structures for power devices |
JP5103118B2 (ja) * | 2007-09-27 | 2012-12-19 | オンセミコンダクター・トレーディング・リミテッド | 半導体ウエハおよびその製造方法 |
JP5723595B2 (ja) * | 2008-09-01 | 2015-05-27 | ローム株式会社 | 半導体装置およびその製造方法 |
JP4770928B2 (ja) * | 2009-01-13 | 2011-09-14 | ソニー株式会社 | 光学素子および固体撮像素子 |
US7892924B1 (en) * | 2009-12-02 | 2011-02-22 | Alpha And Omega Semiconductor, Inc. | Method for making a charge balanced multi-nano shell drift region for superjunction semiconductor device |
US8525260B2 (en) * | 2010-03-19 | 2013-09-03 | Monolithic Power Systems, Inc. | Super junction device with deep trench and implant |
US10256325B2 (en) * | 2012-11-08 | 2019-04-09 | Infineon Technologies Austria Ag | Radiation-hardened power semiconductor devices and methods of forming them |
-
2014
- 2014-07-11 WO PCT/JP2014/068632 patent/WO2015040938A1/ja active Application Filing
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003101022A (ja) * | 2001-09-27 | 2003-04-04 | Toshiba Corp | 電力用半導体素子 |
JP2004022716A (ja) * | 2002-06-14 | 2004-01-22 | Fuji Electric Holdings Co Ltd | 半導体素子 |
JP2008182054A (ja) * | 2007-01-25 | 2008-08-07 | Toshiba Corp | 半導体装置 |
JP2008258313A (ja) * | 2007-04-03 | 2008-10-23 | Denso Corp | 半導体装置およびその製造方法 |
JP2012160753A (ja) * | 2012-04-13 | 2012-08-23 | Denso Corp | 半導体装置の製造方法 |
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