JP5475535B2 - 横型hemtおよび横型hemtの製造方法 - Google Patents
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- H10D30/471—High electron mobility transistors [HEMT] or high hole mobility transistors [HHMT]
- H10D30/475—High electron mobility transistors [HEMT] or high hole mobility transistors [HHMT] having wider bandgap layer formed on top of lower bandgap active layer, e.g. undoped barrier HEMTs such as i-AlGaN/GaN HEMTs
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- 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
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- 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
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- H10D62/17—Semiconductor regions connected to electrodes not carrying current to be rectified, amplified or switched, e.g. channel regions
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- H10D64/20—Electrodes characterised by their shapes, relative sizes or dispositions
- H10D64/23—Electrodes carrying the current to be rectified, amplified, oscillated or switched, e.g. sources, drains, anodes or cathodes
- H10D64/251—Source or drain electrodes for field-effect devices
- H10D64/256—Source or drain electrodes for field-effect devices for lateral devices wherein the source or drain electrodes are recessed in semiconductor bodies
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- 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
- H10D62/85—Semiconductor bodies, or regions thereof, of devices having potential barriers characterised by the materials being Group III-V materials, e.g. GaAs
- H10D62/8503—Nitride Group III-V materials, e.g. AlN or GaN
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- Insulated Gate Type Field-Effect Transistor (AREA)
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Description
Claims (17)
- 基板(10)と、
第1導電型の半導体物質を有し、少なくとも部分的に上記基板の上に配置された第1層(11)と、
半導体物質を有し、少なくとも部分的に上記第1層(11)の上に配置された第2層(12)と、
上記第1導電型に対して相補的な第2導電型の半導体物質を有し、上記第1層(11)の中に配置された第3層(13)とを有する、横型HEMTであって、
上記第3層(13)は、完全に上記第1層(11)の中に配置され、
上記横型HEMTは、第1電極(14)、第2電極(15)、およびゲート電極(16)を有し、
上記第1電極(14)は、上記第2層(12)から上記第3層(13)まで垂直方向に延び、上記第2電極(15)は、上記第2層(12)から部分的に上記基板(10)の中まで垂直方向に延び、
上記第1層(11)は、GaNを有し、
2次元電子ガスが、上記第1層(11)と上記第2層(12)との間の境界面に形成される、横型HEMT。 - 上記第2層(12)は、AlGaNを有する、請求項1に記載の横型HEMT。
- 上記第3層(13)は、GaNを有する、請求項1または2に記載の横型HEMT。
- 上記基板(10)は、Siを有する、請求項1ないし3の何れか1項に記載の横型HEMT。
- 上記基板(10)は、SiCを有する、請求項1ないし3の何れか1項に記載の横型HEMT。
- 上記基板(10)は、Al2O3を有する、請求項1ないし3の何れか1項に記載の横型HEMT。
- 上記第2層(12)は、ドープされていない、請求項1ないし6の何れか1項に記載の横型HEMT。
- 上記横型HEMTは、バッファ層(17)を有し、上記バッファ層(17)は、上記基板(10)と上記第1層(11)との間に配置されている、請求項1ないし7の何れか1項に記載の横型HEMT。
- 上記バッファ層(17)は、AlN、GaN、またはAlGaNを有する、請求項8に記載の横型HEMT。
- 上記横型HEMTは、パッシベーション層(18)を有し、上記パッシベーション層(18)は、少なくとも部分的に上記第2層(12)の上に配置されている、請求項1ないし9の何れか1項に記載の横型HEMT。
- 上記横型HEMTは、絶縁層(19)を有し、上記絶縁層(19)は、少なくとも部分的に上記パッシベーション層(18)の上に配置されている、請求項10に記載の横型HEMT。
- 上記第1電極(14)は、上記第1層(11)の上、および上記第3層(13)の上に配置され、上記第1層(11)、上記第2層(12)、および上記第3層(13)と接触している、請求項1ないし11の何れか1項に記載の横型HEMT。
- 横型HEMTの製造方法であって、
基板(10)、および、第1導電型の半導体物質を有し、少なくとも部分的に上記基板(10)の上に配置された、GaNを有する第1層(11)を形成する工程と、
構造化されたマスク(23)を、上記第1層(11)上に塗布する工程と、
上記第1導電型に対して相補的な第2導電型の半導体物質を有する第3層(13)を、上記第1層(11)の上で成長させる工程と、
上記第3層(13)の部分的除去を行う工程と、
上記マスク(23)の除去を行う工程と、
上記第1導電型の半導体物質であるGaNを有する第4層(11’)を上記第1層(11)および上記第3層(13)の上で成長させる工程と、
半導体物質を有する第2層(12)を上記第4層(11’)の上で成長させる工程と、
パッシベーション層(18)を、少なくとも部分的に上記第4層(11’)上に設ける工程と、
上記第2層(12)から上記第3層(13)まで垂直方向に延びる第1電極(14)、上記第2層(12)から部分的に上記基板(10)の中まで垂直方向に延びる第2電極(15)、および、ゲート電極(16)を形成する工程とを有し、
上記第2層(12)は、上記第4層(11’)との間の境界面に2次元電子ガスを形成するものである、方法。 - 上記第3層(13)の部分的除去は、CMP処理(化学機械研磨)によって行われる、請求項13に記載の方法。
- バッファ層(17)は、上記基板(10)と上記第1層(11)との間に設けられる、請求項13または14に記載の方法。
- 絶縁層(19)は、少なくとも部分的に上記パッシベーション層(18)の上に設けられる、請求項13ないし15の何れか1項に記載の方法。
- 上記第2層(12)は、ドープされない、請求項13ないし16の何れか1項に記載の方法。
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DE102009018054.0 | 2009-04-21 | ||
DE102009018054.0A DE102009018054B4 (de) | 2009-04-21 | 2009-04-21 | Lateraler HEMT und Verfahren zur Herstellung eines lateralen HEMT |
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JP2013079756A Division JP5678119B2 (ja) | 2009-04-21 | 2013-04-05 | 横型hemt |
JP2013079755A Division JP5766740B2 (ja) | 2009-04-21 | 2013-04-05 | 横型hemt |
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JP2008218846A (ja) * | 2007-03-06 | 2008-09-18 | Rohm Co Ltd | 窒化物半導体素子および窒化物半導体素子の製造方法 |
US8525224B2 (en) * | 2007-03-29 | 2013-09-03 | International Rectifier Corporation | III-nitride power semiconductor device |
JP2008258419A (ja) | 2007-04-05 | 2008-10-23 | Toshiba Corp | 窒化物半導体素子 |
JP2009004397A (ja) | 2007-06-19 | 2009-01-08 | Nec Electronics Corp | 半導体装置の製造方法 |
JP5319084B2 (ja) * | 2007-06-19 | 2013-10-16 | ルネサスエレクトロニクス株式会社 | 半導体装置 |
JP4478175B2 (ja) | 2007-06-26 | 2010-06-09 | 株式会社東芝 | 半導体装置 |
JP2009164158A (ja) | 2007-12-28 | 2009-07-23 | Panasonic Corp | 半導体装置及びその製造方法 |
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US20100264462A1 (en) | 2010-10-21 |
US8884335B2 (en) | 2014-11-11 |
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