JP7028547B2 - 化合物半導体装置の製造方法 - Google Patents
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Description
n型導電層のN面にドレイン電極およびソース電極のコンタクトをとることにより、コンタクト抵抗成分ひいてはアクセス抵抗を非常に小さくすることができ、高速なトランジスタを形成できる。またn型導電層をGaNエピ基板にあらかじめ形成しておくことにより、n型導電層の再成長プロセスが不要となるため、化合物半導体装置の製造コストをさらに下げることができる。
n型導電層のN面にドレイン電極およびソース電極のコンタクトをとることにより、コンタクト抵抗成分ひいてはアクセス抵抗を非常に小さくすることができ、高速なトランジスタを形成できる。またn型導電層をGaNエピ基板にあらかじめ形成しておくことにより、n型導電層の再成長プロセスが不要となるため、化合物半導体装置の製造コストをさらに下げることができる。
Claims (8)
- n型導電層、電子走行層となる第1GaN層、ノンドープの電子供給層、第2GaN層がGa極性方向に順に積層されてなるGaNエピ基板の前記n型導電層側にトランジスタを形成し、前記n型導電層に対して、前記トランジスタのドレインおよびソースのコンタクトを取ることを特徴とする化合物半導体装置の製造方法。
- 支持基板が、前記GaNエピ基板の前記第2GaN層と対向して接合されることを特徴とする請求項1に記載の製造方法。
- 前記GaNエピ基板の前記第2GaN層は、前記GaNエピ基板の結晶成長時に基体となる成長用基板および前記成長用基板上に形成されるバッファ層を除去することにより露出されることを特徴とする請求項1または2に記載の製造方法。
- 支持基板を、成長用基板上に、バッファ層、n型導電層、電子走行層となるノンドープの第1GaN層、電子供給層、第2GaN層をGa極性方向に積層してなるGaNエピ基板の前記第2GaN層と対向して接合するステップと、
前記GaNエピ基板の前記成長用基板および前記バッファ層を除去し、前記GaNエピ基板の前記n型導電層のN面を露出させるステップと、
前記n型導電層の前記N面に対してドレインおよびソースのコンタクトをとり、トランジスタを形成するステップと、
を備えることを特徴とする化合物半導体装置の製造方法。 - 前記成長用基板はSi基板であることを特徴とする請求項4に記載の製造方法。
- 前記成長用基板は、研磨およびウェットエッチングの少なくとも一方により除去されることを特徴とする請求項4または5のいずれかに記載の製造方法。
- 前記バッファ層は、ドライエッチングにより除去されることを特徴とする請求項4から6のいずれかに記載の製造方法。
- 前記支持基板は、フレキシブル基板、AlN基板、SiC基板、グラファイト基板、Cu基板、Si基板のいずれかを含むことを特徴とする請求項4から7のいずれかに記載の製造方法。
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JP2016121845A JP7028547B2 (ja) | 2016-06-20 | 2016-06-20 | 化合物半導体装置の製造方法 |
TW106115072A TWI770023B (zh) | 2016-06-20 | 2017-05-08 | 化合物半導體裝置及其製造方法 |
US15/591,697 US10115802B2 (en) | 2016-06-20 | 2017-05-10 | Manufacturing method for compound semiconductor device |
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JP7052503B2 (ja) * | 2018-04-05 | 2022-04-12 | 日本電信電話株式会社 | トランジスタの製造方法 |
US10636875B1 (en) * | 2019-01-21 | 2020-04-28 | Northrop Grumman Systems Corporation | Localized tunneling enhancement for semiconductor devices |
CN110310981B (zh) * | 2019-07-08 | 2021-04-02 | 电子科技大学 | 氮面增强型复合势垒层氮化镓基异质结场效应管 |
JP7382804B2 (ja) * | 2019-11-22 | 2023-11-17 | 三菱電機株式会社 | 半導体装置、半導体装置の製造方法、及び、電界効果型トランジスタ |
CN112154544B (zh) * | 2019-12-20 | 2024-03-15 | 电子科技大学 | 一种柔性微波功率晶体管及其制备方法 |
CN113437145B (zh) * | 2021-06-08 | 2024-10-18 | 苏州奥谱毫通电子科技有限公司 | 一种iii族氮化物晶体管的制备方法及晶体管 |
CN113471284A (zh) * | 2021-07-01 | 2021-10-01 | 广东省科学院半导体研究所 | N极性GaN晶体管结构的制备方法和半导体结构 |
CN114121657B (zh) * | 2021-11-25 | 2023-10-31 | 深圳大学 | 一种氮化镓垂直结型场效应管的制备方法 |
CN114023646B (zh) * | 2022-01-05 | 2022-04-22 | 季华实验室 | 一种高阻值GaN基HEMT器件及其制备方法 |
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JP2000277724A (ja) | 1999-03-26 | 2000-10-06 | Nagoya Kogyo Univ | 電界効果トランジスタとそれを備えた半導体装置及びその製造方法 |
JP2012513113A (ja) | 2008-12-19 | 2012-06-07 | ソイテック | 歪み処理複合半導体基板及びそれを形成する方法 |
JP2012156332A (ja) | 2011-01-26 | 2012-08-16 | Toshiba Corp | 半導体素子 |
JP2012169544A (ja) | 2011-02-16 | 2012-09-06 | Fujitsu Ltd | 半導体装置、電源装置、増幅器及び半導体装置の製造方法 |
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