JP2017163082A - 高電子移動度トランジスタ、及び高電子移動度トランジスタの製造方法 - Google Patents
高電子移動度トランジスタ、及び高電子移動度トランジスタの製造方法 Download PDFInfo
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Abstract
Description
Claims (7)
- 主面を有する基板と、
前記主面上に設けられ、メサ構造を有する電子走行層と、
前記メサ構造上に設けられ、前記電子走行層よりも大きいバンドギャップを有する障壁層と、
前記電子走行層上に設けられ、前記メサ構造及び前記障壁層の側面にそれぞれ接する二つの高濃度n型半導体領域と、
一方の前記高濃度n型半導体領域上に設けられたソース電極と、
他方の前記高濃度n型半導体領域上に設けられたドレイン電極と、
前記障壁層上に設けられたゲート電極と、
を備え、
前記障壁層の表面の水平位置は、前記高濃度n型半導体領域の各表面の水平位置よりも低く、
各高濃度n型半導体領域の前記表面のうち前記障壁層に隣接する一部と、前記障壁層の前記表面との成す角が135°以上160°以下の範囲内にある、高電子移動度トランジスタ。 - 各高濃度n型半導体領域がn型のZnO系化合物半導体領域である、請求項1に記載の高電子移動度トランジスタ。
- 前記基板がGaN基板、SiC基板、Si基板、及びサファイア基板のうち何れかであり、前記電子走行層がi型GaN層であり、前記障壁層がi型InAlN層である、請求項1または2に記載の高電子移動度トランジスタ。
- 電子走行層、及び前記電子走行層よりも大きいバンドギャップを有する障壁層を基板の主面上に順に成長させる工程と、
前記障壁層及び前記電子走行層をエッチングすることによりメサ構造を形成する工程と、
前記主面上に高濃度n型半導体層を形成する工程と、
前記メサ構造上に開口を有するマスクを前記高濃度n型半導体層上に形成する工程と、
前記マスクの前記開口を通じて前記メサ構造上の前記高濃度n型半導体層にウェットエッチングを施すことにより、高濃度n型半導体領域を形成する工程と、
前記メサ構造上にゲート電極を形成する工程と、
を含む、高電子移動度トランジスタの製造方法。 - 前記ゲート電極を形成する工程において、前記マスクを利用して前記ゲート電極を形成する、請求項4に記載の高電子移動度トランジスタの製造方法。
- 前記高濃度n型半導体層がn型のZnO系化合物半導体層であり、
前記高濃度n型半導体領域を形成する工程において、エッチャントとして希釈クエン酸、希釈アコニット酸、及び酢酸のうち少なくとも一つを用いる、請求項4または5に記載の高電子移動度トランジスタの製造方法。 - 前記電子走行層がi型GaN層であり、前記障壁層がi型InAlN層であり、
Cl2及びBCl3のうち少なくとも一方を用いたドライエッチングにより前記メサ構造を形成する、請求項4〜6のいずれか一項に記載の高電子移動度トランジスタの製造方法。
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| US15/456,226 US10147811B2 (en) | 2016-03-11 | 2017-03-10 | Process of forming a high electron mobility transistor (HEMT) |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPWO2021029183A1 (ja) * | 2019-08-09 | 2021-02-18 | ||
| JP2021027165A (ja) * | 2019-08-05 | 2021-02-22 | 富士通株式会社 | 半導体装置、半導体装置の製造方法及び電子装置 |
| JP2022048690A (ja) * | 2020-09-15 | 2022-03-28 | 住友電気工業株式会社 | 半導体装置 |
| JP2024502520A (ja) * | 2021-12-13 | 2024-01-22 | 中国科学院蘇州納米技術与納米▲ファン▼生研究所 | 高電子移動度トランジスタ構造およびその製造方法並びに用途 |
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| US10388753B1 (en) * | 2017-03-31 | 2019-08-20 | National Technology & Engineering Solutions Of Sandia, Llc | Regrowth method for fabricating wide-bandgap transistors, and devices made thereby |
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| JP7013710B2 (ja) * | 2017-08-07 | 2022-02-01 | 住友電気工業株式会社 | 窒化物半導体トランジスタの製造方法 |
| JP6977449B2 (ja) | 2017-09-27 | 2021-12-08 | 住友電気工業株式会社 | 電界効果トランジスタの製造方法及び電界効果トランジスタ |
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| CN110112207B (zh) * | 2019-05-20 | 2020-05-05 | 中山大学 | 一种氧化镓基混合PiN肖特基二极管及其制备方法 |
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| JP2021027165A (ja) * | 2019-08-05 | 2021-02-22 | 富士通株式会社 | 半導体装置、半導体装置の製造方法及び電子装置 |
| JPWO2021029183A1 (ja) * | 2019-08-09 | 2021-02-18 | ||
| JP2022048690A (ja) * | 2020-09-15 | 2022-03-28 | 住友電気工業株式会社 | 半導体装置 |
| JP7528664B2 (ja) | 2020-09-15 | 2024-08-06 | 住友電気工業株式会社 | 半導体装置 |
| JP2024502520A (ja) * | 2021-12-13 | 2024-01-22 | 中国科学院蘇州納米技術与納米▲ファン▼生研究所 | 高電子移動度トランジスタ構造およびその製造方法並びに用途 |
| JP7638024B2 (ja) | 2021-12-13 | 2025-03-03 | 中国科学院蘇州納米技術与納米▲ファン▼生研究所 | 高電子移動度トランジスタ構造およびその製造方法並びに用途 |
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| JP6690320B2 (ja) | 2020-04-28 |
| US10147811B2 (en) | 2018-12-04 |
| US20170263743A1 (en) | 2017-09-14 |
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