JP7057473B1 - 半導体装置および半導体装置の製造方法 - Google Patents
半導体装置および半導体装置の製造方法 Download PDFInfo
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- 229910002601 GaN Inorganic materials 0.000 description 25
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000004544 sputter deposition Methods 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- WGTYBPLFGIVFAS-UHFFFAOYSA-M tetramethylammonium hydroxide Chemical compound [OH-].C[N+](C)(C)C WGTYBPLFGIVFAS-UHFFFAOYSA-M 0.000 description 6
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- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- SWXQKHHHCFXQJF-UHFFFAOYSA-N azane;hydrogen peroxide Chemical compound [NH4+].[O-]O SWXQKHHHCFXQJF-UHFFFAOYSA-N 0.000 description 2
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- 229910052726 zirconium Inorganic materials 0.000 description 2
- -1 AlGaN Chemical compound 0.000 description 1
- 229910017083 AlN Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 1
- 229910003923 SiC 4 Inorganic materials 0.000 description 1
- 229910003910 SiCl4 Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910004166 TaN Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
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- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 229910003465 moissanite Inorganic materials 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
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- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- FDNAPBUWERUEDA-UHFFFAOYSA-N silicon tetrachloride Chemical compound Cl[Si](Cl)(Cl)Cl FDNAPBUWERUEDA-UHFFFAOYSA-N 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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Abstract
Description
まず、実施の形態に係る半導体装置について、図1、図2、および、図3を用いて説明する。
以上、本開示に係る半導体装置について、実施の形態に基づいて説明したが、本開示は、上記実施の形態に限定されるものではない。
101、1101 基板
102、1102 バッファ層
103 チャネル層
1103A GaN層
104 バリア層
104A、1104A AlGaN層
105、1105 2次元電子ガス層
106、1106 リセス
107 ゲート電極
108、1108 オーミック電極
108S ソース電極
108D ドレイン電極
109 第1位置
110 第1傾斜面
111 第2傾斜面
112 第3傾斜面
114 第1交差線
115 第2位置
115A 凹部の第2位置
116 第2交差線
117 凹部
118 半導体結晶の向き
119、1119 AlN層
120 Al拡散層
121 絶縁層
122、1122 高抵抗層
123 転位
124 第3位置
125 第3交差線
126 第4位置
127 レジスト
Claims (19)
- 基板と、
前記基板の上に設けられたAlを含まないIII族窒化物のチャネル層と、
前記チャネル層の上に設けられたAlを含むIII族窒化物のバリア層と、
前記バリア層に接合されたゲート電極と、
前記チャネル層と前記バリア層とからなる積層半導体の表面から少なくとも前記バリア層の一部を除去するように設けられたリセスと、
前記リセス内に設けられ、前記チャネル層に発生する2次元電子ガス層にオーミック接続されたオーミック電極と、を有し、
前記基板表面と直交する第1方向における前記バリア層のAl組成率分布は第1位置で極大点を有し、
前記第1方向において、
前記第1位置を含み前記オーミック電極と接する前記バリア層の第1傾斜面と、
前記第1傾斜面の下方で前記第1傾斜面と第1交差線で交差し、前記オーミック電極と接する前記バリア層の第2傾斜面と、を有し、
前記第2傾斜面の前記基板表面に対する角度は、前記第1傾斜面の前記基板表面に対する角度より小さく、
前記第1方向における前記第1交差線の位置である第2位置は前記第1位置より下方である
半導体装置。 - 前記第1位置から前記第2位置までの距離は0.5nmより大きく4nm以下である
請求項1に記載の半導体装置。 - 前記基板の平面視において、
前記第1交差線は、前記第1傾斜面と前記第2傾斜面とが並ぶ第2方向において、前記第1傾斜面側に凹んだ3つ以上の凹部を有し、
前記第1交差線の延伸方向である第3方向において、前記3つ以上の凹部は不規則に並んでいる
請求項1に記載の半導体装置。 - 基板と、
前記基板の上に設けられたAlを含まないIII族窒化物のチャネル層と、
前記チャネル層の上に設けられたAlを含むIII族窒化物のバリア層と、
前記バリア層に接合されたゲート電極と、
前記チャネル層と前記バリア層とからなる積層半導体の表面から少なくとも前記バリア層の一部を除去するように設けられたリセスと、
前記リセス内に設けられ、前記チャネル層に発生する2次元電子ガス層にオーミック接続されたオーミック電極と、を有し、
前記基板表面と直交する第1方向における前記バリア層のAl組成率分布は第1位置で極大点を有し、
前記第1方向において、
前記第1位置を含み前記オーミック電極と接する前記バリア層の第1傾斜面と、
前記第1傾斜面の下方で前記第1傾斜面と第1交差線で交差し、前記オーミック電極と接する前記バリア層の第2傾斜面と、を有し、
前記基板の平面視において、
前記第1交差線は、前記第1傾斜面と前記第2傾斜面とが並ぶ第2方向において、前記第2傾斜面側に凹んだ3つ以上の凹部を有し、
前記第1交差線の延伸方向である第3方向において、前記3つ以上の凹部は不規則に並んでいる
半導体装置。 - 前記3つ以上の凹部それぞれにおける、前記第2傾斜面の前記基板表面に対する角度は90度未満である
請求項3または請求項4に記載の半導体装置。 - 前記3つ以上の凹部それぞれにおける前記第1交差線は曲線を含む
請求項3または請求項4に記載の半導体装置。 - 前記3つ以上の凹部それぞれの深さは、前記第2方向において、10nm以上40nm以下である
請求項3または請求項4に記載の半導体装置。 - 前記バリア層はAlN層を含み、
前記第1方向において、前記第1位置は前記AlN層の厚さの範囲内である
請求項1または請求項4に記載の半導体装置。 - 前記第1位置における前記バリア層のAl組成率は90%以上である
請求項1または請求項4に記載の半導体装置。 - 前記第1方向において、前記第1位置と前記バリア層の底面位置との間の距離は、前記バリア層の厚さの10%以下である
請求項1または請求項4に記載の半導体装置。 - さらに、前記第2傾斜面の下方で前記第2傾斜面と第2交差線で交差し、前記オーミック電極と接する前記チャネル層の第3傾斜面を有し、
前記第2傾斜面の前記基板表面に対する角度は、前記第3傾斜面の前記基板表面に対する角度より小さい
請求項1または請求項4に記載の半導体装置。 - さらに、前記第2傾斜面の下方で前記第2傾斜面と第2交差線で交差し、前記オーミック電極と接する前記チャネル層の第3傾斜面を有し、
前記第3傾斜面の前記基板表面に対する角度は、前記第1傾斜面の前記基板表面に対する角度より小さい
請求項1または請求項4に記載の半導体装置。 - 前記第1傾斜面の前記基板表面に対する角度は90度未満である
請求項1または請求項4に記載の半導体装置。 - 前記第2傾斜面は前記バリア層を構成する半導体結晶の半極性面である
請求項1または請求項4に記載の半導体装置。 - 前記第2傾斜面の前記基板表面に対する角度は5度以下である
請求項1または請求項4に記載の半導体装置。 - 前記第1方向において、前記第1位置と前記リセス底面位置との距離は、1nm以上10nm以下である
請求項1または請求項4に記載の半導体装置。 - 前記チャネル層を構成する半導体結晶の<0001>方向は前記第1方向である
請求項1または請求項4に記載の半導体装置。 - 前記基板の平面視における前記ゲート電極の延伸方向は、前記チャネル層を構成する半導体結晶の<11-20>方向である
請求項1または請求項4に記載の半導体装置。 - 基板上にIII族窒化物のチャネル層を形成する工程と、
前記チャネル層の上に前記チャネル層のバンドギャップより大きいIII族窒化物のバリア層を形成する工程と、
前記バリア層の上に絶縁層を形成する工程と、
前記絶縁層の上に開口部が設けられたマスクを形成する工程と、
前記マスクを用いて前記開口部により露出している領域の前記絶縁層の全部と前記マスクの側面に対して前記絶縁層の側面が前記マスクの内側に後退するように除去してサイドエッチを形成する工程と、
前記マスクを用いてドライエッチングで前記バリア層と前記チャネル層の少なくとも一部を除去してリセスを形成する工程と、
前記マスクを除去する工程と、
前記リセスと前記絶縁層の一部を覆うようにオーミック電極を形成する工程と、
前記オーミック電極を熱処理する工程と、を有し、
前記サイドエッチはウェットエッチで形成する
半導体装置の製造方法。
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006120694A (ja) * | 2004-10-19 | 2006-05-11 | Oki Electric Ind Co Ltd | 半導体装置及びその製造方法 |
JP2007158149A (ja) * | 2005-12-07 | 2007-06-21 | Sharp Corp | 半導体装置 |
WO2010021099A1 (ja) * | 2008-08-22 | 2010-02-25 | パナソニック株式会社 | 電界効果トランジスタ |
JP2011091200A (ja) * | 2009-10-22 | 2011-05-06 | Sanken Electric Co Ltd | 半導体装置及びその製造方法 |
JP2011129769A (ja) * | 2009-12-18 | 2011-06-30 | Panasonic Corp | 窒化物半導体素子および窒化物半導体素子の製造方法 |
JP2011171640A (ja) * | 2010-02-22 | 2011-09-01 | Sanken Electric Co Ltd | 窒化物半導体装置及びその製造方法 |
JP2012099542A (ja) * | 2010-10-29 | 2012-05-24 | Panasonic Corp | 半導体装置 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2003045898A (ja) * | 2001-08-01 | 2003-02-14 | Sony Corp | 半導体装置およびその製造方法 |
JP4333652B2 (ja) | 2005-08-17 | 2009-09-16 | 沖電気工業株式会社 | オーミック電極、オーミック電極の製造方法、電界効果型トランジスタ、電界効果型トランジスタの製造方法、および、半導体装置 |
JP2007080855A (ja) * | 2005-09-09 | 2007-03-29 | Matsushita Electric Ind Co Ltd | 電界効果型トランジスタ |
JP2011210751A (ja) * | 2010-03-26 | 2011-10-20 | Nec Corp | Iii族窒化物半導体素子、iii族窒化物半導体素子の製造方法、および電子装置 |
JP2012054471A (ja) * | 2010-09-02 | 2012-03-15 | Fujitsu Ltd | 半導体装置及びその製造方法、電源装置 |
CN103582938A (zh) * | 2011-06-03 | 2014-02-12 | 住友电气工业株式会社 | 氮化物电子器件、氮化物电子器件的制作方法 |
WO2013005372A1 (ja) * | 2011-07-01 | 2013-01-10 | パナソニック株式会社 | 半導体装置 |
WO2013153927A1 (ja) * | 2012-04-11 | 2013-10-17 | シャープ株式会社 | 窒化物半導体装置 |
JP2014029991A (ja) * | 2012-06-29 | 2014-02-13 | Sharp Corp | 窒化物半導体装置の電極構造および窒化物半導体電界効果トランジスタ |
WO2014050054A1 (ja) | 2012-09-28 | 2014-04-03 | パナソニック株式会社 | 半導体装置 |
WO2014148255A1 (ja) * | 2013-03-19 | 2014-09-25 | シャープ株式会社 | 窒化物半導体装置および窒化物半導体装置の製造方法 |
JP6575304B2 (ja) * | 2015-10-30 | 2019-09-18 | 富士通株式会社 | 半導体装置、電源装置、増幅器及び半導体装置の製造方法 |
JP2019192698A (ja) * | 2018-04-19 | 2019-10-31 | 富士通株式会社 | 半導体装置、半導体装置の製造方法及び増幅器 |
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Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006120694A (ja) * | 2004-10-19 | 2006-05-11 | Oki Electric Ind Co Ltd | 半導体装置及びその製造方法 |
JP2007158149A (ja) * | 2005-12-07 | 2007-06-21 | Sharp Corp | 半導体装置 |
WO2010021099A1 (ja) * | 2008-08-22 | 2010-02-25 | パナソニック株式会社 | 電界効果トランジスタ |
JP2011091200A (ja) * | 2009-10-22 | 2011-05-06 | Sanken Electric Co Ltd | 半導体装置及びその製造方法 |
JP2011129769A (ja) * | 2009-12-18 | 2011-06-30 | Panasonic Corp | 窒化物半導体素子および窒化物半導体素子の製造方法 |
JP2011171640A (ja) * | 2010-02-22 | 2011-09-01 | Sanken Electric Co Ltd | 窒化物半導体装置及びその製造方法 |
JP2012099542A (ja) * | 2010-10-29 | 2012-05-24 | Panasonic Corp | 半導体装置 |
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