JP4790226B2 - Iii族窒化物を有する装置及びiii族窒化物を有する装置の製造方法 - Google Patents
Iii族窒化物を有する装置及びiii族窒化物を有する装置の製造方法 Download PDFInfo
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- 150000004767 nitrides Chemical class 0.000 title claims description 39
- 238000004519 manufacturing process Methods 0.000 title description 8
- 239000000758 substrate Substances 0.000 claims description 52
- 238000000034 method Methods 0.000 claims description 26
- 229910052751 metal Inorganic materials 0.000 claims description 18
- 239000002184 metal Substances 0.000 claims description 18
- 238000005530 etching Methods 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 7
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000000059 patterning Methods 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 2
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052733 gallium Inorganic materials 0.000 claims 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 55
- 229910002601 GaN Inorganic materials 0.000 description 52
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 40
- 229910052594 sapphire Inorganic materials 0.000 description 17
- 239000010980 sapphire Substances 0.000 description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 15
- 239000007864 aqueous solution Substances 0.000 description 12
- 239000002585 base Substances 0.000 description 12
- 238000001878 scanning electron micrograph Methods 0.000 description 9
- 239000000243 solution Substances 0.000 description 9
- 238000001039 wet etching Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000001312 dry etching Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000007872 degassing Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical group [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000008367 deionised water Substances 0.000 description 2
- 229910021641 deionized water Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910002704 AlGaN Inorganic materials 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- VVTRNRPINJRHBQ-UHFFFAOYSA-N [Cl].[Ar] Chemical compound [Cl].[Ar] VVTRNRPINJRHBQ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 238000000347 anisotropic wet etching Methods 0.000 description 1
- 238000010936 aqueous wash Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000003637 basic solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229920002120 photoresistant polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000007261 regionalization Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
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Description
電子デバイスに関しては、フィールド・エミッターを作るためにIII族窒化物が使用されてきた。フィールド・エミッターは鋭い先端を有する伝導性構造体である。鋭い先端は充電されることに応答して高い電界を発生する。高い電界によって先端から電子が放出される。この理由から、フィールド・エミッターのアレイは蛍光体画像スクリーンを駆動することができる。
さまざまな実施形態により、機械的にパターン形成した表面を備えるIII族窒化物層を製造する方法が提供される。パターン形成した表面は、得られる構造に機能性を与える。製造方法は、強塩基による化学作用に対する窒素極性(N−極性)III族窒化物層の感受性を利用する。この方法では、塩基性溶液を使用し、パターン形成された表面が形成されるようにIII族窒化物層を湿式エッチングする。パターン形成した表面の具体例は光子バンドギャップ構造およびフィールド・エミッター・アレイを提供する。
図および文章において、同じ参照番号は同じ要素を表す。
III族窒化物の
層32の厚さはベース層18の厚さよりも一般に100〜10,000倍厚い。GaN層32の具体例は30μm以上の厚さを有し、AlNベース層18はわずかに約20nm〜30nmの厚さである。ベース層18は、ベース層18の上に配置される他の層の極性を配列するのに十分な厚さであればよい。
方法40は、結晶質基板の選択された平坦な表面上に、第1のIII族窒化物の第1の金属極性層を形成することを含む(ステップ42)。層の形成は、第1のIII族窒化物のエピタキシャル成長を実施し、層をリソグラフで機械的にパターン形成することを含む。第1のIII族窒化物の組成物は、エピタキシャル成長によって金属極性が形成されるように選択される。機械的なパターン形成によって、層を貫通して基板の一部を露出する同一の孔または溝の規則的なパターンが形成される。
開示、図面、請求項から、本発明の他の実施形態は当業者には明らかであろう。
Claims (8)
- 平坦な表面を有する結晶質基板を提供し、
前記平坦な表面上に第1のIII族窒化物の第1の層を形成することを含み、前記第1の層は、単一極性であり、前記基板の一部を露出する孔または溝のパターンを有し、さらに、
次いで、前記第1の層と前記基板の露出部の上に第2のIII族窒化物の第2の層をエピタキシャル成長させることを含み、前記第1および第2のIII族窒化物が異なる合金組成物を有し、さらに、
前記第2の層を塩基の溶液に曝して、変形のアレイを有するよう前記第2の層を機械的にパターン形成することを含み、前記溶液は、前記第1の層上の前記第2の層の部分以上に、前記基板の露出部上の前記第2の層の部分を選択的にエッチングする、方法。 - 前記単一極性がIII族金属極性である、請求項1に記載の方法。
- 前記エピタキシャル成長を実施することによって、前記第2のIII族窒化物の1つの極性を前記第1のIII族窒化物の上に形成し、前記第2のIII族窒化物の反対の極性を前記基板の露出部の上に形成する、請求項1に記載の方法。
- 前記第2の層が第1および第2領域からなり、前記第1の領域が前記基板の露出部に配置され、前記第2の領域が前記第1の層上に配置されており、そして、
前記曝すことによって、前記第1および第2領域の一方にピラミッドが形成され、前記第1および第2領域の他方に平滑な層が形成される、請求項1に記載の方法。 - 前記曝すことによって、前記第2のIII族窒化物の前記第2の層の中に柱状孔または溝のアレイが形成される、請求項1に記載の方法。
- 平坦な表面を備える結晶質基板と、
前記表面の一部の上に配置された複数のピラミッド状のフィールド・エミッターと、
前記表面上の別の部分に配置された第1のIII族窒化物層とを含み、前記フィールド・エミッターが第2のIII族窒化物を含み、さらに、
前記第1のIII族窒化物層の上にあり、ピラミッド状の表面構造をもたない第2のIII族窒化物半導体の層とを含み、
前記第1および第2のIII族窒化物が異なる合金組成物を有する、装置。 - 前記第1のIII族窒化物がアルミニウムを含み、前記第2のIII族窒化物がガリウムを含む、請求項6に記載の装置。
- 前記ピラミッド状のフィールド・エミッターによって放出された電子を受容するように配置された蛍光スクリーンと、
前記第2のIII族窒化物層と前記蛍光スクリーンとの間に配置された複数のゲート電極とをさらに含む、請求項6に記載の装置。
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US10/397,799 US6986693B2 (en) | 2003-03-26 | 2003-03-26 | Group III-nitride layers with patterned surfaces |
US10/397799 | 2003-03-26 |
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EP (3) | EP1780748B1 (ja) |
JP (2) | JP4790226B2 (ja) |
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KR100492482B1 (ko) * | 2002-09-04 | 2005-06-03 | 한국과학기술연구원 | Pembe로 제조된 상온 자성반도체 및 그 소자 |
US6986693B2 (en) * | 2003-03-26 | 2006-01-17 | Lucent Technologies Inc. | Group III-nitride layers with patterned surfaces |
US6960526B1 (en) * | 2003-10-10 | 2005-11-01 | The United States Of America As Represented By The Secretary Of The Army | Method of fabricating sub-100 nanometer field emitter tips comprising group III-nitride semiconductors |
US7276423B2 (en) * | 2003-12-05 | 2007-10-02 | International Rectifier Corporation | III-nitride device and method with variable epitaxial growth direction |
EP1741144A1 (de) * | 2004-04-29 | 2007-01-10 | Osram Opto Semiconductors GmbH | Verfahren zum herstellen eines strahlungsemittierenden halbleiterchips |
US20050244159A1 (en) * | 2004-04-30 | 2005-11-03 | Aref Chowdhury | Optical wavelength-conversion |
KR101041843B1 (ko) * | 2005-07-30 | 2011-06-17 | 삼성엘이디 주식회사 | 질화물계 화합물 반도체 발광소자 및 그 제조방법 |
US7952109B2 (en) * | 2006-07-10 | 2011-05-31 | Alcatel-Lucent Usa Inc. | Light-emitting crystal structures |
EP2171748A1 (en) * | 2007-07-26 | 2010-04-07 | S.O.I.Tec Silicon on Insulator Technologies | Epitaxial methods and templates grown by the methods |
JP2009145440A (ja) * | 2007-12-12 | 2009-07-02 | Sumitomo Metal Mining Co Ltd | 波長変換素子 |
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EP1467404A3 (en) | 2004-10-20 |
US20120028448A1 (en) | 2012-02-02 |
JP5721545B2 (ja) | 2015-05-20 |
JP2011233531A (ja) | 2011-11-17 |
US7468578B2 (en) | 2008-12-23 |
US8070966B2 (en) | 2011-12-06 |
US20060220525A1 (en) | 2006-10-05 |
CN101261936B (zh) | 2010-10-13 |
CN101261936A (zh) | 2008-09-10 |
US7084563B2 (en) | 2006-08-01 |
CN1532890A (zh) | 2004-09-29 |
EP1780748A1 (en) | 2007-05-02 |
EP1467404A2 (en) | 2004-10-13 |
US20090139957A1 (en) | 2009-06-04 |
US20050269593A1 (en) | 2005-12-08 |
KR101050676B1 (ko) | 2011-07-21 |
US20040189173A1 (en) | 2004-09-30 |
USRE47767E1 (en) | 2019-12-17 |
DE602004006043T2 (de) | 2007-12-27 |
EP3035372A1 (en) | 2016-06-22 |
EP1467404B1 (en) | 2007-04-25 |
CN100397559C (zh) | 2008-06-25 |
US8613860B2 (en) | 2013-12-24 |
EP1780748B1 (en) | 2016-09-21 |
DE602004006043D1 (de) | 2007-06-06 |
KR20040084666A (ko) | 2004-10-06 |
JP2004297070A (ja) | 2004-10-21 |
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