JP2014513035A - 半導体装置およびその製造方法 - Google Patents
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Abstract
Description
Claims (20)
- 装置であって、
シリコン(Si)の基板であって、前記基板が少なくとも200ミリメートルの直径のウェーハであり、かつSi(111)表面を有する、シリコン(Si)の基板と、
前記基板の前記Si(111)表面の上層の窒化アルミニウム(AlN)のバッファ層と、
前記バッファ層の上方の窒化ガリウム(GaN)の上層と、を備え、
前記ウェーハ全体にわたり、前記窒化アルミニウムの原子の最下面には前記窒化アルミニウムのアルミニウム原子が実質的に存在せず、前記ウェーハ全体にわたり、前記窒化アルミニウムの原子の最下面には前記窒化アルミニウムの窒素原子のみが実質的に存在する、装置。 - SiNxの層が前記基板と前記バッファ層との間に存在しない、請求項1に記載の装置。
- 前記Si(111)表面はSi(111)1×1構造を有し、かつSi(111)7×7構造を有さない、請求項1に記載の装置。
- 前記シリコン及び窒化アルミニウムはAlN<0001>||Si<111>として配向する、請求項1に記載の装置。
- いかなる量の金属アルミニウムも前記基板と前記バッファ層との間に配置されない、請求項1に記載の装置。
- 窒化アルミニウムガリウム(AlxGa1−xN)を含む第2バッファ層を更に備え、
前記窒化アルミニウムガリウムの第2バッファ層は、前記窒化アルミニウムのバッファ層と前記窒化ガリウムの上層との間に配置される、請求項1に記載の装置。 - 前記窒化アルミニウム(AlN)のバッファ層は、205〜250ナノメートルの厚さである、請求項1に記載の装置。
- (a)シリコン(Si)の基板をチャンバ内で950℃より高い温度に加熱する工程と、
(b)水素(H2)を前記チャンバに流す工程と、
(c)前記水素が前記チャンバに流れている間に、第1の量のアンモニア(NH3)を前記チャンバに流す工程であって、前記第1の量のアンモニアは、前記チャンバに流れる前記水素の0.01容積%未満である、工程と、
(d)前記水素が前記チャンバに流れている間に、トリメチルアルミニウム(Al2(CH3)6)を前記チャンバに流す工程と、
(e)前記トリメチルアルミニウムが前記チャンバに流れている間に、第2の量のアンモニアを前記チャンバに流す工程であって、前記第2の量のアンモニアは前記チャンバに流れる水素の0.002容積%超である、工程と、を備える、方法。 - 前記第1の量のアンモニアを前記チャンバに流す工程は、30秒〜3分の間行われる、請求項8に記載の方法。
- 前記基板は表面を有するウェーハであり、前記第1の量のアンモニアは、前記基板の前記表面の各平方センチメートルにわたって0.006立方センチメートル/分を超えない、請求項8に記載の方法。
- 前記基板は表面を有するウェーハであり、前記水素を前記チャンバに流す工程は、106〜118立方センチメートル/分の水素を前記基板の表面の各平方センチメートルにわたって流すことにより行われる、請求項8に記載の方法。
- 前記トリメチルアルミニウムを前記チャンバに流す工程は10〜20分の間行われる、請求項8に記載の方法。
- トリメチルアルミニウムは前記チャンバに約90μmol/分の量で流れる、請求項8に記載の方法。
- (b)における水素を流す工程時の前記チャンバ内の温度は1100℃より高く、(c)における前記第1の量のアンモニアを流す工程時の前記チャンバ内の温度は1000℃〜1050℃である、請求項8に記載の方法。
- シリコン(Si)の基板であって、前記基板が6インチ超の直径のウェーハであり、かつSi(111)表面を有する、シリコン(Si)の基板と、
前記基板の上の窒化ガリウム(GaN)の上層であって、前記Si(111)表面と前記窒化ガリウムの上層との格子ミスマッチが存在する、上層と、
前記格子ミスマッチを補償して、前記窒化ガリウムの上層が低応力下で成長することを可能とさせるための手段であって、前記手段が窒素原子を含み、前記ウェーハ全体にわたり、前記手段の実質的に窒素原子のみが前記Si(111)表面に対する結合を形成する、手段と、を備える、装置。 - 別の物質の層は前記基板と前記手段との間に存在しない、請求項15に記載の装置。
- 前記Si(111)表面はSi(111)1×1構造を有し、Si(111)7×7構造を有しない、請求項15に記載の装置。
- 窒化アルミニウムガリウム(AlxGa1−xN)を含むバッファ層を更に備え、
前記窒化アルミニウムガリウムのバッファ層は、前記手段と前記窒化ガリウムの上層との間に配置される、請求項15に記載の装置。 - 前記手段は180〜200ナノメートルの厚さである層である、請求項15に記載の装置。
- 前記手段は単一極性材料である、請求項15に記載の装置。
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US13/190,420 | 2011-07-25 | ||
US13/190,420 US20130026480A1 (en) | 2011-07-25 | 2011-07-25 | Nucleation of Aluminum Nitride on a Silicon Substrate Using an Ammonia Preflow |
PCT/US2012/041779 WO2013015894A2 (en) | 2011-07-25 | 2012-06-09 | Nucleation of aluminum nitride on a silicon substrate using an ammonia preflow |
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JP2015148097A Division JP2016020299A (ja) | 2011-07-25 | 2015-07-27 | 半導体装置 |
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JP2015148097A Pending JP2016020299A (ja) | 2011-07-25 | 2015-07-27 | 半導体装置 |
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US (3) | US20130026480A1 (ja) |
JP (2) | JP5842057B2 (ja) |
KR (1) | KR101552412B1 (ja) |
CN (1) | CN103415915A (ja) |
TW (1) | TWI494973B (ja) |
WO (1) | WO2013015894A2 (ja) |
Cited By (1)
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JP2018101701A (ja) * | 2016-12-20 | 2018-06-28 | 住友電工デバイス・イノベーション株式会社 | 半導体基板およびその製造方法 |
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- 2012-06-09 KR KR1020137023522A patent/KR101552412B1/ko active Active
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US20170198410A1 (en) | 2017-07-13 |
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US10174439B2 (en) | 2019-01-08 |
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