JP2011219337A - 結晶の製造方法、結晶および半導体装置 - Google Patents
結晶の製造方法、結晶および半導体装置 Download PDFInfo
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Abstract
【解決手段】表面11aと、表面11aと反対側の裏面11bとを有する種結晶11を準備する工程、種結晶11の裏面11bを、台座41に固定する工程、種結晶11の表面11a上に結晶13を成長させる工程を備えた昇華法による炭化珪素結晶の製造方法であって、前記種結晶の裏面11bを台座41に固定する工程においては、種結晶11の裏面にSi層を被覆または配置し、Si層を炭化させることにより、種結晶11と台座41とを固定する。
【選択図】図8
Description
図1は、本発明の実施の形態1の結晶10を概略的に示す断面図である。まず、図1を参照して、本発明の一実施の形態における結晶10について説明する。
本実施の形態における結晶は、図1に示す実施の形態1の結晶10と同様である。しかし、結晶10の製造方法において本実施の形態と実施の形態1とは異なる。図2、図4、図6〜図9を参照して、本実施の形態における結晶の製造方法について説明する。なお、図9は、本実施の形態の結晶の製造方法の各工程を概略的に示す断面図である。
本実施の形態における結晶は、図1に示す実施の形態1の結晶10と同様である。しかし、結晶10の製造方法において本実施の形態と実施の形態1とは異なる。図2、図4、図6〜図8、図10、図11を参照して、本実施の形態における結晶の製造方法について説明する。なお、図10および図11は、本実施の形態の結晶の製造方法の各工程を概略的に示す断面図である。
図12は、本発明の実施の形態4の半導体装置100を概略的に示す断面図である。図12を参照して、本実施の形態における半導体装置100について説明する。
本発明例1の結晶の製造方法は、基本的には上述した実施の形態1にしたがった。まず、図2に示すように、種結晶11として、厚さ約3mm、直径60mm、ポリタイプ4H、および面方位(000−1)を有するSiC基板を準備した。
本発明例2の結晶の製造方法は、基本的には上述した実施の形態2にしたがった。本発明例2の結晶の製造方法は、本発明例1と同様の構成を備えていたが、種結晶11の裏面11bを、台座41に固定する工程において異なっていた。
比較例1は、基本的には本発明例1と同様にSiC結晶を製造したが、図17に示すように、種結晶11と台座41とを接着剤31によって接着した点において異なっていた。
比較例2は、基本的には本発明例1と同様にSiC結晶を製造したが、図6に示すように、Si層12の代わりに10μm厚の有機薄膜22が設けられた種結晶11が台座41に、機械的な固定治具33によって固定された点において異なっていた。
Claims (9)
- 表面と、前記表面と反対側の裏面とを有する種結晶を準備する工程と、
前記種結晶の前記裏面を、台座に固定する工程と、
前記種結晶の前記表面上に結晶を成長する工程とを備え、
前記固定する工程では、前記種結晶の前記裏面にシリコン層を被覆または配置し、前記シリコン層を炭化させることにより、前記種結晶と前記台座とを固定する、結晶の製造方法。 - 前記シリコン層は多結晶である、請求項1に記載の結晶の製造方法。
- 前記シリコン層は単結晶である、請求項1に記載の結晶の製造方法。
- 前記シリコン層は非晶質である、請求項1に記載の結晶の製造方法。
- 前記固定する工程に先立って、前記種結晶の前記裏面を研磨する工程をさらに備えた、請求項1〜4のいずれか1項に記載の結晶の製造方法。
- 前記固定する工程に先立って、前記台座において前記種結晶が固定される領域を研磨する工程をさらに備えた、請求項1〜5のいずれか1項に記載の結晶の製造方法。
- 前記成長する工程では、炭化珪素結晶を成長する、請求項1〜6のいずれか1項に記載の結晶の製造方法。
- 請求項1〜7のいずれか1項に記載の結晶の製造方法により製造された結晶であって、
単結晶であることを特徴とする、結晶。 - 請求項8に記載の結晶を用いて作製された、半導体装置。
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US13/085,620 US20110254017A1 (en) | 2010-04-14 | 2011-04-13 | Manufacturing method for crystal, crystal, and semiconductor device |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013115272A1 (ja) * | 2012-01-30 | 2013-08-08 | 京セラ株式会社 | 種結晶保持体、結晶成長装置および結晶成長方法 |
JP2016020306A (ja) * | 2015-11-05 | 2016-02-04 | 京セラ株式会社 | 種結晶保持体 |
JP2016199421A (ja) * | 2015-04-09 | 2016-12-01 | 株式会社フジクラ | 単結晶の製造方法 |
KR20200072737A (ko) * | 2018-12-13 | 2020-06-23 | 에스케이씨 주식회사 | 종자정 부착 방법 |
US11268209B2 (en) | 2018-10-22 | 2022-03-08 | Senic Inc. | Seed crystal including protective film including a first layer with first filler and second layer with second filler |
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CN104233458A (zh) * | 2014-09-30 | 2014-12-24 | 中国科学院上海硅酸盐研究所 | 一种碳化硅晶体生长用的石墨籽晶托 |
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WO2013115272A1 (ja) * | 2012-01-30 | 2013-08-08 | 京セラ株式会社 | 種結晶保持体、結晶成長装置および結晶成長方法 |
JPWO2013115272A1 (ja) * | 2012-01-30 | 2015-05-11 | 京セラ株式会社 | 種結晶保持体および結晶成長装置 |
US9890470B2 (en) | 2012-01-30 | 2018-02-13 | Kyocera Corporation | Seed crystal holder for growing a crystal by a solution method |
JP2016199421A (ja) * | 2015-04-09 | 2016-12-01 | 株式会社フジクラ | 単結晶の製造方法 |
JP2016020306A (ja) * | 2015-11-05 | 2016-02-04 | 京セラ株式会社 | 種結晶保持体 |
US11268209B2 (en) | 2018-10-22 | 2022-03-08 | Senic Inc. | Seed crystal including protective film including a first layer with first filler and second layer with second filler |
KR20200072737A (ko) * | 2018-12-13 | 2020-06-23 | 에스케이씨 주식회사 | 종자정 부착 방법 |
KR102177759B1 (ko) * | 2018-12-13 | 2020-11-11 | 에스케이씨 주식회사 | 종자정 부착 방법 |
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