JP2006179834A - 半導体処理装置のクリーニング方法およびシリコン基板のエッチング方法 - Google Patents
半導体処理装置のクリーニング方法およびシリコン基板のエッチング方法 Download PDFInfo
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- 238000010438 heat treatment Methods 0.000 claims abstract description 11
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- 238000005229 chemical vapour deposition Methods 0.000 claims description 11
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- 230000015572 biosynthetic process Effects 0.000 claims description 7
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
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- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
- H01L21/31105—Etching inorganic layers
- H01L21/31111—Etching inorganic layers by chemical means
- H01L21/31116—Etching inorganic layers by chemical means by dry-etching
- H01L21/31122—Etching inorganic layers by chemical means by dry-etching of layers not containing Si, e.g. PZT, Al2O3
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
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- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3105—After-treatment
- H01L21/311—Etching the insulating layers by chemical or physical means
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Abstract
【解決手段】 半導体処理装置のチャンバー内に生成した高誘電率酸化物からなる堆積物・付着物を除去する半導体処理装置のクリーニング方法であって、酸素原子供与性ガスまたは酸化性ガスのいずれかと、ハロゲン系ガスとを混合させたガスを、プラズマ処理または加熱処理により活性化し、前記堆積物・付着物を除去することを特徴とする半導体処理装置のクリーニング方法である。
【選択図】 なし
Description
請求項1にかかる発明は、半導体処理装置のチャンバー内に生成した高誘電率酸化物からなる堆積物または付着物を除去する半導体処理装置のクリーニング方法であって、酸素原子供与性ガスまたは酸化性ガスのいずれかと、ハロゲン系ガスとを混合させたガスを、プラズマ処理または加熱処理により活性化し、前記堆積物または付着物を除去することを特徴とする半導体処理装置のクリーニング方法である。
本発明に係る半導体処理装置のクリーニング方法とは、半導体処理装置のチャンバー内に生成した高誘電率酸化物からなる堆積物または付着物を除去するものである。
本発明に係るシリコン基板のエッチング方法とは、酸素原子供与性ガスまたは酸化性ガスのいずれかと、ハロゲン系ガスとを混合させたガスを、プラズマ処理または加熱処理により活性化し、シリコン基板上に成膜した高誘電率酸化物をエッチングするものである。
図1に示した半導体処理装置を用いて、シリコン基板上に成膜した厚さ100nmのHfO2膜のエッチングを行った。プラズマを発生させるには、2.45GHzのマイクロ波と875Gの磁界を用いた。載置電極には、高周波電源から電力を供給せずに、シリコン基板をプラズマに暴露した。エッチングガスにはBCl3とO2との混合ガスを用い、O2の添加量を、0%、10%、20%と変化させた。エッチングの条件を表1に示す。プラズマ暴露前後のHfO2膜の膜厚の差を段差計で測定し、エッチング速度を求めた。混合ガス中の酸素添加量を変化させた時のHfO2膜のエッチング速度との関係を図2のグラフに示す。
混合ガス中の酸素添加量を0%または10%とし、チャンバー内の真空度を5、6、8、10、12mTorrと変化させた以外は、実験例1と同様にしてエッチングを行い、HfO2膜の膜厚の差を測定し、エッチング速度を求めた。エッチングの条件を表2に示す。混合ガス中の酸素添加量及び真空度を変化させた時のHfO2膜のエッチング速度との関係を図3のグラフに示す。
混合ガス中の酸素添加量を10%とし、チャンバー内の真空度を5、10、12mTorrに変化させた以外は、実験例2と同様にしてエッチングを行い、HfO2膜とシリコン基板の膜厚の差を測定し、エッチング速度を求めた。混合ガス中の真空度を変化させた時のHfO2膜及びシリコン基板のエッチング速度との関係を図4のグラフに示す。
8 シリコン基板
Claims (10)
- 半導体処理装置のチャンバー内に生成した高誘電率酸化物からなる堆積物または付着物を除去する半導体処理装置のクリーニング方法であって、
酸素原子供与性ガスまたは酸化性ガスのいずれかと、ハロゲン系ガスとを混合させたガスを、プラズマ処理または加熱処理により活性化し、前記堆積物または付着物を除去することを特徴とする半導体処理装置のクリーニング方法。 - 前記ハロゲン系ガスが、BCl3、HCl、Cl2、SiCl4、HBr、BBr3、SiBr4、およびBr2からなる群から選択される一種以上のガスである請求項1記載の半導体処理装置のクリーニング方法。
- 前記酸素原子供与性ガスが、O2、O3、H2O、H2O2、COx、SOx、およびNOx(xは1以上の整数)からなる群から選択される一種以上のガスである請求項1または2に記載の半導体処理装置のクリーニング方法。
- 前記酸化性ガスが、NF3および/またはN2Oである請求項1〜3のいずれか一項に半導体処理装置のクリーニング方法。
- 前記高誘電率酸化物が、HfOz、ZrOz、AlyOz、HfSiyOz、HfAlyOz、ZrSiyOz、およびZrAlyOz(yおよびzは、0より大きい整数または少数)からなる群から選択される一種以上の酸化物である請求項1〜4のいずれか一項に記載の半導体処理装置のクリーニング方法。
- 請求項5記載の高誘電率酸化物が、さらに分子内に窒素を含有するものである半導体処理装置のクリーニング方法。
- 前記酸素原子供与性ガスまたは酸化性ガスのいずれかと、ハロゲン系ガスとを混合させたガスに、さらにフッ素系ガスを添加してなる請求項1〜6のいずれか一項に記載の半導体処理装置のクリーニング方法。
- 前記フッ素系ガスが、CF4、C2F6、C3F8、C4F6、ClF3、F2、SF6、COF2からなる群から選択される一種以上のガスである請求項7記載の半導体処理装置のクリーニング方法。
- 前記半導体処理装置が、化学気相堆積(CVD)法、原子層堆積(ALD)法のいずれかの成膜法に用いられる装置または高誘電率酸化物をエッチングするエッチング装置である請求項1〜8のいずれか一項に記載の半導体処理装置のクリーニング方法。
- シリコン基板上に成膜した高誘電率酸化物をエッチングする方法であって、
酸素原子供与性ガスまたは酸化性ガスのいずれかと、ハロゲン系ガスとを混合させたガスを、プラズマ処理または加熱処理により活性化し、前記高誘電率酸化物をエッチングすることを特徴とするシリコン基板のエッチング方法。
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JP2004374107A JP4836112B2 (ja) | 2004-12-24 | 2004-12-24 | 半導体処理装置のクリーニング方法およびシリコン基板のエッチング方法 |
EP05819632A EP1840946A1 (en) | 2004-12-24 | 2005-12-22 | Method for cleaning of semiconductor processing apparatus and method for ethching silicon substrate |
PCT/JP2005/023625 WO2006068235A1 (ja) | 2004-12-24 | 2005-12-22 | 半導体処理装置のクリーニング方法およびシリコン基板のエッチング方法 |
TW094145821A TWI381438B (zh) | 2004-12-24 | 2005-12-22 | 半導體處理裝置之清潔方法及矽基板之蝕刻方法 |
KR1020077015290A KR100876215B1 (ko) | 2004-12-24 | 2005-12-22 | 반도체 처리장치의 클리닝 방법 및 실리콘기판의 식각 방법 |
US11/793,423 US20080160777A1 (en) | 2004-12-24 | 2005-12-22 | Cleaning Method For Processing Chamber Of Semiconductor Substrates And Etching Method For Silicon Substrates Technical Field |
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KR (1) | KR100876215B1 (ja) |
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008060171A (ja) * | 2006-08-29 | 2008-03-13 | Taiyo Nippon Sanso Corp | 半導体処理装置のクリーニング方法 |
JP2009016611A (ja) * | 2007-07-05 | 2009-01-22 | Hitachi High-Technologies Corp | プラズマエッチング処理方法 |
JP2009021584A (ja) * | 2007-06-27 | 2009-01-29 | Applied Materials Inc | 高k材料ゲート構造の高温エッチング方法 |
WO2009037991A1 (ja) * | 2007-09-19 | 2009-03-26 | Hitachi Kokusai Electric Inc. | クリーニング方法及び基板処理装置 |
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- 2005-12-22 KR KR1020077015290A patent/KR100876215B1/ko active IP Right Grant
- 2005-12-22 TW TW094145821A patent/TWI381438B/zh not_active IP Right Cessation
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JP2008060171A (ja) * | 2006-08-29 | 2008-03-13 | Taiyo Nippon Sanso Corp | 半導体処理装置のクリーニング方法 |
JP2010503996A (ja) * | 2006-09-12 | 2010-02-04 | 東京エレクトロン株式会社 | ハフニウム含有材料を乾式エッチングする方法およびシステム |
JP2009021584A (ja) * | 2007-06-27 | 2009-01-29 | Applied Materials Inc | 高k材料ゲート構造の高温エッチング方法 |
JP2009016611A (ja) * | 2007-07-05 | 2009-01-22 | Hitachi High-Technologies Corp | プラズマエッチング処理方法 |
WO2009037991A1 (ja) * | 2007-09-19 | 2009-03-26 | Hitachi Kokusai Electric Inc. | クリーニング方法及び基板処理装置 |
JP5213868B2 (ja) * | 2007-09-19 | 2013-06-19 | 株式会社日立国際電気 | クリーニング方法及び基板処理装置 |
JP2009123795A (ja) * | 2007-11-13 | 2009-06-04 | Hitachi Kokusai Electric Inc | 半導体装置の製造方法及び基板処理装置 |
US8481434B2 (en) | 2007-11-16 | 2013-07-09 | Hitachi Kokusai Electric Inc. | Method of manufacturing a semiconductor device and processing apparatus |
JP2009188198A (ja) * | 2008-02-06 | 2009-08-20 | Taiyo Nippon Sanso Corp | 半導体装置の製造方法及び基板処理装置 |
CN101504915B (zh) * | 2008-02-07 | 2012-02-22 | 东京毅力科创株式会社 | 等离子体蚀刻方法和等离子体蚀刻装置 |
KR20150047441A (ko) | 2013-10-24 | 2015-05-04 | 도쿄엘렉트론가부시키가이샤 | 플라즈마 처리 방법 및 플라즈마 처리 장치 |
US9653317B2 (en) | 2013-10-24 | 2017-05-16 | Tokyo Electron Limited | Plasma processing method and plasma processing apparatus |
Also Published As
Publication number | Publication date |
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JP4836112B2 (ja) | 2011-12-14 |
KR100876215B1 (ko) | 2008-12-31 |
WO2006068235A1 (ja) | 2006-06-29 |
TW200625442A (en) | 2006-07-16 |
TWI381438B (zh) | 2013-01-01 |
KR20070086917A (ko) | 2007-08-27 |
EP1840946A1 (en) | 2007-10-03 |
US20080160777A1 (en) | 2008-07-03 |
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