JP5506678B2 - イットリウム含有保護皮膜による半導体処理装置の被覆方法 - Google Patents
イットリウム含有保護皮膜による半導体処理装置の被覆方法 Download PDFInfo
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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- C23C28/00—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
- C23C28/04—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material
- C23C28/042—Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings of inorganic non-metallic material including a refractory ceramic layer, e.g. refractory metal oxides, ZrO2, rare earth oxides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- 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
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/4401—Means for minimising impurities, e.g. dust, moisture or residual gas, in the reaction chamber
- C23C16/4404—Coatings or surface treatment on the inside of the reaction chamber or on parts thereof
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/10—Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
- C23C4/11—Oxides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
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Description
本発明の実施形態は、半導体処理装置内に存在する類のプラズマへの耐性が高い、主に固溶体セラミックを含む特殊酸化イットリウム含有セラミックの溶射被覆方法に関する。
この項では、本発明の開示の実施形態に関連した背景の主題について説明する。この項で論じる背景技術が法的に従来技術を構成すると表明又は含意する意図はない。
図1は、本発明の例示的な実施形態に従って生成されたタイプA及びタイプB材料を含む様々なセラミック材料の電気抵抗率を示すグラフ100である。抵抗率は、軸102の温度の関数として軸104に示される。抵抗率は、ASTM D1829−66又はJIS C2141に準拠した標準試験条件を採用して空気環境内で1000Vで測定された。
図1の曲線108は、本発明に従って生成されたHfO2含有焼結セラミック材料を表し、表においては試料1として記載されている。このセラミック材料は、Nb2O5含有材料より高い抵抗率を示すが、静電チャック又は基板昇降ピンよりアーク放電が問題とならない半導体処理装置部品の作製に有用である。
図1の曲線110は、本発明に従って生成されたSc2O3含有焼結セラミック材料を表し、表においては試料2として記載されている。ここでもまた、この材料は抵抗率要件が1011Ω・cmである用途において使用され得る。
図1の曲線112は、図2の相図に図示されるY2O3−ZrO2−Al2O3材料を表す。この材料は制御された抵抗率のセラミック材料に関してのみ比較例として説明される。この焼結セラミック材料は、Y2O3及びZrO2から成る固溶体及びY2O3及びAl2O3酸化物から成る化合物を含む。典型的な焼結セラミック材料は、濃度約60モル%〜約65モル%のY2O3、濃度約20モル%〜約25モル%のZrO2、濃度約10モル%〜約15モル%のAl2O3から生成される。図2の相図において領域Aとして図示され、また図1においてY2O3−ZrO2−Al2O3についてのグラフによって表される焼結セラミック材料の一実施形態は、立方晶イットリアタイプの結晶構造を有する約60モル%の固溶体(ここでc−Y2O3は溶媒であり、Zr2O3は溶質である)と、ホタル石タイプの結晶構造を有する約2モル%の固溶体(ここでZrO2は溶媒であり、Y2O3は溶質である)と、約38モル%のYAM(Y4Al2O9)化合物を含有する。
図1の曲線114は、表において試料3として記載のNd2O3含有焼結セラミック材料を表す。この材料は、放電を防止するのに必要な要件を満たしておらず、本発明を構成する独自のセラミック材料の一部ではない比較例であると見なされる。
図1の曲線116は、純粋なY2O3の焼結セラミックについて観察された電気抵抗特性を表す。この材料もまた比較例であり、ベースラインとして有用であるが、これは多数の半導体装置部品が純粋なY2O3から作製されているからである。純粋なY2O3の抵抗率と比較すると、本発明によって達成される電気抵抗率における極めて著しい改善がわかる。
図4は、多数の焼結セラミック試験試料についての、抵抗率試験中に印加された電圧の関数としての電気抵抗率を示すグラス400である。抵抗率は軸404に、電圧は軸402に示される。試験温度は室温(約27℃)である。このグラフの目的は、抵抗率が低下するように制御された本発明のコロージョン耐性セラミックの実施形態と、現行のドープ窒化アルミニウムセラミックとの間における抵抗率の違いを示すことである。ドープ窒化アルミニウムセラミックは若干低い抵抗率を有するが、そのコロージョン速度は、抵抗率が低下するよう改質された酸化イットリウム含有セラミックのコロージョン速度より少なくとも2倍速い。
図5は、プラズマに曝露された様々な焼結セラミック材料についての、Y2O3のエロージョン速度に正規化された平均エロージョン速度を示す棒グラフ500である。プラズマはCF4及びCHF3ソースガスから発生させた。プラズマ処理チャンバはアプライドマテリアルズ社から入手可能なトレンチエッチのためのイネーブラであった。プラズマ源電力は最高2000W、処理チャンバ圧力は10〜500mTorr、基板温度は約40℃、時間は76時間であった。軸502は、エロージョン耐性について試験した様々な材料を示す。Y2O3−10ZrO2と識別された試験片は、100重量部のY2O3を10重量部のZrO2と共に焼結することにより形成された焼結固溶体セラミック試験片を表す。Nb2O5又はHfO2又はNd2O3又はSc2O3を含有すると識別された試験片は、これらの材料のそれぞれを含有すると記載された表の組成物を表す。軸504に示されるエロージョン速度を比較すると、抵抗率を変化させた酸化イットリウム含有焼結セラミック材料のエロージョン速度は、基本的に純粋な酸化イットリウムのエロージョン速度と同じであることを示す。更に、抵抗率を変化させた酸化イットリウム含有焼結セラミックのエロージョン速度は、実質的にAl2O3、AlN、ZrO2、石英、W/ZrC、B4C、SiC、半導体処理チャンバライナ用及び半導体処理装置内部部品用のハロゲンプラズマコロージョン耐性材料を得るのに使用されてきたその他のセラミック材料のエロージョン速度よりも良好である。
Claims (12)
- 半導体プラズマ処理チャンバ内で使用される物品に溶射被覆セラミック面を提供する方法であって、溶射被覆セラミック面は、ハロゲン含有プラズマへのエロージョン耐性と、100V及び300℃の温度で測定されたとき、109〜1014Ω・cmの範囲内の電気抵抗率を示し、これによって前記半導体処理チャンバ内でのプラズマアーク放電の可能性を低下させ、皮膜が火炎溶射、熱溶射及びプラズマ溶射から成る群から選択された技法を使用して溶射され、前記溶射被覆セラミック皮膜が、前記溶射プロセスの間、固溶体皮膜を形成するために用いられる少なくとも2種類の前駆体酸化物から形成され、前記少なくとも2種類の前駆体酸化物は、酸化イットリウムと、酸化ジルコニウム、酸化セリウム、酸化ハフニウム、酸化ニオブ、酸化スカンジウム、酸化ネオジム、酸化サマリウム、酸化イッテルビウム、酸化エルビウム、及びそれらの組み合わせから成る群から選択された少なくとも1種の他の酸化物である方法。
- 皮膜が、約80モル%より多い〜100モル%未満の範囲で存在する酸化イットリウム及び0モル%より多い〜約20モル%の範囲で存在する酸化セリウムの前駆体材料から形成される請求項1記載の方法。
- 皮膜が、約0モル%より多い〜100モル%未満の範囲で存在する酸化イットリウム及び0モル%より多い〜約100モル%の範囲で存在する酸化ハフニウムの前駆体材料から形成される請求項1記載の方法。
- 皮膜が、約48モル%より多い〜100モル%未満の範囲で存在する酸化イットリウム及び0モル%より多い〜約52モル%の範囲で存在する酸化ニオブの前駆体材料から形成される請求項1記載の方法。
- 皮膜が、約40モル%〜約100モル%未満の範囲で存在する酸化イットリウム及び0モル%より多い〜約50モル%の範囲で存在する酸化ジルコニウム及び約0モル%より多く最高100モル%未満の範囲で存在する酸化スカンジウムの前駆体材料から形成される請求項1記載の方法。
- 皮膜が、約40モル%〜約100モル%未満の範囲で存在する酸化イットリウム、0モル%より多い〜約50モル%の範囲で存在する酸化ジルコニウム及び約0モル%より多く最高100モル%未満の範囲で存在する酸化ハフニウムの前駆体材料から形成される請求項1記載の方法。
- 皮膜が、約40モル%〜約100モル%未満の範囲で存在する酸化イットリウム、0モル%より多い〜約45モル%の範囲で存在する酸化ジルコニウム、約0モル%より多く最高80モル%未満の範囲で存在する酸化ニオブの前駆体材料から形成される請求項1記載の方法。
- 前記溶射被覆セラミック皮膜は、溶射被覆セラミック皮膜の約5モル%から約30モル%を構成し、酸化イットリウム、酸化ジルコニウム、及び酸化ニオブを含む第1相固溶体と、溶射被覆セラミック皮膜の約5モル%から約30モル%を構成するY3NbO7の第2相と、溶射被覆セラミック皮膜の約1モル%から約10モル%を構成する元素形態のNbの第3相とを含む3種類の相を含む請求項7記載の方法。
- 前記皮膜の下層にある前記物品は、アルミニウム、アルミニウム合金、ステンレススチール、アルミナ、窒化アルミニウム、石英、及びそれらの組み合わせから成る群から選択された材料を含む請求項1〜8のいずれか1項記載の方法。
- 皮膜が、50モル%〜75モル%の範囲で存在する酸化イットリウム、10モル%〜30モル%の範囲で存在する酸化ジルコニウム及び10モル%〜30モル%の範囲で存在する酸化スカンジウムの前駆体材料から形成される請求項5記載の方法。
- 皮膜が、50モル%〜75モル%の範囲で存在する酸化イットリウム、10モル%〜30モル%の範囲で存在する酸化ジルコニウム及び10モル%〜30モル%の範囲で存在する酸化ハフニウムの前駆体材料から形成される請求項6記載の方法。
- 皮膜が、50モル%〜75モル%の範囲で存在する酸化イットリウム、10モル%〜30モル%の範囲で存在する酸化ジルコニウム、10モル%〜30モル%の範囲で存在する酸化ニオブの前駆体材料から形成される請求項7記載の方法。
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US11/890,221 | 2007-08-02 | ||
US11/890,221 US20080213496A1 (en) | 2002-02-14 | 2007-08-02 | Method of coating semiconductor processing apparatus with protective yttrium-containing coatings |
PCT/US2008/009221 WO2009017766A1 (en) | 2007-08-02 | 2008-07-30 | Method of coating semiconductor processing apparatus with protective yttrium-containing coatings |
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JP (2) | JP5506678B2 (ja) |
KR (1) | KR101491437B1 (ja) |
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Cited By (1)
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JP2013063904A (ja) * | 2007-08-02 | 2013-04-11 | Applied Materials Inc | 制御された電気抵抗率を備えた耐プラズマ性セラミック |
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US7371467B2 (en) | 2002-01-08 | 2008-05-13 | Applied Materials, Inc. | Process chamber component having electroplated yttrium containing coating |
US7479304B2 (en) * | 2002-02-14 | 2009-01-20 | Applied Materials, Inc. | Gas distribution plate fabricated from a solid yttrium oxide-comprising substrate |
US20080213496A1 (en) * | 2002-02-14 | 2008-09-04 | Applied Materials, Inc. | Method of coating semiconductor processing apparatus with protective yttrium-containing coatings |
US10622194B2 (en) | 2007-04-27 | 2020-04-14 | Applied Materials, Inc. | Bulk sintered solid solution ceramic which exhibits fracture toughness and halogen plasma resistance |
US10242888B2 (en) | 2007-04-27 | 2019-03-26 | Applied Materials, Inc. | Semiconductor processing apparatus with a ceramic-comprising surface which exhibits fracture toughness and halogen plasma resistance |
KR20090093819A (ko) * | 2008-02-28 | 2009-09-02 | 코바렌트 마테리얼 가부시키가이샤 | 플라즈마 처리 장치에 이용되는 소결체 및 부재 |
EP2350334A2 (en) * | 2008-11-04 | 2011-08-03 | Praxair Technology, Inc. | Thermal spray coatings for semiconductor applications |
US20100140222A1 (en) * | 2008-12-10 | 2010-06-10 | Sun Jennifer Y | Filled polymer composition for etch chamber component |
US20110070811A1 (en) * | 2009-03-25 | 2011-03-24 | Applied Materials, Inc. | Point of use recycling system for cmp slurry |
FR2944293B1 (fr) * | 2009-04-10 | 2012-05-18 | Saint Gobain Coating Solutions | Procede d'elaboration par projection thermique d'une cible |
CN102405511B (zh) * | 2009-04-20 | 2014-06-11 | 应用材料公司 | 使用处理腔室壁上的硅涂层增强清除残余的氟自由基的方法 |
JP5837733B2 (ja) * | 2009-04-24 | 2015-12-24 | 国立大学法人東北大学 | 水分発生用反応炉 |
KR101101910B1 (ko) * | 2009-06-03 | 2012-01-02 | 한국과학기술연구원 | 반도체 제조 장비용 다성분계 열용사 코팅물질, 그 제조방법 및 코팅방법 |
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-
2007
- 2007-08-02 US US11/890,221 patent/US20080213496A1/en not_active Abandoned
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2008
- 2008-07-30 JP JP2010519236A patent/JP5506678B2/ja active Active
- 2008-07-30 WO PCT/US2008/009221 patent/WO2009017766A1/en active Application Filing
- 2008-07-30 KR KR1020107004581A patent/KR101491437B1/ko active IP Right Grant
- 2008-07-30 CN CN201310323450XA patent/CN103436836A/zh active Pending
- 2008-07-30 CN CN2008801016758A patent/CN101772589B/zh not_active Expired - Fee Related
- 2008-08-01 TW TW097129360A patent/TWI441794B/zh not_active IP Right Cessation
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2013063904A (ja) * | 2007-08-02 | 2013-04-11 | Applied Materials Inc | 制御された電気抵抗率を備えた耐プラズマ性セラミック |
Also Published As
Publication number | Publication date |
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CN101772589A (zh) | 2010-07-07 |
US20080213496A1 (en) | 2008-09-04 |
JP2014159637A (ja) | 2014-09-04 |
TW200914394A (en) | 2009-04-01 |
CN101772589B (zh) | 2013-08-28 |
KR101491437B1 (ko) | 2015-02-10 |
JP5978236B2 (ja) | 2016-08-24 |
TWI441794B (zh) | 2014-06-21 |
CN103436836A (zh) | 2013-12-11 |
WO2009017766A1 (en) | 2009-02-05 |
JP2010535288A (ja) | 2010-11-18 |
KR20100052502A (ko) | 2010-05-19 |
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