JP2010219535A - 半導体加工用部品を処理する方法とこの方法によって形成される部品 - Google Patents
半導体加工用部品を処理する方法とこの方法によって形成される部品 Download PDFInfo
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- 238000012545 processing Methods 0.000 title claims abstract description 266
- 239000004065 semiconductor Substances 0.000 title claims abstract description 256
- 238000000034 method Methods 0.000 title claims abstract description 135
- 239000012535 impurity Substances 0.000 claims abstract description 180
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 41
- 150000002367 halogens Chemical class 0.000 claims abstract description 41
- 230000001590 oxidative effect Effects 0.000 claims abstract description 14
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 114
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 82
- 238000005229 chemical vapour deposition Methods 0.000 claims description 45
- 230000008569 process Effects 0.000 claims description 37
- 230000003647 oxidation Effects 0.000 claims description 34
- 238000007254 oxidation reaction Methods 0.000 claims description 34
- 238000003754 machining Methods 0.000 claims description 26
- 239000000758 substrate Substances 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 22
- 239000002184 metal Substances 0.000 claims description 22
- 238000000576 coating method Methods 0.000 claims description 21
- 239000007795 chemical reaction product Substances 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 239000011248 coating agent Substances 0.000 claims description 17
- 239000000356 contaminant Substances 0.000 claims description 16
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 15
- 229910052710 silicon Inorganic materials 0.000 claims description 15
- 239000010703 silicon Substances 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 14
- 230000003746 surface roughness Effects 0.000 claims description 12
- 229910052804 chromium Inorganic materials 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 9
- 238000005530 etching Methods 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000000047 product Substances 0.000 claims description 6
- 239000003929 acidic solution Substances 0.000 claims description 5
- 229910052796 boron Inorganic materials 0.000 claims description 5
- 239000000460 chlorine Substances 0.000 claims description 5
- 229910052731 fluorine Inorganic materials 0.000 claims description 5
- 239000011737 fluorine Substances 0.000 claims description 5
- 239000000725 suspension Substances 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 4
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- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052801 chlorine Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims 1
- 235000012431 wafers Nutrition 0.000 description 63
- 239000010410 layer Substances 0.000 description 62
- 239000007789 gas Substances 0.000 description 42
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 22
- 238000004140 cleaning Methods 0.000 description 18
- 125000004429 atom Chemical group 0.000 description 16
- 230000015572 biosynthetic process Effects 0.000 description 14
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- 239000011651 chromium Substances 0.000 description 13
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 13
- 239000000463 material Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
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- 229910052814 silicon oxide Inorganic materials 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 229910003460 diamond Inorganic materials 0.000 description 5
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- 238000005516 engineering process Methods 0.000 description 5
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- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
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- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 238000007569 slipcasting Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000013019 agitation Methods 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 150000001450 anions Chemical class 0.000 description 2
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- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
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- 230000001007 puffing effect Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 229910001315 Tool steel Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
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- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
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Abstract
【解決手段】半導体加工用部品はSiCで形成され、および、この半導体加工用部品の外側表面部分が、内部不純物レベルの10倍以下である表面不純物レベルを有する。半導体加工用部品を処理する方法は、この半導体加工用部品を高温度においてハロゲン気体に曝露することと、酸化物層を形成するために半導体加工用部品を酸化させることと、この酸化物層を除去することとを含む。
【選択図】図1
Description
16 溝
18、20、22 溝セグメント
Claims (77)
- 半導体加工用部品を処理する方法であって、
高温度でハロゲン気体に前記半導体加工用部品を曝露することと、
酸化物層を形成するために前記半導体加工用部品を酸化させることと、
前記酸化物層を除去すること、
とを含む方法。 - 前記半導体加工用部品をハロゲン気体に曝露する前記段階と前記半導体加工用部品を酸化させる前記段階と、を同時に行う請求項1に記載の方法。
- 前記ハロゲン気体は、塩素とフッ素とから成るグループからのハロゲンを含む請求項1に記載の方法。
- 前記ハロゲン気体はHClを含む請求項3に記載の方法。
- 前記ハロゲン気体は、約0.01%から約10%の範囲内の分圧で存在する請求項1に記載の方法。
- 前記半導体加工用部品を酸化させる前記段階を、約950℃から約1300℃の範囲内の温度で行う請求項1に記載の方法。
- 前記の酸化段階を湿潤雰囲気内で行う請求項1に記載の方法。
- 前記半導体加工用部品は金属不純物を含み、および、前記ハロゲン気体は前記金属不純物と反応して、前記曝露段階中に揮発する反応生成物を形成する請求項1に記載の方法。
- 前記半導体加工用部品は、半導体ウェーハパドルと、プロセスチューブと、ウェーハボートと、ライナと、ペデスタルと、ロングボートと、カンチレバーロッドと、ウェーハキャリアと、プロセスチャンバと、ダミーウェーハと、ウェーハサセプタと、フォーカスリングと、サスペンションリングとから成るグループからの部品を含む請求項1に記載の方法。
- 前記半導体加工用部品は炭化ケイ素を含む請求項1に記載の方法。
- 前記半導体加工用部品は化学気相堆積によって形成される請求項10に記載の方法。
- 前記半導体加工用部品は、基板と、前記基板の上に重なる炭化ケイ素被覆とを含む請求項10に記載の方法。
- 前記炭化ケイ素被覆は化学気相堆積によって堆積させられる請求項12に記載の方法。
- 前記基板は元素ケイ素を含む請求項12に記載の方法。
- 前記基板は、表面上に含浸した前記元素ケイ素を伴う炭化ケイ素を含む請求項14に記載の方法。
- 前記酸化物層を除去する前記段階を、前記酸化物層を可溶化する溶液に前記酸化物層を曝露することによって行う請求項1に記載の方法。
- 前記の曝露段階と前記の酸化段階との前に前記半導体加工用部品を機械加工することをさらに含む請求項1に記載の方法。
- 前記酸化物層は半導体加工作業での使用の前に除去される請求項1に記載の方法。
- ハロゲン気体に曝露する前に剥離液に前記半導体加工用部品を曝露する段階をさらに含む請求項1に記載の方法。
- 前記剥離液は酸性溶液を含む請求項19に記載の方法。
- 半導体加工用部品から汚染物質を除去する方法であって、
高温度で前記汚染物質を反応させて反応生成物を形成することと、
酸化物層を形成するために前記半導体加工用部品を酸化させることと、
前記酸化物層を除去すること、
とを含む方法。 - 前記の反応段階と前記の酸化段階を同時に行う請求項21に記載の方法。
- 前記反応生成物は前記汚染物質よりも高い揮発度を有する請求項21に記載の方法。
- 前記反応生成物は、前記半導体加工用部品から除去されるように前記高温度において蒸発する請求項23に記載の方法。
- 半導体加工用部品を処理する方法であって、
前記半導体加工用部品の表面部分に沿って含まれている汚染物質を高温度で反応させて反応生成物を形成することを含み、外側表面部分は約2ミクロン未満の表面粗さを有する方法。 - 前記半導体加工用部品は、前記半導体加工用部品の表面から10nmの深さにおいてSIMSによって測定された場合に、約1000ppm未満の不純物含量を前記半導体加工用部品の前記外側表面部分に沿って有する請求項25に記載の方法。
- 炭化ケイ素を含む半導体加工用部品であって、前記半導体加工用部品は、2ミクロン未満のRaと、前記半導体加工用部品の表面から10nmの深さにおいてSIMSによって測定された場合において前記半導体加工用部品の外側部分に沿って約1000ppm未満の不純物含量と、を有する表面を持つ半導体加工用部品。
- 前記半導体加工用部品は基板と前記基板上の炭化ケイ素被覆とを含む請求項27に記載の方法。
- 前記半導体加工用部品は約2ミクロン未満の前記Raを有するように機械加工される請求項27に記載の方法。
- 前記不純物含量は約500ppm未満である請求項27に記載の方法。
- 前記不純物含量は約200ppm未満である請求項27に記載の方法。
- 半導体ウェーハを受け入れる半導体加工用部品であって、前記半導体加工用部品は、約2ミクロン未満のRaと、前記表面から10nmの深さにおいてSIMSによって測定された場合において前記半導体加工用部品の外側部分に沿って約1000ppm未満の不純物含量と、を有する表面を持つ半導体加工用部品。
- SiCを含む半導体加工用部品であって、前記半導体加工用部品の外側表面部分は、内部不純物レベルの10倍以下である表面不純物レベルを有する半導体加工用部品。
- 前記内部不純物レベルは前記外側表面部分の外側表面から少なくとも3μmの深さにおいて測定されるレベルである請求項33に記載の半導体加工用部品。
- 前記外側表面部分はCVD−SiCで構成されている請求項33に記載の半導体加工用部品。
- 前記外側表面部分は、基板上に堆積させられているCVD−SiC層である請求項35に記載の半導体加工用部品。
- 前記基板はSiCを含む請求項36に記載の半導体加工用部品。
- 前記基板は、元素ケイ素で含浸されたSiCを含む請求項37に記載の半導体加工用部品。
- 前記基板は、元素ケイ素で含浸された再結晶化SiCを含む請求項38に記載の半導体加工用部品。
- 前記CVD−SiC層は約10μmから約1000μmの範囲内の厚さを有する請求項36に記載の半導体加工用部品。
- 前記半導体加工用部品は独立したCVD−SiC部品である請求項35に記載の半導体加工用部品。
- 前記半導体加工用部品は実質的にCVD−SiCから成る請求項41に記載の半導体加工用部品。
- 前記表面不純物レベルは前記内部不純物レベルの5倍以下である請求項33に記載の半導体加工用部品。
- 前記表面不純物レベルは前記内部不純物レベルの2倍以下である請求項33に記載の半導体加工用部品。
- 前記表面不純物レベルは前記内部不純物レベル以下である請求項33に記載の半導体加工用部品。
- 前記表面不純物レベルと前記内部不純物レベルはCr、Fe、Cu、Ni、Al、Ca、Na、Zn、V、B、Ti濃度の少なくとも1つに基づいている請求項33に記載の半導体加工用部品。
- 前記表面不純物レベルと前記内部不純物レベルはCr濃度とFe濃度の少なくとも一方に基づいている請求項46に記載の半導体加工用部品。
- 前記表面不純物レベルと前記内部不純物レベルはFe濃度に基づいている請求項47に記載の半導体加工用部品。
- 前記内部不純物レベルは、Feにおいて1E17(原子/cc)以下であり、および、Crにおいて1E15(原子/cc)以下である請求項47に記載の半導体加工用部品。
- 前記半導体加工用部品は、半導体ウェーハパドルと、プロセスチューブと、ウェーハボートと、ライナと、ペデスタルと、ロングボートと、カンチレバーロッドと、ウェーハキャリアと、プロセスチャンバと、ダミーウェーハと、ウェーハサセプタと、フォーカスリングと、サスペンションリングとから成るグループからの部品を含む請求項33に記載の半導体加工用部品。
- 前記半導体加工用部品はウェーハボートである請求項50に記載の半導体加工用部品。
- 前記半導体加工用部品を、前記表面不純物レベルを実現するための処理の前に機械加工する請求項33に記載の半導体加工用部品。
- 半導体加工用部品を処理する方法であって、
SiCの化学気相堆積によって形成された外側表面部分を有し、かつ、前記外側表面部分は内部不純物レベルと表面不純物レベルとを有する半導体加工用部品を用意することと、
前記表面不純物レベルが前記内部不純物レベルの10倍以下であるように前記外側表面部分のターゲット部分を除去すること、
とを含む方法。 - 表面不純物レベルが内部不純物レベルの5倍以下である請求項1に記載の方法。
- 表面不純物レベルが内部不純物レベルの2倍以下である請求項1に記載の方法。
- 表面不純物レベルが内部不純物レベル以下である請求項1に記載の方法。
- ターゲット部分を反応させることによって該ターゲット部分を除去することを含む請求項1に記載の方法。
- 前記の反応は、前記外側表面部分が酸化物を形成するような酸化であり、および、前記ターゲット部分を除去する前記段階は、さらに前記酸化物の除去を含む請求項57に記載の方法。
- 前記ターゲット部分を除去するために酸化と前記酸化物の除去とが繰り返される請求項58に記載の方法。
- 前記ターゲット部分はエッチングによって除去される請求項57に記載の方法。
- 前記エッチングは、エッチング剤生成物を形成するために前記ターゲット部分をエッチング種と反応させることを含み、および、前記エッチング剤生成物は前記ターゲット部分を除去するために蒸発する請求項60に記載の方法。
- 前記エッチング種はCl含有気体であり、および、SiClxエッチング剤生成物を形成する請求項61に記載の方法。
- さらに、反応生成物を形成するために外側表面部分の外側表面に存在する汚染物質を反応させることを含む請求項1に記載の方法。
- 前記外側表面部分を酸化させて酸化物と形成して、その後で前記酸化物を除去することとによってターゲット部分を除去し、前記の反応段階と前記の酸化段階とを同時に行う請求項63に記載の方法。
- 前記汚染物質はハロゲン気体と反応させられる請求項63に記載の方法。
- 前記半導体加工用部品は、半導体ウェーハパドルと、プロセスチューブと、ウェーハボートと、ライナと、ペデスタルと、ロングボートと、カンチレバーロッドと、ウェーハキャリアと、プロセスチャンバと、ダミーウェーハと、ウェーハサセプタと、フォーカスリングと、サスペンションリングとから成るグループからの部品を含む請求項1に記載の方法。
- 前記半導体加工用部品は基板を含み、および、外側表面部分が前記基板上に重なる被覆である請求項1に記載の方法。
- 前記基板は元素ケイ素を含む請求項12に記載の方法。
- 前記基板は、表面上に含浸した前記元素ケイ素を伴う炭化ケイ素を含む請求項14に記載の方法。
- ターゲット部分を、半導体加工作業での使用の前に除去する請求項1に記載の方法。
- ターゲット部分を除去する除去段階を繰り返す請求項1に記載の方法。
- ターゲット部分は少なくとも0.25μmの厚さを有する請求項1に記載の方法。
- ターゲット部分は少なくとも0.38μmの厚さを有する請求項1に記載の方法。
- ターゲット部分は少なくとも0.50μmの厚さを有する請求項1に記載の方法。
- ターゲット部分の除去の前に前記半導体加工用部品を機械加工することをさらに含む請求項1に記載の方法。
- 半導体加工用部品を処理する方法であって、
SiCの化学気相堆積によって形成された外側表面部分を有し、かつ、前記外側表面部分が内部不純物レベルと表面不純物レベルとを有する半導体加工用部品を用意することと、
前記表面不純物レベルが少なくとも10倍低減させられるように、前記外側表面部分のターゲット部分を除去すること、
とを含む方法。 - 前記表面不純物レベルは少なくとも100倍低減させられる請求項76に記載の方法。
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Also Published As
Publication number | Publication date |
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US20100062243A1 (en) | 2010-03-11 |
EP1620878A4 (en) | 2008-03-26 |
KR100786702B1 (ko) | 2007-12-21 |
TWI245348B (en) | 2005-12-11 |
EP1620878A2 (en) | 2006-02-01 |
JP2006526894A (ja) | 2006-11-24 |
US20040235231A1 (en) | 2004-11-25 |
US6825123B2 (en) | 2004-11-30 |
TW200507113A (en) | 2005-02-16 |
EP2339612A1 (en) | 2011-06-29 |
CN1856868A (zh) | 2006-11-01 |
CN101527256A (zh) | 2009-09-09 |
CN100479112C (zh) | 2009-04-15 |
US20040208815A1 (en) | 2004-10-21 |
JP5281027B2 (ja) | 2013-09-04 |
JP4598763B2 (ja) | 2010-12-15 |
KR20060063782A (ko) | 2006-06-12 |
WO2004093150A2 (en) | 2004-10-28 |
US7053411B2 (en) | 2006-05-30 |
WO2004093150A3 (en) | 2005-12-29 |
US20040209445A1 (en) | 2004-10-21 |
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