JP5285814B2 - 段階化キャップ層を有するパターニング可能low−k誘電体配線構造、エアギャップ包含配線構造、および製作方法 - Google Patents
段階化キャップ層を有するパターニング可能low−k誘電体配線構造、エアギャップ包含配線構造、および製作方法 Download PDFInfo
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- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 125000005353 silylalkyl group Chemical group 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000002174 soft lithography Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000002384 solvent-assisted micromoulding Methods 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 125000001273 sulfonato group Chemical class [O-]S(*)(=O)=O 0.000 description 1
- 150000003460 sulfonic acids Chemical class 0.000 description 1
- CXVGEDCSTKKODG-UHFFFAOYSA-N sulisobenzone Chemical compound C1=C(S(O)(=O)=O)C(OC)=CC(O)=C1C(=O)C1=CC=CC=C1 CXVGEDCSTKKODG-UHFFFAOYSA-N 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- WMOVHXAZOJBABW-UHFFFAOYSA-N tert-butyl acetate Chemical group CC(=O)OC(C)(C)C WMOVHXAZOJBABW-UHFFFAOYSA-N 0.000 description 1
- QVPBMCKCBQURHP-UHFFFAOYSA-N tert-butyl-(4-ethenylphenoxy)-dimethylsilane Chemical compound CC(C)(C)[Si](C)(C)OC1=CC=C(C=C)C=C1 QVPBMCKCBQURHP-UHFFFAOYSA-N 0.000 description 1
- 150000008027 tertiary esters Chemical group 0.000 description 1
- 150000005622 tetraalkylammonium hydroxides Chemical class 0.000 description 1
- 125000003718 tetrahydrofuranyl group Chemical group 0.000 description 1
- 125000001412 tetrahydropyranyl group Chemical group 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- UZIAQVMNAXPCJQ-UHFFFAOYSA-N triethoxysilylmethyl 2-methylprop-2-enoate Chemical compound CCO[Si](OCC)(OCC)COC(=O)C(C)=C UZIAQVMNAXPCJQ-UHFFFAOYSA-N 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- UOKUUKOEIMCYAI-UHFFFAOYSA-N trimethoxysilylmethyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)COC(=O)C(C)=C UOKUUKOEIMCYAI-UHFFFAOYSA-N 0.000 description 1
- PGQNYIRJCLTTOJ-UHFFFAOYSA-N trimethylsilyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)O[Si](C)(C)C PGQNYIRJCLTTOJ-UHFFFAOYSA-N 0.000 description 1
- OTYBJBJYBGWBHB-UHFFFAOYSA-N trimethylsilyl prop-2-enoate Chemical compound C[Si](C)(C)OC(=O)C=C OTYBJBJYBGWBHB-UHFFFAOYSA-N 0.000 description 1
- NYHMLROEJNBVEF-UHFFFAOYSA-N tris(trimethylsilyloxy)silylmethyl 2-methylprop-2-enoate Chemical compound CC(=C)C(=O)OC[Si](O[Si](C)(C)C)(O[Si](C)(C)C)O[Si](C)(C)C NYHMLROEJNBVEF-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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Description
ビス−エポキシ類またはビス−フェノール類(例えば、ビスフェノール−A)等の他の架橋剤が用いられてもよい。架橋剤の組み合わせが用いられてもよい。架橋成分はSi含有ポリマー骨格に化学結合されてよい。
Claims (23)
- パターニングされた段階化キャップ層の表面上に直接配される少なくとも1つのパターニングされ且つ硬化されたlow−k物質を含む配線構造であって、
前記少なくとも1つのパターニングされ且つ硬化されたlow−k物質および前記パターニングされた段階化キャップ層はその中に組み込まれる導電的充填領域を各々有し、前記パターニングされ且つ硬化されたlow−k物質は、1つ以上の光/酸感受性イメージング可能基を有する機能性ポリマー、コポリマー、または少なくとも2種の任意の組み合わせのポリマー類もしくはコポリマー類またはその両方を含むブレンドを含むパターニング可能組成物の硬化生成物であり、前記段階化キャップ層は、バリア領域として機能する下部領域および恒久的な反射防止膜の特性を有する上部領域を含み、前記下部領域および前記上部領域の間には少なくとも1つの中間領域が配され、前記下部領域および前記上部領域は前記少なくとも1つの中間領域によって隔てられ、前記段階化キャップ層は、垂直方向に沿って徐々に変化させた組成を有する、配線構造。 - 当該少なくとも1つのパターニングされ且つ硬化されたlow−k物質内に、前記導電的充填領域に、直接には接触しないが、隣接して配される少なくとも1つのエアギャップをさらに含む、請求項1に記載の配線構造。
- 前記少なくとも1つの中間領域は反射防止前駆体および誘電体キャップ前駆体の組み合わせから得られる、請求項1に記載の配線構造。
- 前記段階化キャップ層の前記下部領域はSiおよびCの原子、SiおよびNの原子、SiおよびOの原子、Si、OおよびNの原子、Si、CおよびOの原子、Si、C、OおよびHの原子、あるいはSi、C、NおよびHの原子を含む、請求項1に記載の配線構造。
- 前記段階化キャップ層の前記下部領域はRu、Co、WおよびPの原子を含む、請求項1に記載の配線構造。
- 前記段階化キャップ層は2nmないし200nmの厚みのレンジを有する、請求項1に記載の配線構造。
- 前記上部領域はSi、C、O、NおよびHの原子、SiおよびCの原子、Si、OおよびCの原子、Si、C、OおよびHの原子、ならびにW、Co、Ru、Ta、Ti、およびRuの原子を含む、請求項1に記載の配線構造。
- 前記上部領域はM、CおよびHの原子を含み、ただし、MはSi、Ge、B、Sn、Fe、Ta、Ti、Ni、HfおよびLaのうちの少なくとも1つの原子から選択される、請求項1に記載の配線構造。
- 前記上部領域は、蒸着されたM:C:H膜を含み、ただし、MはSi、Ge、B、Sn、Fe、Ta、Ti、Ni、HfおよびLaのうちの少なくとも1つの原子から選択される、請求項1に記載の配線構造。
- Xをさらに含み、Xは、O、N、SまたはFのうちの少なくとも1つの原子である、請求項9に記載の配線構造。
- 前記上部領域は、式M−RAの少なくとも1つのモノマー単位を有するポリマーを含み、ただし、MはSi、Ge、B、Sn、Fe、Ta、Ti、Ni、HfおよびLaの元素のうちの少なくとも1つであり、RAは発色団である、請求項1に記載の配線構造。
- 前記少なくとも1つのモノマー単位のMは、CおよびHの元素、架橋成分、別の発色団ならびにそれらの混合物から選択される有機配位子に結合される、請求項11に記載の配線構造。
- 式M’−RBを有する別のモノマー単位をさらに含み、ただし、M’はSi、Ge、B、Sn、Fe、Ta、Ti、Ni、HfおよびLaの元素のうちの少なくとも1つであり、RBは架橋成分である、請求項11に記載の配線構造。
- MおよびM’は、CおよびHの元素、架橋成分、別の発色団ならびにそれらの混合物から選択される有機配位子に結合される、請求項11に記載の配線構造。
- パターニングされた段階化キャップ層上に直接配される下部のパターニングされ且つ硬化されたlow−k物質と、前記下部のパターニングされ且つ硬化されたlow−k物質上に配される、接触する上部のパターニングされ且つ硬化されたlow−k物質と、を含む配線構造であって、
前記下部および上部のパターニングされ且つ硬化されたlow−k物質ならびに前記パターニングされたキャップ層は導電的充填領域を各々有し、前記パターニングされ且つ硬化された上部および下部のlow−k物質は各々、1つ以上の光/酸感受性イメージング可能基を有する機能性ポリマー、コポリマー、あるいは少なくとも2種の任意の組み合わせのポリマー類もしくはコポリマー類またはその両方を含むブレンドを含む同じまたは異なるパターニング可能組成物の硬化生成物であり、前記段階化キャップ層は、バリア領域として機能する下部領域および恒久的な反射防止膜の特性を有する上部領域を含み、前記下部領域および前記上部領域の間には少なくとも1つの中間領域が配され、前記下部領域および前記上部領域は前記少なくとも1つの中間領域によって隔てられ、前記段階化キャップ層は、垂直方向に沿って徐々に変化させた組成を有する、配線構造。 - 前記少なくとも1つの中間領域は反射防止前駆体および誘電体キャップ前駆体の組み合わせから得られる、請求項15に記載の配線構造。
- パターニングされた段階化キャップ層上に直接配される下部のパターニングされ且つ硬化されたlow−k物質と、前記下部のパターニングされ且つ硬化されたlow−k物質上に配される、接触する上部のパターニングされ且つ硬化されたlow−k物質と、を含むエアギャップ包含配線構造であって、
前記下部および上部のパターニングされ且つ硬化されたlow−k物質ならびに前記パターニングされたキャップ層は導電的充填領域を各々有し、前記パターニングされ且つ硬化された上部および下部のlow−k物質は各々、1つ以上の光/酸感受性イメージング可能基を有する機能性ポリマー、コポリマー、あるいは少なくとも2種の任意の組み合わせのポリマー類もしくはコポリマー類またはその両方を含むブレンドを含む同じまたは異なるパターニング可能組成物の硬化生成物であり、前記段階化キャップ層は、バリア領域として機能する下部領域および恒久的な反射防止膜の特性を有する上部領域を含み、前記下部領域および前記上部領域の間には少なくとも1つの中間領域が配され、前記下部領域および前記上部領域は前記少なくとも1つの中間領域によって隔てられ、前記段階化キャップ層は、垂直方向に沿って徐々に変化させた組成を有する、エアギャップ包含配線構造。 - 基板の表面上に段階化キャップ層を提供することであって、前記段階化キャップ層は、バリア領域として機能する下部領域および恒久的な反射防止膜の特性を有する上部領域を含み、前記下部領域および前記上部領域の間には少なくとも1つの中間領域が配され、前記下部領域および前記上部領域は前記少なくとも1つの中間領域によって隔てられ、前記段階化キャップ層は、垂直方向に沿って徐々に変化させた組成を有する、提供することと、
前記段階化キャップ層の表面上に直接少なくとも1つのパターニング可能low−k物質を提供することであって、前記少なくとも1つのパターニング可能low−k物質は、1つ以上の光/酸感受性イメージング可能基を有する機能性ポリマー、コポリマー、あるいは少なくとも2種の任意の組み合わせのポリマー類もしくはコポリマー類またはその両方を含むブレンドを含むパターニング可能組成物である、提供することと、
前記少なくとも1つのパターニング可能low−k物質および前記段階化キャップ層内に少なくとも1つの配線パターンを形成することであって、前記少なくとも1つのパターニング可能low−k物質内の前記少なくとも1つの配線パターンは、独立したフォトレジスト物質を利用することなく形成される、形成することと、
前記少なくとも1つのパターニングされたパターニング可能low−k物質を、4.3以下の誘電率を有する硬化された誘電体物質に硬化させることと、
前記少なくとも1つの配線パターンに導電性物質を充填することと、
を含む、配線構造の製作方法。 - 前記硬化された誘電体物質上に、別の段階化キャップ層およびブロック・マスクを含むスタックを形成することと、
前記スタックを貫き、硬化された誘電体物質内に少なくとも1つのエアギャップを形成することと、
前記スタックの前記別の段階化キャップ上にエアギャップ・キャップを形成することとと、
をさらに含む、請求項18に記載の方法。 - 前記スタックを貫き、前記硬化された誘電体物質内に少なくとも1つのエアギャップを前記形成することはギャップ転写プロセスを含み、それに、前記硬化された誘電体物質の、その内部に転写された、前記エアギャップのパターンに直接隣接する部分の物理的もしくは化学的変更またはその両方、ならびに前記硬化された誘電体物質の前記変更された部分の選択的除去が続く、請求項19に記載の方法。
- 前記パターニングされた段階化キャップ層は堆積、リソグラフィおよびエッチングによって形成され、前記堆積は気相成長、液相成長あるいは気相および液相成長の組み合わせを含む、請求項18に記載の方法。
- 基板の表面上に段階化キャップ層を提供することであって、前記段階化キャップ層は、バリア領域として機能する下部領域および恒久的な反射防止膜の特性を有する上部領域を含み、前記下部領域および前記上部領域の間には少なくとも1つの中間領域が配され、前記下部領域および前記上部領域は前記少なくとも1つの中間領域によって隔てられ、前記段階化キャップ層は、垂直方向に沿って徐々に変化させた組成を有する、提供することと、
前記段階化キャップ層の表面上に直接第1のパターニング可能low−k物質を提供することであって、第1のパターニング可能low−k誘電体物質は、1つ以上の光/酸感受性イメージング可能基を有する機能性ポリマー、コポリマー、あるいは少なくとも2種の任意の組み合わせのポリマー類もしくはコポリマー類またはその両方を含むブレンドを含むパターニング可能組成物である、提供することと、
独立したフォトレジストを用いることなく前記第1のパターニング可能low−k物質内に第1の配線パターンを形成することと、
前記第1の配線パターンを含む前記第1のパターニングされたlow−k物質上に、前記第1のパターニング可能low−k物質と同じまたは異なる組成を有する第2のパターニング可能low−k物質を提供することと、
独立したフォトレジストを用いることなく前記第2のパターニング可能low−k物質内に第2の配線パターンを形成することと、
少なくとも前記第2のパターニングされたパターニング可能low−k物質を硬化させることと、
前記段階化キャップ層の露出部分を開くことと、
前記第1および第2の配線パターンならびに前記段階化キャップ層内の開口部に導電性物質を充填することと、
を含む、デュアル・ダマシン配線構造の製作方法。 - 前記硬化された第2のパターニング可能low−k物質上に配される別の段階化キャップおよびブロック・マスクを含むスタックを形成することと、
前記スタックを貫き、少なくとも前記硬化された第2のパターニング可能low−k物質内に少なくとも1つのエアギャップを形成することと、
前記スタックの前記別の段階化キャップ上にエアギャップ・キャップを形成することと、
をさらに含む、請求項22に記載の方法。
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- 2010-08-23 CN CN201080042435.2A patent/CN102549736B/zh active Active
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DE112010003844T5 (de) | 2012-09-06 |
WO2011038995A1 (en) | 2011-04-07 |
US20120252204A1 (en) | 2012-10-04 |
US8461039B2 (en) | 2013-06-11 |
CN102549736A (zh) | 2012-07-04 |
US8202783B2 (en) | 2012-06-19 |
TWI496242B (zh) | 2015-08-11 |
US20110074044A1 (en) | 2011-03-31 |
JP2013502714A (ja) | 2013-01-24 |
TW201131695A (en) | 2011-09-16 |
CN102549736B (zh) | 2014-09-10 |
GB2486078B (en) | 2014-05-07 |
GB2486078A (en) | 2012-06-06 |
GB201200146D0 (en) | 2012-02-15 |
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