JP7065076B2 - 金属含有レジストからのエッジビード領域における金属残留物を低減する方法 - Google Patents
金属含有レジストからのエッジビード領域における金属残留物を低減する方法 Download PDFInfo
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- JP7065076B2 JP7065076B2 JP2019507178A JP2019507178A JP7065076B2 JP 7065076 B2 JP7065076 B2 JP 7065076B2 JP 2019507178 A JP2019507178 A JP 2019507178A JP 2019507178 A JP2019507178 A JP 2019507178A JP 7065076 B2 JP7065076 B2 JP 7065076B2
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Images
Classifications
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- C11D3/362—Phosphates or phosphites
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- C11D7/5022—Organic solvents containing oxygen
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- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/004—Photosensitive materials
- G03F7/0042—Photosensitive materials with inorganic or organometallic light-sensitive compounds not otherwise provided for, e.g. inorganic resists
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- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
- G03F7/16—Coating processes; Apparatus therefor
- G03F7/162—Coating on a rotating support, e.g. using a whirler or a spinner
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- G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
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- G03F7/168—Finishing the coated layer, e.g. drying, baking, soaking
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- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
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- G03F7/26—Processing photosensitive materials; Apparatus therefor
- G03F7/42—Stripping or agents therefor
- G03F7/422—Stripping or agents therefor using liquids only
- G03F7/425—Stripping or agents therefor using liquids only containing mineral alkaline compounds; containing organic basic compounds, e.g. quaternary ammonium compounds; containing heterocyclic basic compounds containing nitrogen
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02041—Cleaning
- H01L21/02082—Cleaning product to be cleaned
- H01L21/02087—Cleaning of wafer edges
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
- H01L21/0271—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers
- H01L21/0273—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34 comprising organic layers characterised by the treatment of photoresist layers
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- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67028—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
- H01L21/6704—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing
- H01L21/67051—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing using mainly spraying means, e.g. nozzles
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Description
本出願は、2016年8月12日に出願されたClarkらに対する「Bead Washing for Metal Oxide Based Resists」という名称の同時係争中の米国仮特許出願第62/374,582号明細書および2016年12月6日に出願されたCardineauらに対する「Method of Reducing Metal Residue in Edge Bead Region from Metal-Containing Resists」という名称の同時係争中の米国仮特許出願第62/430,722号明細書に対する優先権を主張するものであり、それらの両方が参照により本明細書に組み込まれる。
本実施例は、スズベースの放射線パターニング可能レジストを用いた効果的な残留物除去を行うためのカルボン酸添加剤を含む有機溶媒の有効性を実証する。
本実施例は、スズベースの放射線パターニング可能レジストを用いた効果的なビードエッジリンスを行うためのフッ素化酸添加剤を含む有機溶媒の有効性を実証する。
本実施例は、ウエハの表面にわたって犠牲層を塗布することに基づくEBR処理の改善を実証する。
本実施例は、ウエハ上に付着防止エッジコーティングを塗布することに基づくEBR処理の改善を実証する。
Claims (25)
- スズ有機金属のレジスト組成物を含むレジストコーティングに関連したウエハ上のエッジビードを除去するための方法であって、前記スズ有機金属のレジスト組成物で前記ウエハをスピンコーティングした後、ウエハエッジに沿って第1のエッジビードリンス溶液を塗布するステップを含み、前記第1のエッジビードリンス溶液は、有機溶媒と、カルボン酸、スルホン酸、硫酸(H2SO4)、リン酸エステル、リン酸、無機フッ素化酸、テトラアルキルアンモニウム化合物またはそれらの混合物を含む添加剤とを含み、
VPD-ICP-MSを用いて、前記ウエハエッジに沿った残留スズ測定値が50×1010原子/cm2以下である、方法。 - 前記スズ有機金属のレジスト組成物は、アルキルオキソ/ヒドロキソスズ部分を含む、請求項1に記載の方法。
- 前記第1のエッジビードリンス溶液は、前記ウエハエッジに沿って0.5mL~20mLの量で塗布され、前記方法は、前記第1のエッジビードリンス溶液の送達後、少なくとも500rpmの速度で前記ウエハをスピン回転させて、前記残留スズ測定値を得るステップをさらに含む、請求項1または2に記載の方法。
- 前記塗布するステップおよび前記スピン回転させるステップは、前記第1のエッジビードリンス溶液を用いて1回~20回繰り返される、請求項3に記載の方法。
- 前記塗布するステップおよび前記スピン回転させるステップは、前記第1のエッジビードリンス溶液とは別の第2のエッジビードリンス溶液を用いて、前記ステップを少なくとも1回繰り返して1回~20回繰り返される、請求項3に記載の方法。
- 前記有機溶媒は、グリコールエーテルもしくはそのエステル、アルコール、ケトン、液体環状炭酸塩またはそれらの混合物を含む、請求項1~5のいずれか一項に記載の方法。
- 前記添加剤は、酢酸、クエン酸、シュウ酸、2-ニトロフェニル酢酸、2-エチルヘキサン酸、ドデカン酸、アスコルビン酸、酒石酸、グルクロン酸、ベンゼンスルホン酸、p-トルエンスルホン酸、硫酸(H2SO4)またはそれらの混合物を含む、請求項1~6のいずれか一項に記載の方法。
- 前記添加剤は、ヘキサフルオロケイ酸を含む、請求項1~6のいずれか一項に記載の方法。
- 前記添加剤は、テトラメチルアンモニウムフルオリド、テトラブチルアンモニウムフルオリド、テトラブチルアンモニウムフルオロケイ酸またはそれらの混合物を含む、請求項1~6のいずれか一項に記載の方法。
- 放射線ベースのパターニングのためのウエハを準備するための方法であって、
前記ウエハに保護組成物を塗布するステップと、
前記保護組成物を塗布した後、金属ベースの放射線感受性レジスト組成物をスピンコーティングするステップと、
前記金属ベースの放射線感受性レジスト組成物をスピンコーティングした後、前記ウエハのエッジに沿ったエッジビードリンス溶液の塗布を通してエッジビードリンスを行うステップと
を含む方法。 - 前記保護組成物は、前記ウエハのエッジに沿って塗布される、請求項10に記載の方法。
- 前記保護組成物は、25℃で30ダイン/cm以下の乾燥臨界表面張力を有する不揮発性成分を含む、請求項11に記載の方法。
- 前記不揮発性成分は、フッ化ビニル重合体またはアルキルハロゲン化シランを含む、請求項12に記載の方法。
- 前記保護組成物は、前記エッジに沿った金属の除去を容易にする犠牲ポリマー材料を含む、請求項10または11に記載の方法。
- 前記犠牲ポリマー材料は、ポリスチレンである、請求項14に記載の方法。
- 前記保護組成物は、0.5mL~20mLの量で塗布され、前記方法は、前記保護組成物の送達後、少なくとも500rpmの速度で前記ウエハをスピン回転させるステップをさらに含み、
前記保護組成物は、25℃で50ダイン/cm以下の乾燥臨界表面張力を有する不揮発性成分を含む、請求項10~15のいずれか一項に記載の方法。 - 前記エッジビードリンス溶液は、グリコールエーテルもしくはそのエステル、アルコール、ケトン、液体環状炭酸塩またはそれらの混合物を含む有機溶媒を含む、請求項10~16のいずれか一項に記載の方法。
- 前記エッジビードリンス溶液は、カルボン酸、糖酸、スルホン酸、リン酸、硫酸(H2SO4)、無機フルオロ酸、テトラアルキルアンモニウム化合物またはそれらの混合物を含む添加剤を含む、請求項17に記載の方法。
- エッジビード除去を実施するための装置であって、
ウエハ支持体を含むスピンドルであって、前記スピンドルを回転させるように構成されたモータに動作可能に接続される、スピンドルと、
スズ有機金属レジスト組成物の表面層を含むウエハと、
前記スピンドルに装着されたウエハのエッジに沿って流体を塗布させるように構成されたノズルを有するディスペンサと、
分配するために前記流体を前記ノズルに送達するように構成された流体の貯留部と
を含み、前記流体は、カルボン酸、スルホン酸、硫酸(H2SO4)、リン酸エステル、リン酸、無機フッ素化酸、テトラアルキルアンモニウム化合物またはそれらの混合物、25℃で30ダイン/cm以下の乾燥臨界表面張力を有する犠牲ポリマーまたは化合物、を含む添加剤を加えた有機溶媒を含む、装置。 - 前記スピンドルは、中空コアを有し、および前記ウエハ支持体は、前記中空コア内に負圧を加えて、前記負圧に基づいて、前記スピンドル上に支持されたウエハを保持するように構成された負圧装置を含む、請求項19に記載の装置。
- 前記有機溶媒は、グリコールエーテルもしくはそのエステル、アルコール、ケトン、液体環状炭酸塩またはそれらの混合物を含む、請求項19または20に記載の装置。
- 前記有機溶媒は、プロピレングリコールメチルエーテル(PGME)、プロピレングリコールメチルエチルアセテート(PGMEA)、プロピレングリコールブチルエーテル(PGBE)、エチレングリコールメチルエーテル、エタノール、プロパノール、イソブチルアルコール、ヘキサノール、エチレングリコール、プロピレングリコール、ヘプタノン、炭酸プロピレン、炭酸ブチレンまたはそれらの混合物を含む、請求項19または20に記載の装置。
- 前記流体は、濃度が0.1重量%~25重量%である前記添加剤を含む、請求項19~22のいずれか一項に記載の装置。
- 前記添加剤は、糖酸を含む、請求項19~23のいずれか一項に記載の装置。
- 装置であって、
ウエハ支持体を含むスピンドルであって、前記スピンドルを回転させるように構成されたモータに動作可能に接続される、スピンドルと、
前記スピンドルに装着されたウエハのエッジに沿って流体を塗布させるように構成されたノズルを有するディスペンサと、
分配するために前記流体を前記ノズルに送達するように構成された流体の貯留部と
を含み、前記流体は、25℃で30ダイン/cm以下の乾燥臨界表面張力を有する犠牲ポリマーまたは化合物、を含む添加剤を加えた有機溶媒を含む、装置。
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