JP2014019871A - 高温熱アニーリング方法 - Google Patents
高温熱アニーリング方法 Download PDFInfo
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- JP2014019871A JP2014019871A JP2013143231A JP2013143231A JP2014019871A JP 2014019871 A JP2014019871 A JP 2014019871A JP 2013143231 A JP2013143231 A JP 2013143231A JP 2013143231 A JP2013143231 A JP 2013143231A JP 2014019871 A JP2014019871 A JP 2014019871A
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- Prior art keywords
- poly
- siloxane
- styrene
- film
- antioxidant
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- 239000003963 antioxidant agent Substances 0.000 claims abstract description 52
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Images
Classifications
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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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/02—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by thermal decomposition
- C23C18/04—Pretreatment of the material to be coated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
- H01L21/04—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
- 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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Abstract
【解決手段】当該方法はポリ(スチレン)−b−ポリ(シロキサン)ブロックコポリマー成分および酸化防止剤を含むコポリマー組成物のフィルムを基体の表面に適用し;場合によっては前記フィルムをベークし;前記フィルムを気体雰囲気下で特定の期間にわたって高温アニーリングプロセスにかけ;次いで、前記アニールされたフィルムからポリ(スチレン)を除去し、かつ前記アニールされたフィルム中のポリ(シロキサン)をSiOxに変換するように前記アニールされたフィルムの処理を行うことを含む。
【選択図】図2
Description
式
式
式
本発明は、マイクロスコピック(microscopic)エッチングまたはマイクロパターン形成された表面を必要とするデバイス(例えば、マイクロエレクトロニクス、マイクロセンサおよびバイオチップ)の構築において、後でのパターン転写処理において使用される、リソグラフィで有用なラインアンドスペースフィーチャを形成するための方法を提供する。本発明の方法は従来のリソグラフィ手段を用いて基体上に作成されたガイドパターンに対して整数倍で割りきれるピッチ寸法を有するパターンの作成を提供する。より小さな寸法、例えば、従来のリソグラフィ技術を使用して製造されうるものの2分の1、または4分の1で、その高解像パターンを形成する能力は、例えば、半導体チップの設計および製造において全く新たな技術を可能にする。
式
式
式
2リットルのガラス反応器内に、窒素雰囲気下で、シクロヘキサン(1,500g)が入れられた。次いで、カニューレを介して、この反応器にスチレン(50.34g)が入れられた。次いで、この反応器の内容物は40℃に加熱された。次いで、この反応器に、シクロヘキサン中で0.32Mの濃度に希釈されたsec−ブチルリチウム(19.18g)がカニューレを介して、素早く添加され、反応器内容物が黄色に変わった。この反応器の内容物は30分間攪拌された。次いで、この反応器の内容物は30℃に冷却された。次いで、エチレンオキシド(0.73g)がこの反応器に移された。この反応器の内容物は15分間攪拌された。次いで、メタノール中の1.4M HCl溶液20mLがこの反応器に入れられた。ついで、この反応器中のポリマーが、イソプロパノール中で、500mLのポリマー溶液対1,250mLのイソプロパノールの比率で、沈殿させられることによって、分離された。次いで、得られた沈殿はろ過され、真空オーブン内で60℃で一晩乾燥させられて、生成物であるヒドロキシル末端化ポリスチレンブラシ42gを生じさせた。この生成物であるヒドロキシル末端化ポリスチレンブラシは数平均分子量MN7.4kg/mol、および多分散度PD 1.07を示した。
500mLの丸底反応器に、アルゴン雰囲気下で、シクロヘキサン(90mL)およびスチレン(17.1g)が入れられた。次いで、シクロヘキサン中のsec−ブチルリチウムの1.4M溶液の0.7mLショットがこの反応器に、カニューレを介して素早く添加され、反応器の内容物が黄橙色に変化した。この反応器内容物は30分間攪拌された。次いで、形成されたポリスチレンブロックのゲル浸透クロマトグラフィ分析のために、この反応器内容物の少量がこの反応器から取り出されて、無水メタノールを収容している小さな丸底フラスコに入れられた。次いで、2,2,5,5−テトラメチルジシラフラン(472mg)がこの反応器に入れられた。橙色がゆっくりと薄くなり、そして1時間後に、反応器の内容物は薄黄色であった。次いで、10.5gの新たに昇華させられたヘキサメチルシクロトリシロキサンがこの反応器に移された。この反応器内容物が無色になるまで、この反応器内容物は1.5時間にわたって反応させられた。次いで、乾燥テトラヒドロフラン(90mL)がこの反応器に添加され、そしてこの反応は3.25時間にわたって進められた。次いで、クロロトリメチルシラン(1mL)がこの反応器に添加されてこの反応をクエンチした。生成物は500mLのメタノール中で沈殿させられ、ろ過することによって分離された。追加のメタノールで洗浄した後で、このポリマーは150mLの塩化メチレンに再溶解させられ、脱イオン水で3回洗浄され、次いで500mLのメタノール中で再沈殿させられた。次いで、このポリマーはろ過され、真空オーブン内で70℃で一晩乾燥させられて、20.5gを得た。このポリ(スチレン)−b−ポリ(ジメチルシロキサン)ブロックコポリマー生成物は、数平均分子量MN 24kg/mol、多分散度PD 1.01、および28重量%のポリ(ジメチルシロキサン)含有量(1H NMRで決定)を示した。
コポリマー組成物の調製
実施例2に従って調製されたPSt−b−PSiブロックコポリマーをプロピレングリコールメチルエーテルアセタート(ザダウケミカルカンパニーから入手可能なダウアノール(Dowanol(登録商標))PMA)に溶解させることにより、比較例S1および実施例3〜5のそれぞれにおける、フィルム堆積のための、1.6重量%の固形分の濃度を有するベーススピニング溶液が調製された。このベーススピニング溶液に表1に示される酸化防止剤が添加されて、最終スピニング溶液中に、示された濃度を生じさせた。
s商品名イルガフォス(IRGAFOS(登録商標))168でBASFから入手可能。
自然酸化物層を有するシリコン基体の表面上に、実施例1に従って製造されたヒドロキシル末端化ポリスチレンブラシのトルエン中の1.5重量%(固形分)溶液を3,000rpmで1分間にわたってスピンコーティングすることによって、自然酸化物層を有するシリコン基体の表面が修飾された。次いで、この基体は150℃にセットされたホットプレート上に1分間配置された。次いで、この基体は250℃にセットされたホットプレート上に窒素雰囲気下で20分間配置されて、堆積されたブラシ層をアニールした。次いで、この基体は、結合していないポリマーを洗い流すためにその基体をまずトルエン中に1分間浸漬することによりトルエンですすがれ、次いで3,000rpmで1分間回転乾燥させた。次いで、この基体は110℃にセットされたホットプレート上で1分間にわたってベークされた。
比較例S1、並びに実施例3〜4に従って調製されたスピニング溶液が、それぞれ、0.2μmのワットマンシリンジフィルタを用いて手作業でろ過された。比較例F1および実施例7〜8においては、次いで、それぞれ、比較例S1および実施例3〜4からの濾過された溶液が、実施例6に従って準備された別々のポリ(スチレン)ブラシ処理された基体上に、2,500rpmでスピンコートされた。次いで、これら基体は150℃にセットされたホットプレート上に1分間配置された。次いで、これら基体は、堆積フィルムをアニールするために、10ppm未満の酸素を含む窒素雰囲気下で1時間にわたって340℃にセットされたホットプレート上に置かれた。
Claims (10)
- 表面を有する基体を提供し;
ポリ(スチレン)−b−ポリ(シロキサン)ブロックコポリマー成分および酸化防止剤を含むコポリマー組成物を提供し、前記ポリ(スチレン)−b−ポリ(シロキサン)ブロックコポリマー成分の数平均分子量が5〜1,000kg/molであり;
前記基体の前記表面に前記コポリマー組成物のフィルムを適用し;
場合によっては、前記フィルムをベークし;
前記フィルムを275〜350℃で、気体雰囲気下で、1秒〜4時間の期間にわたって加熱することにより前記フィルムをアニールし;並びに、
前記アニールされたフィルムからポリ(スチレン)ブロックを除去し、かつ前記アニールされたフィルム中のポリ(シロキサン)ブロックをSiOxに変換するように前記アニールされたフィルムを処理する;
ことを含む、基体を処理する方法。 - 提供される前記ポリ(スチレン)−b−ポリ(シロキサン)ブロックコポリマー成分が、25〜1,000kg/molの数平均分子量MN、1〜3の多分散度PD、および0.19〜0.33のポリ(シロキサン)重量分率WfPSiを有する単一種のポリ(スチレン)−b−ポリ(シロキサン)ジブロックコポリマーである、請求項2の方法。
- 提供される前記コポリマー組成物がさらに溶媒を含み、前記溶媒がプロピレングリコールモノメチルエーテルアセタート(PGMEA)、エトキシエチルプロピオナート、アニソール、乳酸エチル、2−ヘプタノン、シクロヘキサノン、酢酸アミル、γ−ブチロラクトン(GBL)、n−メチルピロリドン(NMP)およびトルエンからなる群から選択される請求項4の方法。
- 前記ポリ(スチレン)−b−ポリ(シロキサン)ブロックコポリマー成分が少なくとも2種の異なるポリ(スチレン)−b−ポリ(シロキサン)ブロックコポリマーのブレンドであり、
前記少なくとも2種の異なるポリ(スチレン)−b−ポリ(シロキサン)ブロックコポリマーが1〜1,000kg/molの数平均分子量MN、および1〜3の多分散度PDを有するポリ(スチレン)−b−ポリ(シロキサン)ブロックコポリマーの群から選択され、並びに
前記ブレンドが25〜1,000kg/molのブレンド数平均分子量MN−ブレンドを示す、請求項2の方法。 - 前記ブレンドが0.19〜0.33のブレンドポリ(シロキサン)重量分率WfPSi−ブレンドを示す請求項6の方法。
- 提供される前記コポリマー組成物がさらに溶媒を含み、前記溶媒がプロピレングリコールモノメチルエーテルアセタート(PGMEA)、エトキシエチルプロピオナート、アニソール、乳酸エチル、2−ヘプタノン、シクロヘキサノン、酢酸アミル、γ−ブチロラクトン(GBL)、n−メチルピロリドン(NMP)およびトルエンからなる群から選択される請求項7の方法。
- 前記気体雰囲気が100ppm以下の酸素を有する窒素雰囲気である請求項1の方法。
- 請求項1の方法に従って処理された基体。
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