JP4272013B2 - 半導体デバイス製造の際の欠陥低減方法及び処理溶液 - Google Patents
半導体デバイス製造の際の欠陥低減方法及び処理溶液 Download PDFInfo
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- JP4272013B2 JP4272013B2 JP2003292481A JP2003292481A JP4272013B2 JP 4272013 B2 JP4272013 B2 JP 4272013B2 JP 2003292481 A JP2003292481 A JP 2003292481A JP 2003292481 A JP2003292481 A JP 2003292481A JP 4272013 B2 JP4272013 B2 JP 4272013B2
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- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 description 1
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Images
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- G03F7/091—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers characterised by antireflection means or light filtering or absorbing means, e.g. anti-halation, contrast enhancement
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- G03F7/422—Stripping or agents therefor using liquids only
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Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Photosensitive Polymer And Photoresist Processing (AREA)
- Cleaning Or Drying Semiconductors (AREA)
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- Materials For Photolithography (AREA)
Description
を有する少なくとも1種の界面活性剤を約10ppm〜約10,000ppm含む処理溶液と接触させる工程を含む。特定の好ましい態様では、処理溶液は分散剤を更に含む。
を有する少なくとも1種の界面活性剤を約10ppm〜約10,000ppm含む処理溶液と接触させる工程を含む。特定の好ましい態様では、界面活性剤の(p+q)の値は1〜10の範囲にある。
を有する少なくとも1種の界面活性剤を約10〜約10,000ppm有する処理溶液が提供される。
を有する界面活性剤を約10〜約10,000ppm含む処理溶液が提供される。
2,4,7,9−テトラメチル−5−デシン−4,7−ジオール(例1〜3)又は2,5,8,11−テトラメチル−6−ドデシン−5,8−ジオール(例4、5)から得られたアセチレン列ジオール界面活性剤を含有している5つの処理溶液を、連続撹拌下で0.1質量%の界面活性剤を脱イオン水に加えて調製した。
2,4,7,9−テトラメチル−5−デシン−4,7−ジオール(例6、7)又は2,5,8,11−テトラメチル−6−ドデシン−5,8−ジオール(例8)から得られたアセチレン列ジオール界面活性剤を含有している3つの処理溶液を、0.1質量%の各界面活性剤を連続撹拌下に脱イオン水に加えて調製した。
2,4,7,9−テトラメチル−5−デシン−4,7−ジオール(例9a、9b)又は2,5,8,11−テトラメチル−6−ドデシン−5,8−ジオール(例10a、10b)から得られた界面活性剤を種々の量含有している処理溶液と、比較としての脱イオン水(比較例1)の湿潤特性を、Sessileドロップ法を使用し、米国ノースカロライナ州CharlotteのKruss USAにより供給されるG10/DSA10 Kruss液滴形状分析器(drop shape analyzer)により測定した。この方法では、ホトレジストをコーティングした基材の表面の局所領域の湿潤特性を、水性現像液の小滴のベースラインと小滴底面における接線とのなす接触角を測定することにより評価する。高速カメラにより1秒当たり2フレームの速度で小滴の広がるのを2分間撮影し、そして接触角を測定した。
基材上の現像後欠陥数を、基材を脱イオン水のリンス液(比較例2)で処理後と本発明の処理溶液を含有するリンス液(例11)で処理後に比較した。この処理溶液は、2,5,8,11−テトラメチル−6−ドデシン−5,8−ジオールから得られた界面活性剤を50ppm、そしてElf Alfochem社により供給されるオリゴマー分散剤SMA(商標) 1440を170ppm含有していた。基材を次のようにして処理した。ホトレジストをコーティングした基材を365nmの光で露光し、およそ110℃の温度に約1分間加熱し、その後希釈TMAH溶液で現像してパターニングしたホトレジストを形成した。TMAH溶液は、基材上へ0.21NのTMAH溶液を100秒間動的に供給することにより適用した。
平衡表面張力(EST)及び動的表面張力(DST)を比べるために、2,5,8,11−テトラメチル−6−ドデシン−5,8−ジオールから得られた界面活性剤を0.1質量%含有する処理溶液と、米国ミズーリ州セントルイスの3M社により供給されるフルオロ界面活性剤のカリウムパーフルオロオクタンカルボキシレートを0.1質量%含有する処理溶液を調製した。両方の溶液についてESTを、米国ノースカロライナ州CharlotteのKruss, Inc.製のKruss BP2気泡圧力張力計によりWilhemyプレート法を使用して測定した。各処理溶液のDSTを、例1〜5で使用した最大気泡圧力法により測定した。EST及びDST試験の結果を表VIIに示す。
式I〜VIIIを有する界面活性剤を含有していて、現像後リンス液として使用できる10の処理溶液を、1質量%未満の界面活性剤を連続撹拌下に脱イオン水に加えることにより調製した。各処理溶液中の界面活性剤の濃度は表VIIIに示され、界面活性剤ごとに種々の濃度で計算された最小の付着張力値により決定される。例13は、3,5−ジメチル−1−ヘキシン−3−オール(式III)を含有していた。例14は、Aldrich社により供給される2,6−ジメチル−4−ヘプタノール(式III)を含有していた。例15は、N,N’−ビス(1,3−ジメチルブチル)エチレンジアミン(式IVb)を含有していた。例16は、酒石酸ジイソペンチル(式V)を含有していた。例17は、ドデシルトリメチルアンモニウムクロライド(式VI)を含有していた。例18は、2,4,7,9−テトラメチル−4,7−デカンジオール(式VII)を含有していた。例19は、2,5,8,11−テトラメチル−6−ドデシン−5,8−ジオールから得られた界面活性剤(式II)を含有していた。例20、21、22はそれぞれ、ジエチレントリアミン(x=2)とn−ブチルグリシジルエーテル(式VIII)の、それぞれ1:3付加物(濃度0.05wt%)、1:5付加物(濃度0.012wt%)、1:5付加物(濃度0.03wt%)を含有していた。
例13、15、18の処理溶液を、それぞれ、0.9質量%の3,5−ジメチル−1−ヘキシン−3−オール、0.095質量%のN,N’−ビス(1,3−ジメチルブチル)エチレンジアミン、0.05質量%の2,4,7,9−テトラメチル−4,7−デカンジオールを連続撹拌下で脱イオン水に加えて調製した。基材を、次のようにして処理した。Wafernet Inc.により供給され、反射防止コーティングを被覆したシリコンウエハにTOK 6063 193nmホトレジストを塗布し、ASML PAS 5500/1100スキャナを用いて193nmの光に露光し、およそ115℃の温度に約1分間加熱し、次いで希TMAH溶液で現像してパターニングしたホトレジストを形成した。TMAH現像液は、0.26NのTMAH溶液を基材上へ動的供給し45秒間静置して適用した。次に、処理溶液を基材表面へ動的供給しながら、ウエハ基材を500rpmでゆっくり回転させて溶液を基材表面に分配した。この供給処理を15秒間続けた。その後、基材を3,500rpmで回転して乾燥させた。
Claims (13)
- 半導体デバイス製造の際のパターンつぶれの欠陥数を低減するための方法であって、
ホトレジストコーティングを含む基材を用意する工程、
当該基材を放射線源に暴露してホトレジストコーティングにパターンを形成するパターン形成工程、
当該基材に現像液を適用してパターン化したホトレジストコーティングを形成するパターン化ホトレジストコーティング形成工程、
随意に当該基材を脱イオン水でリンスするリンス工程、及び
当該基材を、少なくとも1種の溶媒と、次の式(IVb)
を有する少なくとも1種の界面活性剤10ppm〜10,000ppmとから本質的になる現像後リンス液と接触させる接触工程、
を含む、半導体デバイス製造の際のパターンつぶれ欠陥数の低減方法。 - 前記接触工程が前記基材を前記現像後リンス液での動的なリンス又は静的なリンスにさらすことを含む、請求項1記載の方法。
- 前記接触工程において前記基材の表面が前記現像液に濡れる、請求項1記載の方法。
- 前記接触工程において前記基材の表面が前記脱イオン水のリンス液に濡れる、請求項1記載の方法。
- 前記溶媒が水性溶媒を含む、請求項1記載の方法。
- 前記溶媒が非水性溶媒を含み、当該非水性溶媒が前記水性溶媒と混和性である、請求項5記載の方法。
- 10〜10,000ppmの前記少なくとも1種の界面活性剤を前記溶媒中へ注入することにより前記現像後リンス液を作る、請求項1記載の方法。
- 10〜10,000ppmの前記少なくとも1種の界面活性剤を前記基材の表面へ適用しそして前記溶媒を当該基材表面へ適用することにより前記現像後リンス液を作る、請求項1記載の方法。
- 前記溶媒を前記少なくとも1種の界面活性剤を含むカートリッジを通過させることにより前記現像後リンス液を作る、請求項1記載の方法。
- 前記接触工程の時間が1〜200秒の範囲である、請求項1記載の方法。
- 前記接触工程の時間が1〜150秒の範囲である、請求項10記載の方法。
- 前記接触工程の時間が1〜40秒の範囲である、請求項11記載の方法。
- 前記接触工程の少なくとも一つの温度が10〜100℃の範囲である、請求項1記載の方法。
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Cited By (3)
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JP2008181137A (ja) * | 2002-08-12 | 2008-08-07 | Air Products & Chemicals Inc | 半導体デバイス製造の際のパターンつぶれ欠陥数の低減方法及びリンス処理溶液 |
US11079677B2 (en) | 2017-02-20 | 2021-08-03 | Fujifilm Corporation | Chemical liquid, chemical liquid storage body, and pattern forming method |
TWI742246B (zh) * | 2017-02-20 | 2021-10-11 | 日商富士軟片股份有限公司 | 藥液、藥液收容體及圖案形成方法 |
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US20070010409A1 (en) | 2007-01-11 |
US20040053800A1 (en) | 2004-03-18 |
TW200408700A (en) | 2004-06-01 |
JP2006201809A (ja) | 2006-08-03 |
US20100304313A1 (en) | 2010-12-02 |
JP4354964B2 (ja) | 2009-10-28 |
KR20040030253A (ko) | 2004-04-09 |
JP2004078217A (ja) | 2004-03-11 |
US7129199B2 (en) | 2006-10-31 |
EP1389746A3 (en) | 2007-05-30 |
TWI247799B (en) | 2006-01-21 |
EP1389746A2 (en) | 2004-02-18 |
US7591270B2 (en) | 2009-09-22 |
US20070010412A1 (en) | 2007-01-11 |
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