JP5562651B2 - 化学増幅型フォトレジスト用樹脂及びその製造方法 - Google Patents
化学増幅型フォトレジスト用樹脂及びその製造方法 Download PDFInfo
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- JP5562651B2 JP5562651B2 JP2009550449A JP2009550449A JP5562651B2 JP 5562651 B2 JP5562651 B2 JP 5562651B2 JP 2009550449 A JP2009550449 A JP 2009550449A JP 2009550449 A JP2009550449 A JP 2009550449A JP 5562651 B2 JP5562651 B2 JP 5562651B2
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- 238000007086 side reaction Methods 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005063 solubilization Methods 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
- 150000003459 sulfonic acid esters Chemical class 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- OPQYOFWUFGEMRZ-UHFFFAOYSA-N tert-butyl 2,2-dimethylpropaneperoxoate Chemical compound CC(C)(C)OOC(=O)C(C)(C)C OPQYOFWUFGEMRZ-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 125000006337 tetrafluoro ethyl group Chemical group 0.000 description 1
- 125000002827 triflate group Chemical group FC(S(=O)(=O)O*)(F)F 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- WLOQLWBIJZDHET-UHFFFAOYSA-N triphenylsulfonium Chemical compound C1=CC=CC=C1[S+](C=1C=CC=CC=1)C1=CC=CC=C1 WLOQLWBIJZDHET-UHFFFAOYSA-N 0.000 description 1
- 239000012953 triphenylsulfonium Substances 0.000 description 1
- RSJKGSCJYJTIGS-BJUDXGSMSA-N undecane Chemical group CCCCCCCCCC[11CH3] RSJKGSCJYJTIGS-BJUDXGSMSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N urethane group Chemical group NC(=O)OCC JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
- 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
- G03F7/039—Macromolecular compounds which are photodegradable, e.g. positive electron resists
- G03F7/0392—Macromolecular compounds which are photodegradable, e.g. positive electron resists the macromolecular compound being present in a chemically amplified positive photoresist composition
- G03F7/0397—Macromolecular compounds which are photodegradable, e.g. positive electron resists the macromolecular compound being present in a chemically amplified positive photoresist composition the macromolecular compound having an alicyclic moiety in a side chain
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Materials For Photolithography (AREA)
Description
で表される繰り返し構造単位の双方を少なくとも有する高分子化合物(A)と、下記一般式(III)
で表される化合物(B)とを触媒存在下反応させて得られる化学増幅型フォトレジスト用樹脂であり、前記高分子化合物(A)の重量平均分子量が500〜10000であり、前記高分子化合物(A)と前記化合物(B)とを触媒存在下反応させて得られる樹脂の重量平均分子量が3000〜200000である化学増幅型フォトレジスト用樹脂を提供する。
のいずれかで表されることを特徴とする前記記載の化学増幅型フォトレジスト用樹脂を提供する。
のいずれかで表されることを特徴とする前記記載の化学増幅型フォトレジスト用樹脂を提供する。
で表される繰り返し構造単位の双方を少なくとも有する、重量平均分子量が500〜10000の高分子化合物(A)と、下記一般式(III)
で表される化合物(B)とを、触媒存在下反応させて重量平均分子量が3000〜200000の化学増幅型フォトレジスト用樹脂を得ることを特徴とする化学増幅型フォトレジスト用樹脂の製造方法を提供する。
下記式で示される高分子化合物の合成
下記式で示される高分子化合物の合成
下記式で示される高分子化合物の合成
下記式で示される高分子化合物の合成
下記式で示される高分子化合物の合成
下記式で示される高分子化合物の合成
合成例1で得られた樹脂1.4gを14gのテトラヒドロフラン(THF)に均一に溶解した。0.01gのp−トルエンスルホン酸を均一に分散させた後に、0.4gの1,4−シクロヘキサンジメタノールジビニルエーテルを加えて室温で2時間撹拌を行なった。反応液を140gのヘプタンに再沈殿させた。減圧濾過により湿ポリマーを回収し、45℃で10時間減圧乾燥した。得られたポリマーの分子量はMw=34200、Mw/Mn=7.1であった。また、滴定法により得られたポリマー中のメタクリル酸の割合は7.4wt%であった。
合成例1で得られた樹脂1.4gを14gのTHFに均一に溶解した。0.01gのp−トルエンスルホン酸を均一に分散させた後に、0.4gの1,4−ブタンジオールジメタノールジビニルエーテルを加えて室温で2時間撹拌を行なった。反応液を140gのヘプタンに再沈殿させた。減圧濾過により湿ポリマーを回収し、45℃で10時間減圧乾燥した。得られたポリマーの分子量はMw=19200、Mw/Mn=5.6であった。また、滴定法により得られたポリマー中のメタクリル酸の割合は1.8wt%であった。
合成例2で得られた樹脂1.4gを14gのTHFに均一に溶解した。0.01gのp−トルエンスルホン酸を均一に分散させた後に、0.4gの1,4−シクロヘキサンジメタノールジビニルエーテルを加えて室温で2時間撹拌を行なった。反応液を140gのヘプタンに再沈殿させた。減圧濾過により湿ポリマーを回収し、45℃で10時間減圧乾燥した。得られたポリマーの分子量はMw=23300、Mw/Mn=5.4であった。また、滴定法により得られたポリマー中のメタクリル酸の割合は1.6wt%であった。
合成例3で得られた樹脂1.4gを14gのTHFに均一に溶解した。0.01gのp−トルエンスルホン酸を均一に分散させた後に、0.4gの1,4−シクロヘキサンジメタノールジビニルエーテルを加えて室温で2時間撹拌を行なった。反応液を140gのヘプタンに再沈殿させた。減圧濾過により湿ポリマーを回収し、45℃で10時間減圧乾燥した。得られたポリマーの分子量はMw=22200、Mw/Mn=4.5であった。また、滴定法により得られたポリマー中のメタクリル酸の割合は2.3wt%であった。
合成例4で得られた樹脂1.4gを14gのTHFに均一に溶解した。0.01gのp−トルエンスルホン酸を均一に分散させた後に、0.4gの1,4−シクロヘキサンジメタノールジビニルエーテルを加えて室温で2時間撹拌を行なった。反応液を140gのヘプタンに再沈殿させた。減圧濾過により湿ポリマーを回収し、45℃で10時間減圧乾燥した。得られたポリマーの分子量はMw=13700、Mw/Mn=3.0であった。また、滴定法により得られたポリマー中のメタクリル酸の割合は1.5wt%であった。
比較合成例1で得られた樹脂1.4gを14gのTHFに均一に溶解した。0.01gのp−トルエンスルホン酸を均一に分散させた後に、0.4gの1,4−シクロヘキサンジメタノールジビニルエーテルを加えて室温で2時間撹拌を行なった。反応液を140gのヘプタンに再沈殿させた。減圧濾過により湿ポリマーを回収し、45℃で10時間減圧乾燥した。得られたポリマーの分子量はMw=10600、Mw/Mn=2.6であった。また、滴定法により得られたポリマー中のメタクリル酸の割合は0.2wt%であった。
比較合成例2で得られた樹脂1.4gを14gのTHFに均一に溶解した。0.01gのp−トルエンスルホン酸を均一に分散させた後に、0.4gの1,4−シクロヘキサンジメタノールジビニルエーテルを加えて室温で2時間撹拌を行なった。反応液を140gのヘプタンに再沈殿させた。減圧濾過により湿ポリマーを回収し、45℃で10時間減圧乾燥した。得られたポリマーの分子量はMw=13500、Mw/Mn=2.9であった。また、滴定法により得られたポリマー中のメタクリル酸の割合は0.5wt%であった。
(ポジ型レジスト組成物組成物の調製と評価)
実施例で合成した樹脂をそれぞれ0.2g、光酸発生剤トリフェニルスルホニウム=トリフルオロメタンスルホナート 0.006g、有機塩基性化合物(2,2′,2′′−ニトリロトリエタノール)0.00006gを配合し、固形分が10重量%となるようにプロピレングリコールモノメチルエーテルアセテート/プロピレングリコールモノメチルエーテル=6/4(重量比)に溶解した後、0.1μmのミクロフィルターで濾過し、ポジ型レジスト組成物を調製した。
4インチシリコンウエハー上に得られたポジ型フォトレジスト組成物溶液をスピンコータを利用して塗布し、100℃で60秒間乾燥、約0.05μmのポジ型フォトレジスト膜を作成し、それにArFエキシマレーザー(193nm)で露光量を変えながら露光した。露光後の加熱処理を100℃で60秒間行い、2.38%のテトラメチルアンモニウムヒドロキシド水溶液で現像、蒸留水でリンスし、露光パターンを得た。露光部のうちレジスト膜の途中まで現像された部分の表面を原子間力顕微鏡(AFM)で1000nmの直線上を走査して表面粗さを測定した。結果を表1に示す。
Claims (11)
- 下記一般式(I)及び(II)
で表される繰り返し構造単位の双方を少なくとも有する高分子化合物(A)と、下記一般式(III)
で表される化合物(B)とを触媒存在下反応させて得られる化学増幅型フォトレジスト用樹脂であり、前記高分子化合物(A)の重量平均分子量が500〜10000であり、前記高分子化合物(A)と前記化合物(B)とを触媒存在下反応させて得られる樹脂の重量平均分子量が3000〜200000である化学増幅型フォトレジスト用樹脂。 - 前記記載の化学増幅型フォトレジスト用樹脂であって、前記一般式(I)及び(II)で表される繰り返し構造単位に含まれる水酸基及び/またはカルボキシル基の一部が未反応として残っていることを特徴とする請求項1記載の化学増幅型フォトレジスト用樹脂。
- 前記式(I)において、R3、R4が単結合、水素原子又は炭素数1〜20の直鎖もしくは分岐鎖状の脂肪族炭化水素基であることを特徴とする請求項1記載の化学増幅型フォトレジスト用樹脂。
- 前記高分子化合物(A)が更に酸により脱離してアルカリ可溶となる基を含む繰り返し構造単位を有することを特徴とする請求項1記載の化学増幅型フォトレジスト用樹脂。
- 前記高分子化合物(A)が更にラクトン骨格を有する繰り返し構造単位を有することを特徴とする請求項1記載の化学増幅型フォトレジスト用樹脂。
- アルカリ可溶となる基を含む繰り返し構造単位に対応する単量体が下記式(4a)〜(4d)
のいずれかで表されることを特徴とする請求項4記載の化学増幅型フォトレジスト用樹脂。 - ラクトン骨格を有する繰り返し構造単位に対応する単量体が下記式(5a)〜(5e)
のいずれかで表されることを特徴とする請求項5記載の化学増幅型フォトレジスト用樹脂。 - 高分子化合物(A)中に芳香族炭化水素基を有しないことを特徴とする請求項1記載の化学増幅型フォトレジスト用樹脂。
- 活性光線又は放射線の照射により酸を発生する化合物、及び請求項1〜8のいずれかに記載の化学増幅型フォトレジスト用樹脂を含有することを特徴とするポジ型フォトレジスト組成物。
- 露光光源として、220nm以下の波長の遠紫外光を使用することを特徴とする請求項9記載のポジ型フォトレジスト組成物。
- 下記一般式(I)及び(II)
で表される繰り返し構造単位の双方を少なくとも有する、重量平均分子量が500〜10000の高分子化合物(A)と、下記一般式(III)
で表される化合物(B)とを、触媒存在下反応させて重量平均分子量が3000〜200000の化学増幅型フォトレジスト用樹脂を得ることを特徴とする化学増幅型フォトレジスト用樹脂の製造方法。
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Publication number | Priority date | Publication date | Assignee | Title |
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JPH06148889A (ja) * | 1992-11-13 | 1994-05-27 | Fuji Photo Film Co Ltd | ポジ型感光性組成物 |
JPH10265524A (ja) * | 1997-01-24 | 1998-10-06 | Shin Etsu Chem Co Ltd | 高分子化合物及び化学増幅ポジ型レジスト材料 |
WO1999015935A1 (fr) * | 1997-09-22 | 1999-04-01 | Clariant International Ltd. | Nouveau procede de preparation de vernis a couvrir |
JP2006003844A (ja) * | 2004-06-21 | 2006-01-05 | Tokyo Ohka Kogyo Co Ltd | ポジ型レジスト組成物およびレジストパターン形成方法 |
WO2007086249A1 (ja) * | 2006-01-25 | 2007-08-02 | Nissan Chemical Industries, Ltd. | ポジ型感光性樹脂組成物及びそれから得られる硬化膜 |
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JP3731777B2 (ja) * | 1997-05-12 | 2006-01-05 | 富士写真フイルム株式会社 | ポジ型レジスト組成物 |
JP3856270B2 (ja) * | 1998-09-24 | 2006-12-13 | 富士フイルムホールディングス株式会社 | ポジ型レジスト組成物 |
JP3921009B2 (ja) * | 1998-10-15 | 2007-05-30 | 三井化学株式会社 | ポジ型紫外感光性樹脂組成物及びそれを用いたレジストパターン形成方法 |
JP3903638B2 (ja) * | 1999-04-12 | 2007-04-11 | 株式会社日立製作所 | パタン形成方法 |
JP2001033965A (ja) * | 1999-05-20 | 2001-02-09 | Kansai Paint Co Ltd | ポジ型感活性エネルギー線性ドライフィルム及びパターン形成方法 |
KR100813458B1 (ko) * | 2003-05-20 | 2008-03-13 | 도오꾜오까고오교 가부시끼가이샤 | 화학증폭형 포지티브형 포토레지스트 조성물 및 레지스트패턴형성방법 |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH06148889A (ja) * | 1992-11-13 | 1994-05-27 | Fuji Photo Film Co Ltd | ポジ型感光性組成物 |
JPH10265524A (ja) * | 1997-01-24 | 1998-10-06 | Shin Etsu Chem Co Ltd | 高分子化合物及び化学増幅ポジ型レジスト材料 |
WO1999015935A1 (fr) * | 1997-09-22 | 1999-04-01 | Clariant International Ltd. | Nouveau procede de preparation de vernis a couvrir |
JP2006003844A (ja) * | 2004-06-21 | 2006-01-05 | Tokyo Ohka Kogyo Co Ltd | ポジ型レジスト組成物およびレジストパターン形成方法 |
WO2007086249A1 (ja) * | 2006-01-25 | 2007-08-02 | Nissan Chemical Industries, Ltd. | ポジ型感光性樹脂組成物及びそれから得られる硬化膜 |
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