JP5969253B2 - 表面処理剤及び表面処理方法 - Google Patents
表面処理剤及び表面処理方法 Download PDFInfo
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- JP5969253B2 JP5969253B2 JP2012086726A JP2012086726A JP5969253B2 JP 5969253 B2 JP5969253 B2 JP 5969253B2 JP 2012086726 A JP2012086726 A JP 2012086726A JP 2012086726 A JP2012086726 A JP 2012086726A JP 5969253 B2 JP5969253 B2 JP 5969253B2
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- 239000012756 surface treatment agent Substances 0.000 title claims description 44
- 238000000034 method Methods 0.000 title claims description 22
- 238000004381 surface treatment Methods 0.000 title claims description 18
- 239000000758 substrate Substances 0.000 claims description 101
- 150000001875 compounds Chemical class 0.000 claims description 43
- 239000003795 chemical substances by application Substances 0.000 claims description 30
- 125000004432 carbon atom Chemical group C* 0.000 claims description 20
- 125000002947 alkylene group Chemical group 0.000 claims description 16
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 14
- 230000002209 hydrophobic effect Effects 0.000 claims description 11
- 125000000217 alkyl group Chemical group 0.000 claims description 7
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims 1
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- 239000007788 liquid Substances 0.000 description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 14
- 239000003960 organic solvent Substances 0.000 description 14
- 238000011282 treatment Methods 0.000 description 14
- 239000000463 material Substances 0.000 description 13
- 238000001035 drying Methods 0.000 description 12
- 229910052710 silicon Inorganic materials 0.000 description 12
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- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
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- 239000012535 impurity Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 125000001972 isopentyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])C([H])([H])* 0.000 description 1
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- 125000002960 margaryl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- OJURWUUOVGOHJZ-UHFFFAOYSA-N methyl 2-[(2-acetyloxyphenyl)methyl-[2-[(2-acetyloxyphenyl)methyl-(2-methoxy-2-oxoethyl)amino]ethyl]amino]acetate Chemical compound C=1C=CC=C(OC(C)=O)C=1CN(CC(=O)OC)CCN(CC(=O)OC)CC1=CC=CC=C1OC(C)=O OJURWUUOVGOHJZ-UHFFFAOYSA-N 0.000 description 1
- BDJSOPWXYLFTNW-UHFFFAOYSA-N methyl 3-methoxypropanoate Chemical compound COCCC(=O)OC BDJSOPWXYLFTNW-UHFFFAOYSA-N 0.000 description 1
- CWKLZLBVOJRSOM-UHFFFAOYSA-N methyl pyruvate Chemical compound COC(=O)C(C)=O CWKLZLBVOJRSOM-UHFFFAOYSA-N 0.000 description 1
- GYNNXHKOJHMOHS-UHFFFAOYSA-N methyl-cycloheptane Natural products CC1CCCCCC1 GYNNXHKOJHMOHS-UHFFFAOYSA-N 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- AJFDBNQQDYLMJN-UHFFFAOYSA-N n,n-diethylacetamide Chemical compound CCN(CC)C(C)=O AJFDBNQQDYLMJN-UHFFFAOYSA-N 0.000 description 1
- QULMGWCCKILBTO-UHFFFAOYSA-N n-[dimethylamino(dimethyl)silyl]-n-methylmethanamine Chemical compound CN(C)[Si](C)(C)N(C)C QULMGWCCKILBTO-UHFFFAOYSA-N 0.000 description 1
- 229940094933 n-dodecane Drugs 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- UMRZSTCPUPJPOJ-KNVOCYPGSA-N norbornane Chemical compound C1C[C@H]2CC[C@@H]1C2 UMRZSTCPUPJPOJ-KNVOCYPGSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- CFJYNSNXFXLKNS-UHFFFAOYSA-N p-menthane Chemical compound CC(C)C1CCC(C)CC1 CFJYNSNXFXLKNS-UHFFFAOYSA-N 0.000 description 1
- 125000000913 palmityl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 125000002958 pentadecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229930006728 pinane Natural products 0.000 description 1
- LLHKCFNBLRBOGN-UHFFFAOYSA-N propylene glycol methyl ether acetate Chemical compound COCC(C)OC(C)=O LLHKCFNBLRBOGN-UHFFFAOYSA-N 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011342 resin composition Substances 0.000 description 1
- 239000012487 rinsing solution Substances 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000006884 silylation reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000004528 spin coating Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- HXJUTPCZVOIRIF-UHFFFAOYSA-N sulfolane Chemical compound O=S1(=O)CCCC1 HXJUTPCZVOIRIF-UHFFFAOYSA-N 0.000 description 1
- 150000003457 sulfones Chemical class 0.000 description 1
- 150000003462 sulfoxides Chemical class 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229930006978 terpinene Natural products 0.000 description 1
- 150000003507 terpinene derivatives Chemical class 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- YFNKIDBQEZZDLK-UHFFFAOYSA-N triglyme Chemical compound COCCOCCOCCOC YFNKIDBQEZZDLK-UHFFFAOYSA-N 0.000 description 1
- 125000003258 trimethylene group Chemical group [H]C([H])([*:2])C([H])([H])C([H])([H])[*:1] 0.000 description 1
- RSJKGSCJYJTIGS-UHFFFAOYSA-N undecane Chemical compound CCCCCCCCCCC RSJKGSCJYJTIGS-UHFFFAOYSA-N 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- 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
- G03F7/075—Silicon-containing compounds
- G03F7/0752—Silicon-containing compounds in non photosensitive layers or as additives, e.g. for dry lithography
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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
- G03F7/085—Photosensitive compositions characterised by adhesion-promoting non-macromolecular additives
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- 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
- G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
- G03F7/11—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having cover layers or intermediate layers, e.g. subbing layers
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
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- H01L21/02041—Cleaning
- H01L21/02057—Cleaning during device manufacture
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- 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
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- 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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- H01L21/02—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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/302—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to change their surface-physical characteristics or shape, e.g. etching, polishing, cutting
- H01L21/306—Chemical or electrical treatment, e.g. electrolytic etching
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- 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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- 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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
- H01L21/02112—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer
- H01L21/02123—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon
- H01L21/0217—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates characterised by the material of the layer the material containing silicon the material being a silicon nitride not containing oxygen, e.g. SixNy or SixByNz
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Description
R1 aSi[N(CH3)2]4−a・・・(1)
(式(1)において、R1は、それぞれ独立に、水素原子の一部又は全部がフッ素原子で置換されていてもよい、炭素数1〜18の直鎖又は分岐鎖脂肪族炭化水素基であり、aは1又は2である。)
R2 b[N(CH3)2]3−bSi−R4−SiR3 c[N(CH3)2]3−c・・・(2)
(式(2)において、R2及びR3はそれぞれ独立に、水素原子、又は炭素数1〜4の直鎖又は分岐鎖アルキル基であり、R4は炭素数1〜16の直鎖又は分岐鎖アルキレン基であり、b及びcはそれぞれ独立に0〜2の整数である。)
まず、本発明に係る表面処理剤について説明する。本発明に係る表面処理剤は、基板表面を疎水化する際に好適に使用される。ここで、「基板」としては、半導体デバイス製造のために使用される基板が挙げられる。また、「基板表面」としては、基板自体の表面のほか、基板上に設けられた無機パターンの表面、又はパターン化されていない無機層の表面等が挙げられる。
R1 aSi[N(CH3)2]4−a・・・(1)
(式(1)において、R1は、それぞれ独立に、水素原子の一部又は全部がフッ素原子で置換されていてもよい、炭素数1〜18の直鎖又は分岐鎖脂肪族炭化水素基であり、aは1又は2である。)
R2 b[N(CH3)2]3−bSi−R4−SiR3 c[N(CH3)2]3−c・・・(2)
(式(2)において、R2及びR3はそれぞれ独立に、水素原子、又は炭素数1〜4の直鎖又は分岐鎖アルキル基であり、R4は炭素数1〜16の直鎖又は分岐鎖アルキレン基であり、b及びcはそれぞれ独立に0〜2の整数である。)
本発明に係る表面処理剤は、シリル化剤として上記の式(1)又は(2)で表される化合物を含有する。この式(1)又は(2)で表される化合物は、基板表面をシリル化し、基板表面の疎水性を高めるための成分である。
式(1)で表される化合物は、R1として水素原子の一部又は全部がフッ素原子で置換されていてもよい、炭素数1〜18の直鎖又は分岐鎖脂肪族炭化水素基を含む。R1の炭素数は、2〜18が好ましく、8〜18がより好ましい。また、R1は、飽和炭化水素基でも、不飽和炭化水素基でもよい。R1が不飽和炭化水素基である場合、不飽和結合の位置及び数は特に限定されず、不飽和結合は二重結合であっても三重結合であってもよい。
式(2)で表される化合物は、R2及びR3として、水素原子、又は炭素数1〜4の直鎖又は分岐鎖アルキル基を含む。R2及びR3は、同一であってもよく異なっていてもよい。R2及びR3としては、水素原子、又は炭素数1〜3の直鎖又は分岐鎖アルキル基が好ましく、水素原子、又はメチル基がより好ましく、メチル基が特に好ましい。R2及びR3がこのような基である場合、基板と式(2)で表される化合物との間の立体障害が少ないため、式(2)で表される化合物を基板表面と良好に反応させやすい。
本発明に係る表面処理剤は、さらに有機溶剤を含有していてもよい。式(1)又は(2)で表される化合物を有機溶剤で希釈することにより、基板表面に対する塗布作業性、ハンドリング性、リンス液との置換性等を向上させることができる。
次に、本発明に係る表面処理方法について説明する。本発明に係る表面処理方法は、基板表面に本発明に係る表面処理剤を曝露させ、その基板の表面を処理するものである。
なお、乾燥処理は、例えば、特許第3866130号公報の段落[0030]以降に記載されているような方法でも構わない。
F=2γ・cosθ・A/D・・・(I)
表1〜4に記載のシリル化剤5質量%と、n−デカン95質量%とからなる表面処理剤を用いた。表1〜4に記載の表面材質の基板を濃度1質量%のフッ化水素水溶液で25℃、1分間洗浄した後、表面処理剤に室温で60秒間浸漬した。そして、基板表面をメチルエチルケトンでリンスし、窒素ブローにより乾燥させた。その後、Dropmaster700(協和界面科学株式会社製)を用い、基板表面に純水液滴(1.8μL)を滴下して、滴下10秒後における接触角を測定した。結果を表1〜4に示す。
参考例1として、フッ化水素酸による処理と、表面処理剤による処理とが施されていない基板について、実施例1と同様に接触角を測定した。また、参考例2として、フッ化水素酸による処理が施され、表面処理剤による処理が施されていない基板について、実施例1と同様に接触角を測定した。参考例1、及び参考例2で測定された各基板の接触角を表1に示す。
Claims (6)
- 基板表面の疎水化処理に使用され、下記式(2)で表される化合物を含む表面処理剤。
R2 b[N(CH3)2]3−bSi−R4−SiR3 c[N(CH3)2]3−c・・・(2)
(式(2)において、R2及びR3はそれぞれ独立に、水素原子、又は炭素数1〜4の直鎖又は分岐鎖アルキル基であり、R4は炭素数1〜16の直鎖又は分岐鎖アルキレン基であり、b及びcはそれぞれ独立に1又は2の整数である。) - b及びcが1である、請求項1記載の表面処理剤。
- R4が直鎖アルキレン基である、請求項1又は2記載の表面処理剤。
- R2及びR3が水素原子、又はメチル基である、請求項1〜3のいずれか1項記載の表面処理剤。
- さらに溶剤を含む、請求項1〜4のいずれか1項記載の表面処理剤。
- 基板表面に請求項1〜5のいずれか1項に記載の表面処理剤を暴露させ、前記基板表面を疎水化する表面処理方法。
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