JP6709943B2 - 導電性ペースト - Google Patents
導電性ペースト Download PDFInfo
- Publication number
- JP6709943B2 JP6709943B2 JP2017238568A JP2017238568A JP6709943B2 JP 6709943 B2 JP6709943 B2 JP 6709943B2 JP 2017238568 A JP2017238568 A JP 2017238568A JP 2017238568 A JP2017238568 A JP 2017238568A JP 6709943 B2 JP6709943 B2 JP 6709943B2
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- Prior art keywords
- conductive paste
- conductive
- present
- electrode
- resin
- Prior art date
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- 239000004332 silver Substances 0.000 claims description 30
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
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- 238000010304 firing Methods 0.000 description 4
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- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 2
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- 239000012535 impurity Substances 0.000 description 2
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- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 description 2
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- KDYFGRWQOYBRFD-UHFFFAOYSA-N succinic acid Chemical compound OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 2
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- JGTNAGYHADQMCM-UHFFFAOYSA-M 1,1,2,2,3,3,4,4,4-nonafluorobutane-1-sulfonate Chemical compound [O-]S(=O)(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F JGTNAGYHADQMCM-UHFFFAOYSA-M 0.000 description 1
- VZXTWGWHSMCWGA-UHFFFAOYSA-N 1,3,5-triazine-2,4-diamine Chemical compound NC1=NC=NC(N)=N1 VZXTWGWHSMCWGA-UHFFFAOYSA-N 0.000 description 1
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 1
- ARXJGSRGQADJSQ-UHFFFAOYSA-N 1-methoxypropan-2-ol Chemical compound COCC(C)O ARXJGSRGQADJSQ-UHFFFAOYSA-N 0.000 description 1
- OAYXUHPQHDHDDZ-UHFFFAOYSA-N 2-(2-butoxyethoxy)ethanol Chemical compound CCCCOCCOCCO OAYXUHPQHDHDDZ-UHFFFAOYSA-N 0.000 description 1
- SBASXUCJHJRPEV-UHFFFAOYSA-N 2-(2-methoxyethoxy)ethanol Chemical compound COCCOCCO SBASXUCJHJRPEV-UHFFFAOYSA-N 0.000 description 1
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- ZSAICLUIVSNXGW-UHFFFAOYSA-N 2-[[4-[4-(oxiran-2-ylmethyl)phenyl]phenyl]methyl]oxirane Chemical group C=1C=C(C=2C=CC(CC3OC3)=CC=2)C=CC=1CC1CO1 ZSAICLUIVSNXGW-UHFFFAOYSA-N 0.000 description 1
- LJBWJFWNFUKAGS-UHFFFAOYSA-N 2-[bis(2-hydroxyphenyl)methyl]phenol Chemical compound OC1=CC=CC=C1C(C=1C(=CC=CC=1)O)C1=CC=CC=C1O LJBWJFWNFUKAGS-UHFFFAOYSA-N 0.000 description 1
- QIRNGVVZBINFMX-UHFFFAOYSA-N 2-allylphenol Chemical compound OC1=CC=CC=C1CC=C QIRNGVVZBINFMX-UHFFFAOYSA-N 0.000 description 1
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 1
- XLLXMBCBJGATSP-UHFFFAOYSA-N 2-phenylethenol Chemical compound OC=CC1=CC=CC=C1 XLLXMBCBJGATSP-UHFFFAOYSA-N 0.000 description 1
- VEORPZCZECFIRK-UHFFFAOYSA-N 3,3',5,5'-tetrabromobisphenol A Chemical compound C=1C(Br)=C(O)C(Br)=CC=1C(C)(C)C1=CC(Br)=C(O)C(Br)=C1 VEORPZCZECFIRK-UHFFFAOYSA-N 0.000 description 1
- CXXSQMDHHYTRKY-UHFFFAOYSA-N 4-amino-2,3,5-tris(oxiran-2-ylmethyl)phenol Chemical compound C1=C(O)C(CC2OC2)=C(CC2OC2)C(N)=C1CC1CO1 CXXSQMDHHYTRKY-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 229910001316 Ag alloy Inorganic materials 0.000 description 1
- LCFVJGUPQDGYKZ-UHFFFAOYSA-N Bisphenol A diglycidyl ether Chemical compound C=1C=C(OCC2OC2)C=CC=1C(C)(C)C(C=C1)=CC=C1OCC1CO1 LCFVJGUPQDGYKZ-UHFFFAOYSA-N 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 1
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical class CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000007983 Tris buffer Substances 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- XZAHJRZBUWYCBM-UHFFFAOYSA-N [1-(aminomethyl)cyclohexyl]methanamine Chemical compound NCC1(CN)CCCCC1 XZAHJRZBUWYCBM-UHFFFAOYSA-N 0.000 description 1
- MFIBZDZRPYQXOM-UHFFFAOYSA-N [dimethyl-[3-(oxiran-2-ylmethoxy)propyl]silyl]oxy-dimethyl-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound C1OC1COCCC[Si](C)(C)O[Si](C)(C)CCCOCC1CO1 MFIBZDZRPYQXOM-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- WNLRTRBMVRJNCN-UHFFFAOYSA-L adipate(2-) Chemical compound [O-]C(=O)CCCCC([O-])=O WNLRTRBMVRJNCN-UHFFFAOYSA-L 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000004305 biphenyl Substances 0.000 description 1
- 235000010290 biphenyl Nutrition 0.000 description 1
- IPHKNOWSJUHYSE-UHFFFAOYSA-N bis(oxiran-2-ylmethyl) 3-methylcyclohexane-1,2-dicarboxylate Chemical compound CC1CCCC(C(=O)OCC2OC2)C1C(=O)OCC1CO1 IPHKNOWSJUHYSE-UHFFFAOYSA-N 0.000 description 1
- XFUOBHWPTSIEOV-UHFFFAOYSA-N bis(oxiran-2-ylmethyl) cyclohexane-1,2-dicarboxylate Chemical compound C1CCCC(C(=O)OCC2OC2)C1C(=O)OCC1CO1 XFUOBHWPTSIEOV-UHFFFAOYSA-N 0.000 description 1
- HGXHJQLDZPXEOG-UHFFFAOYSA-N bis(oxiran-2-ylmethyl) cyclohexane-1,4-dicarboxylate Chemical compound C1CC(C(=O)OCC2OC2)CCC1C(=O)OCC1CO1 HGXHJQLDZPXEOG-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000012461 cellulose resin Substances 0.000 description 1
- 229920001577 copolymer Polymers 0.000 description 1
- 239000011353 cycloaliphatic epoxy resin Substances 0.000 description 1
- HGCIXCUEYOPUTN-UHFFFAOYSA-N cyclohexene Chemical compound C1CCC=CC1 HGCIXCUEYOPUTN-UHFFFAOYSA-N 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 150000001991 dicarboxylic acids Chemical class 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 229940028356 diethylene glycol monobutyl ether Drugs 0.000 description 1
- XXJWXESWEXIICW-UHFFFAOYSA-N diethylene glycol monoethyl ether Chemical compound CCOCCOCCO XXJWXESWEXIICW-UHFFFAOYSA-N 0.000 description 1
- 229940075557 diethylene glycol monoethyl ether Drugs 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
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- 150000002148 esters Chemical class 0.000 description 1
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- 150000002170 ethers Chemical class 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
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- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
- WJRBRSLFGCUECM-UHFFFAOYSA-N hydantoin Chemical compound O=C1CNC(=O)N1 WJRBRSLFGCUECM-UHFFFAOYSA-N 0.000 description 1
- 229940091173 hydantoin Drugs 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000001023 inorganic pigment Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 150000003951 lactams Chemical class 0.000 description 1
- AUHZEENZYGFFBQ-UHFFFAOYSA-N mesitylene Substances CC1=CC(C)=CC(C)=C1 AUHZEENZYGFFBQ-UHFFFAOYSA-N 0.000 description 1
- 125000001827 mesitylenyl group Chemical group [H]C1=C(C(*)=C(C([H])=C1C([H])([H])[H])C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000113 methacrylic resin Substances 0.000 description 1
- 150000004702 methyl esters Chemical class 0.000 description 1
- JESXATFQYMPTNL-UHFFFAOYSA-N mono-hydroxyphenyl-ethylene Natural products OC1=CC=CC=C1C=C JESXATFQYMPTNL-UHFFFAOYSA-N 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- JAYXSROKFZAHRQ-UHFFFAOYSA-N n,n-bis(oxiran-2-ylmethyl)aniline Chemical compound C1OC1CN(C=1C=CC=CC=1)CC1CO1 JAYXSROKFZAHRQ-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000012860 organic pigment Substances 0.000 description 1
- AHHWIHXENZJRFG-UHFFFAOYSA-N oxetane Chemical compound C1COC1 AHHWIHXENZJRFG-UHFFFAOYSA-N 0.000 description 1
- 125000003566 oxetanyl group Chemical group 0.000 description 1
- AFEQENGXSMURHA-UHFFFAOYSA-N oxiran-2-ylmethanamine Chemical compound NCC1CO1 AFEQENGXSMURHA-UHFFFAOYSA-N 0.000 description 1
- JCGNDDUYTRNOFT-UHFFFAOYSA-N oxolane-2,4-dione Chemical compound O=C1COC(=O)C1 JCGNDDUYTRNOFT-UHFFFAOYSA-N 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 229920003192 poly(bis maleimide) Polymers 0.000 description 1
- 229920002037 poly(vinyl butyral) polymer Polymers 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
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- 239000009719 polyimide resin Substances 0.000 description 1
- 229920000734 polysilsesquioxane polymer Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- HNJBEVLQSNELDL-UHFFFAOYSA-N pyrrolidin-2-one Chemical compound O=C1CCCN1 HNJBEVLQSNELDL-UHFFFAOYSA-N 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical group 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
- 238000005477 sputtering target Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- 239000013008 thixotropic agent Substances 0.000 description 1
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 1
- 150000004992 toluidines Chemical class 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- ITMCEJHCFYSIIV-UHFFFAOYSA-M triflate Chemical compound [O-]S(=O)(=O)C(F)(F)F ITMCEJHCFYSIIV-UHFFFAOYSA-M 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/20—Compounding polymers with additives, e.g. colouring
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/52—Electrically conductive inks
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/68—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used
- C08G59/686—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used containing nitrogen
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Description
本発明の構成1は、(A)導電性成分、(B)熱硬化性樹脂、(C)式(1)の構造の化合物及び(D)溶剤を含む、導電性ペーストである。
式(1)
本発明の構成2は、(A)導電性成分が、Ag及びCuから選択される少なくとも1種である、構成1の導電性ペーストである。
本発明の構成3は、(A)導電性成分が、球状及び/又はフレーク状の粒子である、構成1又は2の導電性ペーストである。
本発明の構成4は、(B)熱硬化性樹脂が、エポキシ樹脂又はアクリル樹脂を含む、構成1から3のいずれかの導電性ペーストである。
本発明の構成5は、(C)式(1)の構造の化合物を、(A)導電性成分100重量部に対して0.1重量部〜2.0重量部含む、構成1から4のいずれかの導電性ペーストである。
本発明の構成6は、(D)溶剤が、エチルグリコールモノフェニルエーテル又はブチルカルビトールアセテートを含む、構成1から5のいずれかの導電性ペーストである。
本発明の構成7は、(E)フェノキシ樹脂をさらに含む、構成1から6のいずれかの導電性ペーストである。
本発明の構成8は、(F)カップリング剤をさらに含む、構成1から7のいずれかの導電性ペーストである。
本発明の構成9は、構成1から8のいずれかの導電性ペーストを用いた太陽電池電極形成用の導電性ペーストである。
本発明の構成10は、電極形成時の処理温度が250℃以下である構成9の太陽電池電極形成用の導電性ペーストである。
本発明の構成11は、透明電極の表面に電極を形成するための、構成1から8のいずれかの導電性ペーストである。
式(1)
本発明の導電性ペーストは、(A)導電性成分を含む。
本発明の導電性ペーストは、(B)熱硬化性樹脂を含む。
本発明の導電性ペーストは、(C)式(1)の構造の化合物を含む。
本発明の導電性ペーストは、(D)溶剤を含む。(D)溶剤の添加により、導電性ペーストの粘度を調整することができる。
本発明の導電性ペーストは、上述の(A)、(B)、(C)及び(D)成分以外に、下記の成分を含むことができる。
導電性ペーストの原料として、表4に示す材料を準備した。表1〜3に、実施例1〜17及び比較例1〜4の材料の配合を示す。表1〜3に示される配合割合は、導電性成分100重量部に対する重量部である。
導電性成分として、表4に示す銀粒子A及びBの2種類を、表1〜3に示す配合で用いた。
銀粒子A:粒子形状はフレーク状で、平均粒子径は3μmである。
銀粒子B:粒子形状は球状で、平均粒子径は1μmである。
熱硬化性樹脂として、表4に示すエポキシ樹脂A、B及びCの3種類を、表1〜3に示す配合で用いた。
エポキシ樹脂A:脂環式エポキシ樹脂
エポキシ樹脂B:ビスAエポキシ樹脂
エポキシ樹脂C:多官能エポキシ樹脂
カチオン重合開始剤として、表4に示すカチオン重合開始剤A〜Dの5種類を、表1〜3の配合で用いた。
カチオン重合開始剤A:式(1)の構造の化合物であり、表4に重合開始剤Aとして示すカチオン重合開始剤。
カチオン重合開始剤B:式(1)以外の構造の化合物であり、表4に重合開始剤Bとして示すカチオン重合開始剤。
カチオン重合開始剤C:式(1)以外の構造の化合物であり、表4に重合開始剤Cとして示すカチオン重合開始剤。
カチオン重合開始剤D:式(1)以外の構造の化合物であり、表4に重合開始剤Dとして示すカチオン重合開始剤。
カチオン重合開始剤E:式(1)以外の構造の化合物であり、表4に重合開始剤Eとして示すカチオン重合開始剤。
溶剤として、表4に示す溶剤A及びBの2種類を、表1〜3に示す配合で用いた。
表4に示すフェノキシ樹脂を、表1〜3に示す配合で用いた。
表4に示すカップリング剤を、表1〜3に示す配合で用いた。
実施例1〜17及び比較例1〜4の導電性ペーストを加熱して得られた導電膜の比抵抗(電気抵抗率)を測定した。
実施例1〜17及び比較例1〜4の導電性ペーストを用いて、透明導電膜を有する結晶系シリコン基板の表面に電極を形成し、接触抵抗を測定した。具体的には、実施例1〜17及び比較例1〜4の導電性ペーストを用いた接触抵抗測定用パターンを、結晶系シリコン基板の表面に形成された透明導電膜の上にスクリーン印刷し、加熱することにより、接触抵抗測定用電極を得た。
上述の接触抵抗測定用パターンの形状を測定することにより、印刷特性の評価を行った。接触抵抗測定用パターンの形状の測定は、レーザーテック社製コンフォーカル顕微鏡OPTELICS H1200及び表面粗さ形状測定機1500SD2を用いて行った。表1〜3に記号「○」として示すように、実施例1〜17及び比較例1〜4の導電性ペーストの透明導電膜(ITO薄膜)の表面への印刷特性は良好だった。
上述の比抵抗の測定によって得られた導電膜のうち、実施例3及び比較例1の導電膜の断面状態を、電子顕微鏡を用いて観察した。図4に示す実施例3の断面状態では、銀粒子の融着が進んでいることが見て取れる。これに対して、図5に示す比較例1の断面状態では、実施例3と比べて、銀粒子の融着が進んでいないことが見て取れる。本発明の導電性ペーストの場合、所定のカチオン重合開始剤を用いることにより、銀粒子の融着が進むため、低い比抵抗を得ることができるものと推測できる。ただし、本発明は、この推測に拘束されるものではない。
12 i型アモルファスシリコン層
14a p型アモルファスシリコン層
14b n型アモルファスシリコン層
16 透明導電膜
18a 光入射側電極
18b 裏面電極
Claims (11)
- (A)導電性成分、(B)熱硬化性樹脂、(C)式(1)の構造の化合物及び(D)溶剤を含む、導電性ペースト。
式(1)
- (A)導電性成分が、銀及び銅から選択される少なくとも1種である、請求項1に記載の導電性ペースト。
- (A)導電性成分が、球状及び/又はフレーク状の粒子である、請求項1又は2に記載の導電性ペースト。
- (B)熱硬化性樹脂が、エポキシ樹脂又はアクリル樹脂を含む、請求項1から3のいずれか1項に記載の導電性ペースト。
- (C)式(1)の構造の化合物を、(A)導電性成分100重量部に対して0.1重量部〜2.0重量部含む、請求項1から4のいずれか1項に記載の導電性ペースト。
- (D)溶剤が、エチルグリコールモノフェニルエーテル又はブチルカルビトールアセテートを含む、請求項1から5のいずれか1項に記載の導電性ペースト。
- (E)フェノキシ樹脂をさらに含む、請求項1から6のいずれか1項に記載の導電性ペースト。
- (F)カップリング剤をさらに含む、請求項1から7のいずれか1項に記載の導電性ペースト。
- 請求項1から8のいずれか1項に記載の導電性ペーストを用いた太陽電池電極形成用の導電性ペースト。
- 電極形成時の処理温度が250℃以下である請求項9に記載の太陽電池電極形成用の導電性ペースト。
- 透明電極の表面に電極を形成するための、請求項1から8のいずれか1項に記載の導電性ペースト。
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JP2017238568A JP6709943B2 (ja) | 2017-12-13 | 2017-12-13 | 導電性ペースト |
TW107139500A TWI783077B (zh) | 2017-12-13 | 2018-11-07 | 導電性膏 |
US16/768,842 US20210163772A1 (en) | 2017-12-13 | 2018-11-07 | Conductive paste |
PCT/JP2018/041303 WO2019116787A1 (ja) | 2017-12-13 | 2018-11-07 | 導電性ペースト |
EP18888515.6A EP3726538B1 (en) | 2017-12-13 | 2018-11-07 | Conductive paste |
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EP3726538A4 (en) | 2021-08-25 |
TW202018735A (zh) | 2020-05-16 |
EP3726538A1 (en) | 2020-10-21 |
US20210163772A1 (en) | 2021-06-03 |
JP2019106305A (ja) | 2019-06-27 |
EP3726538B1 (en) | 2023-12-27 |
CN111480206B (zh) | 2021-12-28 |
WO2019116787A1 (ja) | 2019-06-20 |
TWI783077B (zh) | 2022-11-11 |
EP3726538C0 (en) | 2023-12-27 |
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