JP6877750B2 - 導電性ペースト - Google Patents
導電性ペースト Download PDFInfo
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- JP6877750B2 JP6877750B2 JP2017234123A JP2017234123A JP6877750B2 JP 6877750 B2 JP6877750 B2 JP 6877750B2 JP 2017234123 A JP2017234123 A JP 2017234123A JP 2017234123 A JP2017234123 A JP 2017234123A JP 6877750 B2 JP6877750 B2 JP 6877750B2
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- conductive paste
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- present
- electrode
- epoxy resin
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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
- 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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/20—Electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/20—Conductive material dispersed in non-conductive organic material
- H01B1/22—Conductive material dispersed in non-conductive organic material the conductive material comprising metals or alloys
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- 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
- C08G59/40—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 curing agents used
- C08G59/50—Amines
- C08G59/5046—Amines heterocyclic
- C08G59/5053—Amines heterocyclic containing only nitrogen as a heteroatom
- C08G59/5073—Amines heterocyclic containing only nitrogen as a heteroatom having two nitrogen atoms in the ring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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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
- 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
- C09D11/02—Printing inks
- C09D11/03—Printing inks characterised by features other than the chemical nature of the binder
- C09D11/033—Printing inks characterised by features other than the chemical nature of the binder characterised by the solvent
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Description
本発明の構成1は、(A)導電性成分、(B)エポキシ樹脂、(C)イミダゾール及び(D)溶剤を含み、(D)溶剤を除いた導電性ペーストを100重量%として、導電性ペースト中の(C)イミダゾールが0.1〜1.0重量%である、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3は、(B)エポキシ樹脂が、ビスフェノールF型エポキシ樹脂、ビフェニル型エポキシ樹脂及びビスフェノールA型エポキシ樹脂から選択される少なくとも1つを含む、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、(D)溶剤が、エチレン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、(E)フェノール樹脂をさらに含む、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、(F)カップリング剤をさらに含む、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)エポキシ樹脂を含む。
本発明の導電性ペーストは、(C)イミダゾールを含む。
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。
本発明の導電性ペーストの製造方法は、特に限定されない。本発明の導電性ペーストは、各成分を、所定の配合で、ライカイ機、プロペラ撹拌機、ニーダー、三本ロールミル、及びポットミル等の混合機に投入し、混合することにより、製造することができる。
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1〜6の材料の配合を示す。表1〜3に示される配合割合は、(D)溶剤を除いた導電性ペーストの重量を100重量部としたときの重量部である。すなわち、表1〜3に示される配合割合は、(A)導電性成分、(B)エポキシ樹脂、(C)イミダゾール、(E)フェノール樹脂及び(F)カップリング剤の合計重量を100重量部としたときの、各成分の重量部である。
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:多官能エポキシ樹脂(トリスフェノールメタンエポキシ樹脂)
エポキシ樹脂B:ビスフェノールF型エポキシ樹脂
エポキシ樹脂C:ビスフェノールA型エポキシ樹脂
イミダゾールとして、表4に示すイミダゾールA〜Cの3種類を、表1〜3の配合で用いた。イミダゾールA〜Cは、下記の化学式で示される。
イミダゾールA:下記式(1)のイミダゾール
式(1)
イミダゾールB:下記式(2)のイミダゾール
式(2)
イミダゾールC:下記式(3)のイミダゾール
式(3)
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1〜6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1〜6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1〜6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。
本発明の導電性ペーストの評価の一つとして、はんだ付け接着強度を測定した。はんだ付け接着強度測定用基板としては、上述の接触抵抗の測定の場合と同様に、透明導電膜を有する結晶系シリコン基板を用いた。この基板の表面に太陽電池電極に模した電極パターンを形成し、接触抵抗を測定した。
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1〜6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。
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 (5)
- (F)カップリング剤をさらに含む、請求項1に記載の導電性ペースト。
- (A)導電性成分の含有量が、導電性ペースト全体に対して75〜98重量%である、請求項1又は2に記載の導電性ペースト。
- (A)導電性成分、(B)エポキシ樹脂、(C)イミダゾール、(E)フェノール樹脂及び(F)カップリング剤の合計重量を100重量部としたときに、(E)フェノール樹脂の含有量が1.56〜1.76重量%である、請求項1〜3のいずれか1項に記載の導電性ペースト。
- アモルファスシリコン太陽電池、ヘテロ接合型太陽電池又は化合物半導体太陽電池の電極形成用の導電性ペーストである、請求項1〜4のいずれか1項に記載の導電性ペースト。
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JP2017234123A JP6877750B2 (ja) | 2017-12-06 | 2017-12-06 | 導電性ペースト |
CN201880075822.2A CN111448670B (zh) | 2017-12-06 | 2018-11-07 | 导电性糊剂 |
EP18886025.8A EP3723139B1 (en) | 2017-12-06 | 2018-11-07 | Electrically conductive paste |
KR1020207017584A KR102554447B1 (ko) | 2017-12-06 | 2018-11-07 | 도전성 페이스트 |
TW107139504A TWI783078B (zh) | 2017-12-06 | 2018-11-07 | 導電性膏 |
US16/768,749 US11466170B2 (en) | 2017-12-06 | 2018-11-07 | Conductive paste |
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CN112562885B (zh) * | 2020-12-29 | 2022-06-17 | 四川东树新材料有限公司 | 一种太阳能异质结电池用高焊接拉力主栅低温银浆及其制备方法 |
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EP3723139A1 (en) | 2020-10-14 |
KR102554447B1 (ko) | 2023-07-12 |
US11466170B2 (en) | 2022-10-11 |
TW201926363A (zh) | 2019-07-01 |
TWI783078B (zh) | 2022-11-11 |
EP3723139C0 (en) | 2023-06-14 |
EP3723139A4 (en) | 2021-08-18 |
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