JP2012064916A - 太陽電池電極用ペーストおよびこれを利用した太陽電池 - Google Patents
太陽電池電極用ペーストおよびこれを利用した太陽電池 Download PDFInfo
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- 239000011521 glass Substances 0.000 claims abstract description 33
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 27
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 27
- 239000002105 nanoparticle Substances 0.000 claims abstract description 12
- 239000002003 electrode paste Substances 0.000 claims description 30
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 12
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- 239000011787 zinc oxide Substances 0.000 claims description 7
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- JCLDIQCCVGVPCA-UHFFFAOYSA-N [O-2].[Al+3].[Si+2]=O.[B+]=O.[Bi+]=O Chemical compound [O-2].[Al+3].[Si+2]=O.[B+]=O.[Bi+]=O JCLDIQCCVGVPCA-UHFFFAOYSA-N 0.000 description 1
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- NBAQDKHMGIHRAK-UHFFFAOYSA-N [O-2].[Al+3].[Si+2]=O.[B+]=O.[O-2].[Zn+2].[Bi+]=O Chemical compound [O-2].[Al+3].[Si+2]=O.[B+]=O.[O-2].[Zn+2].[Bi+]=O NBAQDKHMGIHRAK-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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
Abstract
【解決手段】本発明の太陽電池電極形成用ペーストは、(a)導電性粒子、(b)ガラスフリット、(c)有機ビヒクル、および(d)ナノサイズおよびマイクロサイズの粒子を含んで構成する金属酸化物粒子を含む。
【選択図】なし
Description
本発明で用いられる導電性粒子は、導電性を有する有機物粒子、無機物粒子またはこれらの組み合わせを使用できる。
前記ガラスフリットは、結晶化ガラスフリットまたは非結晶化ガラスフリットであって、有鉛ガラスフリット、無鉛ガラスフリットまたはこれらの混合物中のいずれも使用できる。前記ガラスフリットは、焼成工程中に導電性粒子と下部基材間の接着力を向上させ、焼結時に軟化して焼成温度をより低くすることができる効果を誘導できる。
有機ビヒクルは、太陽電池電極用ペーストに液状特性を付与する有機バインダーを含むことができる。好ましくは有機バインダーおよび溶剤を含んでなる。
本発明で金属酸化物粒子は、電極の接触抵抗を改善し、結晶化を促進させる役割をする。
(a)導電性粒子:Dowaハイテック社製の平均粒径(D50)が2.0μmの球形のAG−4−8(Ag粒子)を用いた。
(b)ガラスフリット
(b1)平均粒径(D50)が1.0μmで、転移点が451℃の低融点有鉛ガラスフリット((株)パーティクロジー社製,PSL1004C)を用いた。
(b2)平均粒径(D50)が1.7μmで、転移点が371℃の低融点無鉛ガラスフリット(韓国、フェニックスPDE(株)製,CSF−6)を用いた。
(c)有機ビヒクル:エチルセルロース(米国、ダウケミカル社製,STD4)をα−テルピネオール(日本テルペン化学(株)製)に60℃で溶解させたものを用いた。
(d)金属酸化物粒子
(d1)平均粒径(D50)が1.2μmのZnO粒子(関東化学(株)製)を用いた。
(d2)平均粒径(D50)が30nmのZnO粒子(韓国、SB化学(株)製)を用いた。
前記各成分を下記表1に記載されている含量で投入し、分散剤BYK111(ドイツ、ビックケミー(BYK−chemie)社製)を0.3質量部、搖変剤BYK430(BYK−chemie社製)を0.3質量部、消泡剤BYK053(BYK−chemie社製)を0.1質量部投入して混合した後、3ロール混練機で混合分散させて太陽電池電極形成用ペーストを製造した。
ナノサイズを有する金属酸化物粒子を使用しないことを除いては、前記実施例1と同様に行った。
マイクロサイズを有する金属酸化物粒子を使用しないことを除いては、前記実施例1と同様に行った。
Claims (10)
- (a)導電性粒子、(b)ガラスフリット、(c)有機ビヒクル、および(d)金属酸化物粒子を含む太陽電池電極用ペーストにおいて、前記金属酸化物粒子が平均粒径(D50)15〜50nmのナノサイズと平均粒径(D50)0.1〜2μm のマイクロサイズの粒径分布を有する太陽電池電極用ペースト。
- 前記金属酸化物粒子が、酸化亜鉛、酸化鉛、酸化銅(CuO)、酸化ケイ素および酸化チタンからなる群から1種以上の粒子を含む請求項1に記載の太陽電池電極用ペースト。
- 前記ナノサイズ粒子が、金属酸化物粒子中5〜50質量%で含まれる請求項1〜2のいずれか1項に記載の太陽電池電極用ペースト。
- 前記導電性粒子が、銀、金、パラジウム、白金、銅、クロム、コバルト、アルミニウム、スズ、鉛、亜鉛、鉄、イリジウム、オスミウム、ロジウム、タングステン、モリブデン、ニッケルおよびITO(酸化インジウムスズ)からなる群から選ばれる1以上を含む請求項1〜3のいずれか1項に記載の太陽電池電極用ペースト。
- 前記ガラスフリットが、有鉛ガラスフリット、無鉛ガラスフリットまたはこれらの混合物を含む請求項1〜4のいずれか1項に記載の太陽電池電極用ペースト。
- 前記有機ビヒクルが、有機バインダーと溶媒を含む請求項1〜5のいずれか1項に記載の太陽電池電極用ペースト。
- (a)導電性粒子60〜90質量%、(b)ガラスフリット1〜10質量%、(c)有機ビヒクル8〜20質量%、および(d)ナノサイズおよびマイクロサイズの金属酸化物粒子1〜10質量%を合せて100質量%以下となるように含む請求項1〜6のいずれか1項に記載の太陽電池電極用ペースト。
- 可塑剤、分散剤、搖変剤、粘度安定化剤、消泡剤、顔料、紫外線安定剤、酸化防止剤およびカップリング剤からなる群から選ばれた添加剤の1種以上をさらに含む請求項1〜7のいずれか1項に記載の太陽電池電極用ペースト。
- 請求項1〜8のいずれか1項に記載の太陽電池電極用ペーストから形成された太陽電池電極。
- 請求項9に記載の太陽電池電極を含んで構成する太陽電池。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20100090672 | 2010-09-15 | ||
KR10-2010-0090672 | 2010-09-15 |
Publications (2)
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JP2012064916A true JP2012064916A (ja) | 2012-03-29 |
JP5568001B2 JP5568001B2 (ja) | 2014-08-06 |
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KR20120028789A (ko) | 2012-03-23 |
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