JP2012094518A - 導電性ペーストおよび太陽電池 - Google Patents
導電性ペーストおよび太陽電池 Download PDFInfo
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- JP2012094518A JP2012094518A JP2011236427A JP2011236427A JP2012094518A JP 2012094518 A JP2012094518 A JP 2012094518A JP 2011236427 A JP2011236427 A JP 2011236427A JP 2011236427 A JP2011236427 A JP 2011236427A JP 2012094518 A JP2012094518 A JP 2012094518A
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- Prior art keywords
- conductive paste
- mixing
- electrode
- conductive
- heat
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- 239000005011 phenolic resin Substances 0.000 description 1
- RLOWWWKZYUNIDI-UHFFFAOYSA-N phosphinic chloride Chemical compound ClP=O RLOWWWKZYUNIDI-UHFFFAOYSA-N 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 229920003987 resole Polymers 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229940116411 terpineol Drugs 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
【解決手段】導電性粉末、導電性粉末との混合熱が0より小さい第1元素を含む金属ガラス、および有機ビヒクルを含む導電性ペーストと、この導電性ペーストを用いて形成されてなる太陽電池とに関する。
【選択図】図3
Description
[実施例1]
金属ガラスCu46Zr46Al8を、厚さが90μmで、幅が0.5cmのリボン状に用意する。前記金属ガラスリボンを長さを1cmに切断した後、その上に銀(Ag)が85質量%含まれている銀(Ag)ペーストを塗布した。次に、前記金属ガラスリボンを大気中で650℃で30分間の熱処理を行って、導電性薄膜を形成した。この時、昇温速度は50℃/分であった。
金属ガラスとしてCu46Zr46Al8の代わりにCu58.1Zr35.9Al6を使用したことを除いては、実施例1と同様な方法で金属ガラスリボンの上に導電性薄膜を形成した。
金属ガラスにとしてCu46Zr46Al8の代わりにCu50Zr50を使用したことを除いては、実施例1と同様な方法で金属ガラスリボンの上に導電性薄膜を形成した。
実施例1および2と比較例1によって形成された金属ガラスリボンおよび導電性薄膜を切断した後、その断面を分析した。
[実施例3]
銀(Ag)粉末および金属ガラスCu46Zr46Al8をエチルセルロースバインダーおよびブチルカルビトール溶媒を含む有機ビヒクルに添加した。この時、銀(Ag)粉末、金属ガラスCu46Zr46Al8および有機ビヒクルを、導電性ペーストの総含有量に対してそれぞれ約84質量%、約4質量%および約12質量%で混合し混合物を得た。
金属ガラスとしてCu46Zr46Al8の代わりにCu58.1Zr35.9Al6を使用したことを除いては、実施例3と同様の方法で導電性ペーストを製造し、当該導電性ペーストを用いた電極を形成した。
金属ガラスとしてCu46Zr46Al8の代わりにCu50Zr50を使用したことを除いては、実施例3と同様の方法で導電性ペーストを製造し、当該導電性ペーストを用いて電極を形成した。
実施例3および4と比較例2において形成された電極の接触抵抗値を測定した。接触抵抗値はTransfer length method(TLM)により測定した。
110a 下部半導体層
110b 上部半導体層
111a 第1ドーピング領域
111b 第2ドーピング領域
115 バッファー層、
115a 金属ガラス、
120 前面電極部、
120a 導電性ペースト、
121 第1電極部、
122a 導電性粉末、
122b、122c 結晶化された導電性粉末、
130、150 誘電膜、
135 貫通部、
140 後面電極部、
141 第2電極部。
Claims (16)
- 導電性粉末、
前記導電性粉末との混合熱が0より小さい第1元素を含む金属ガラス、および
有機ビヒクルを含む導電性ペースト。 - 前記導電性粉末と前記第1元素との共融温度が、前記導電性ペーストを用いて形成されてなる電極焼成温度より低いことを特徴とする、請求項1に記載の導電性ペースト。
- 前記導電性ペーストを用いて形成されてなる電極焼成温度が1000℃以下であることを特徴とする、請求項2に記載の導電性ペースト。
- 前記導電性ペーストを用いて形成されてなる電極焼成温度が200℃ないし1000℃であることを特徴とする、請求項3に記載の導電性ペースト。
- 前記第1元素が、ランタン(La)、セリウム(Ce)、プラセオジム(Pr)、プロメチウム(Pm)、サマリウム(Sm)、ルテチウム(Lu)、イットリウム(Y)、ネオジム(Nd)、ガドリニウム(Gd)、テルビウム(Tb)、ジスプロシウム(Dy)、ホルミウム(Ho)、エルビウム(Er)、ツリウム(Tm)、トリウム(Th)、カルシウム(Ca)、スカンジウム(Sc)、バリウム(Ba)、ベリリウム(Be)、ビスマス(Bi)、ゲルマニウム(Ge)、鉛(Pb)、イッテルビウム(Yb)、ストロンチウム(Sr)、ユーロピウム(Eu)、ジルコニウム(Zr)、タリウム(Tl)、リチウム(Li)、ハフニウム(Hf)、マグネシウム(Mg)、リン(P)、砒素(As)、パラジウム(Pd)、金(Au)、プルトニウム(Pu)、ガリウム(Ga)、アルミニウム(Al)、銅(Cu)、亜鉛(Zn)、アンチモン(Sb)、ケイ素(Si)、錫(Sn)、チタニウム(Ti)、カドミウム(Cd)、インジウム(In)、白金(Pt)、および水銀(Hg)からなる群より選択される少なくとも一つを含む、請求項1〜4のいずれか1項に記載の導電性ペースト。
- 前記金属ガラスが第2元素および第3元素をさらに含み、
前記金属ガラスが下記の化学式1の組成を有する合金である、請求項1〜5のいずれか1項に記載の導電性ペースト:
- 前記第1元素、第2元素および第3元素が、下記関係式1を満たす比率で含まれる、請求項6に記載の導電性ペースト:
- 前記金属ガラスが第2元素、第3元素および第4元素をさらに含み、
前記金属ガラスは下記の化学式2の組成を有する合金である、請求項1〜5のいずれか1項に記載の導電性ペースト:
- 前記第1元素、第2元素、第3元素および第4元素が、下記関係式2を満たす比率で含まれる、請求項8に記載の導電性ペースト:
- 前記導電性粉末の比抵抗が100μΩcm以下であることを特徴とする、請求項1〜9のいずれか1項に記載の導電性ペースト。
- 前記導電性粉末が、銀(Ag)、アルミニウム(Al)、銅(Cu)、ニッケル(Ni)またはこれらの組み合わせを含む、請求項1〜10のいずれか1項に記載の導電性ペースト。
- 前記導電性粉末、前記金属ガラス、および前記有機ビヒクルが、前記導電性ペーストの総量に対してそれぞれ30ないし99質量%、0.1ないし20質量%および0.9ないし69.9質量%で含まれることを特徴とする、請求項1〜11のいずれか1項に記載の導電性ペースト。
- 請求項1ないし12のいずれか1項に記載の導電性ペーストを用いて形成された電極を含む電子素子。
- 半導体層、および
請求項1ないし12のいずれか1項に記載の導電性ペーストを用いて形成され前記半導体層に電気的に接続された電極を含む太陽電池。 - 前記電極が、前記半導体層と隣接する領域に位置するバッファー層、および前記バッファー層以外の領域に位置する電極部を含むことを特徴とする、請求項14に記載の太陽電池。
- 前記バッファー層、前記半導体層と前記バッファー層の界面、および前記半導体層のうちの少なくとも一つは結晶化された導電性物質を含むことを特徴とする、請求項15に記載の太陽電池。
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CN118213104A (zh) * | 2024-01-16 | 2024-06-18 | 贺利氏光伏科技(上海)有限公司 | 导电浆料和由其制备的电极以及包含所述电极的晶体硅太阳能电池 |
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