ELECTRO-CONDUCTIVE PASTE COMPRISING METAL COMPOUND

PROBLEM TO BE SOLVED: To provide electro-conductive paste comprising a metal additive and a solar cell obtainable therefrom by application of the paste to a p-type doped face.SOLUTION: A precursor is provided that comprises the following paste constituents: a. A Si wafer with at least one p-type dop...

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Hauptverfasser: GERD SCHULZ, DANIEL ZINDEL, MARKUS KONIG, CHRISTIN BEHL, MATTHIAS HOERTEIS, NICOLE GEORG
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide electro-conductive paste comprising a metal additive and a solar cell obtainable therefrom by application of the paste to a p-type doped face.SOLUTION: A precursor is provided that comprises the following paste constituents: a. A Si wafer with at least one p-type doped face and at least one n-type doped face; b. An electro-conductive paste comprising the following paste constituents: i. at least about 70 wt. % Ag particles, based on the paste, ii. a vehicle, iii. a glass, iv. a metal compound comprising a metal M and which is one or more selected from the group consisting of: an organic metal oxide, a metal oxide, an organic metal compound and a silver metal oxide; wherein the electro-conductive paste b. is superimposed on a p-type doped face.SELECTED DRAWING: Figure 3b 【課題】金属添加剤を含む導電性ペーストと、p−型ドープ面へのペーストの塗布によってペーストから得ることができる太陽電池を提供する。【解決手段】次のペースト成分:a.少なくとも1つのp−型ドープ面と少なくとも1つのn−型ドープ面とを有するSiウエハ及びb.導電性ペーストであって、次のペースト成分:i.ペーストを基準として少なくとも約70重量%のAg粒子と、ii.ビヒクルと、iii.ガラスと、iv.金属Mを含み、有機金属酸化物、金属酸化物、有機金属化合物および銀金属酸化物から選択される1種以上の金属化合物とを含む導電性ペースト、を含み、前記導電性ペーストb.は、p−型ドープ面に重ねられる前駆材料。【選択図】図3b