Conductive adhesive film and solar cell module

摘要

The conductive adhesive film of the invention is a conductive adhesive film for electrical connection between photovoltaic cell surface electrodes and wiring members, which comprises an insulating adhesive 2 and conductive particles 1 and has a (t/r) value in the range of 0.75-17.5, where r (μm) is the mean particle size of the conductive particles 1 and t (μm) is the thickness of the conductive adhesive film, wherein the content of the conductive particles 1 is 1.7-15.6 vol % based on the total volume of the conductive adhesive film.

主权项

1. A solar cell module comprising a plurality of photovoltaic cells connected via a plurality of wiring members, wherein each photovoltaic cell comprises:
(a) a plurality of surface electrodes, wherein the plurality of surface electrodes are formed on a substrate comprising at least one material selected from the group consisting of single crystalline silicon and polycrystalline silicon; and (b) a conductive adhesive film with a thickness of t disposed to electrically connect each surface electrode to each wiring member of the plurality of the wiring members, wherein the conductive adhesive film comprises
(i) an insulating adhesive; and(ii) a plurality of conductive particles having a mean particle size r, wherein a ratio of t/r is in a range of 2.0-9.0 and a content of the conductive particles is 1.7-15.6 vol % based on a total volume of the conductive adhesive film, wherein the mean particle size r of the conductive particles is at least ten-point average surface roughness Rz of the surface electrodes.