Conductive paste used for solar cell electrodes and method of manufacturing the solar cell electrodes

摘要

A conductive paste used for a solar cell electrode comprising, (i) 60 wt % to 95 wt % of a conductive powder; (ii) 0.1 wt % to 5.0 wt % of a lead-tellurium-oxide powder, comprising 20 wt % to 60 wt % of PbO and 20 wt % to 60 wt % of TeO2 based on the total weight of the lead-tellurium-oxide powder; (iii) 3 wt % to 38 wt % of an organic medium; and (iv) 0.1 wt % to 1.5 wt % of an inorganic oxide powder selected from the group consisting of Ho2O3, La2O3, Sm2O3, Y2O3, Yb2O3, Gd2O3 and a mixture thereof, based on the total weight of the conductive paste.

主权项

1. A method of manufacturing a solar cell electrode comprising steps of:
preparing a semiconductor substrate comprising a front side and a back side; applying onto the front side of the semiconductor substrate a conductive paste comprising, (i) 60 wt % to 95 wt % of a conductive powder, based on the total weight of the conductive paste, (ii) 0.1 wt % to 5.0 wt % of a lead-tellurium-oxide powder, based on the total weight of the conductive paste, comprising 20 wt % to 60 wt % of PbO and 20 wt % to 60 wt % of TeO2, based on the total weight of the lead-tellurium-oxide powder, (iii) 3 wt % to 38 wt % of an organic medium, based on the total weight of the conductive paste, and (iv) 0.1 wt % to 1.5 wt % of an inorganic oxide powder selected from the group consisting of Ho2O3, La2O3, Sm2O3, Y2O3, Yb2O3, Gd2O3 and a mixture thereof, based on the total weight of the conductive paste; and firing the applied conductive paste to from an electrode.