Conductive compositions and processes for use in the manufacture of semiconductor devices: flux materials
View Patent ↗Described herein are a silicon semiconductor device and a conductive paste, including a flux material, for use in the front side of a solar cell device.
1. A conductive composition comprising:
a) electrically conductive silver;
b) one or more flux materials comprising 10-100 wt % Pb 2 SiO 4 ;
c) one or more zinc-containing additives;
and
d) organic vehicle;
wherein said electrically conductive silver, one or more zinc-containing additives and said one or more flux materials are dispersed in said organic vehicle.
2. The composition of claim 1 , wherein the composition comprises 0.5-13 wt % flux materials, based on the weight of the conductive composition.
3. The composition of claim 2 , wherein the composition comprises 1.5-5 wt % flux materials, based on the weight of the conductive composition.
4. The composition of claim 1 , said composition further comprising 0.5 to 4 wt % of one or more glass frits, wherein said wt % is based on the total weight of said composition.
5. The composition of claim 1 , said one or more flux materials comprising 50-99 wt % Pb 2 SiO 4 and further comprising one or more components selected from the group consisting of 4PbO—SiO 2 , 2PbO—SiO 2 , 5PbO—B 2 O 3 —SiO 2 , ZnPbO 3 , Zn 2 PbO 4 , CuPb 2 F 6 , CsPb(PO 3 ) 3 , 2PbO—B 2 O 3 , and 4PbO—B 2 O 3 .