Glass compositions used in conductors for photovoltaic cells
View Patent ↗An objective of this present invention is to provide a conductive paste that could obtain good electrical property, for example series resistance in an electrode. An aspect of the present invention relates to a conductive paste which comprises electrically conductive powder; glass frit which comprises, based on weight percent (wt %) of the glass frit, 8-26 wt % of SiO 2 , 0.1-5 wt % of Al 2 O 3 , and 73-90 wt % of lead compound, wherein lead fluoride is contained in the range of 5-28 wt % based on the total weight of the lead compound; and organic medium.
1. A method of manufacturing a solar cell electrode comprising steps of:
providing a semiconductor substrate;
applying a conductive paste onto the semiconductor substrate, wherein the conductive paste comprises, electrically conductive powder, glass frit which comprises, based on weight percent (wt %) of the glass frit:
8-26 wt % of SiO2,
0.1-5 wt % of Al2O3,
0.5-5.0 wt % of B 2 O 3 , and
73-90 wt % of lead compound, wherein the lead compound comprises 5-18 wt % of lead fluoride based on the total weight of the lead compound; and
organic medium; and
firing the conductive paste.
2. The method of manufacturing a solar cell electrode of claim 1 , wherein the conductive paste is fired at a temperature of less than 930° C.
3. The method of claim 1 , wherein the conductive paste is fired for 2-5 minutes.
4. A solar cell electrode manufactured by the method of claim 1 .
5. A solar cell comprising the solar cell electrode claim 4 .