Low metal content electroconductive paste composition

摘要

An electroconductive paste for use in solar cell technology comprising a first silver particle that is less than one micron in size and having a surface area of greater than 2.4 m 2 /g, as well as glass frit and an organic vehicle. Another embodiment of the invention relates to an electroconductive paste for use in solar cell technology further comprising a second silver particle that is greater than one micron in size and having a surface area of less than 2 m 2 /g. According to another embodiment, the total silver content of the paste is less than about 83.5 wt.%. Another embodiment of the invention relates to a solar cell comprising a silicon wafer having at having a surface electrode comprising the electroconductive pastes according to the invention. Another embodiment of the invention relates to a solar cell module comprising electrically interconnected solar cells according to the invention. Yet another embodiment of the invention relates to a method of producing a solar cell by applying an electroconductive paste according to the invention to a silicon wafer and firing the wafer at an appropriate profile.