Silicon solar cell electrode silver coated copper sizing agent and preparing method thereof
A silicon solar cell, silver-coated copper technology, applied in conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, circuits, etc., can solve the gap in high temperature oxidation resistance, narrow sintering temperature range, and high product cost problems, to achieve the effects of improving stability and reliability, expanding the sintering temperature range, and preventing oxidation of the inner core copper
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Embodiment 1
[0045] The glass powder raw material Bi 2 o 3 60g, SiO 2 10g, B 2 o 3 10g, ZnO10g, CeO 2 5g, MoO 3Mix 5g evenly and put it into a crucible, heat the crucible with raw materials in a muffle furnace to a temperature of 1200°C to melt and keep it warm for 2 hours; after the glass liquid is clear and uniform, pour the clear liquid directly into 2000mL deionized water for water quenching , to obtain coarse glass powder, ball mill the coarse glass powder, and pass through a 400-mesh sieve to obtain 100 g of 3-5 μm glass powder, and the softening temperature of the glass powder is 430-440° C.
[0046] Mix 50 g of butyl carbitol and 20 g of glyceryl acetate, heat to 95°C, add 20 g of dihydroxyethyl cocoamine and 10 g of ethyl cellulose in sequence, and stir evenly to prepare 100 g of a transparent organic vehicle.
[0047] Using glyoxylic acid as a reducing agent under alkaline conditions, stepwise reduction of copper sulfate, stannous sulfate and silver nitrate solution to prep...
Embodiment 2
[0050] The glass powder raw material Bi 2 o 3 80g, SiO 2 5g, B 2 o 3 5g, ZnO5g, CeO 2 3g, MoO 3 2g is mixed evenly and put into a crucible, and the crucible with raw materials is heated to a temperature of 1200°C in a muffle furnace to melt and keep warm for 2 hours; after the glass liquid is clear and uniform, pour the clear liquid directly into 2000mL deionized water for water quenching , to obtain coarse glass powder, ball mill the coarse glass powder, and pass through a 400-mesh sieve to obtain 100 g of 3-5 μm glass powder, and the softening point of the glass powder is 400-420° C.
[0051] Mix 50 g of butyl carbitol and 20 g of glyceryl acetate, heat to 95°C, add 20 g of dihydroxyethyl cocoamine and 10 g of ethyl cellulose in sequence, and stir evenly to prepare 100 g of a transparent organic vehicle.
[0052] Using glyoxal as a reducing agent to reduce copper sulfate, stannous sulfate and silver nitrate solution step by step under alkaline conditions to prepare sil...
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