Composite silver electrode paste with low-silver mobility for crystalline silicon solar cell and preparation method of composite silver electrode paste
A technology for solar cells and crystalline silicon, applied to conductive materials dispersed in non-conductive inorganic materials, cable/conductor manufacturing, circuits, etc., can solve problems such as reducing silver mobility, achieve reduced mobility, reduced contact resistance, Good effect on welding performance
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Embodiment 1
[0038]Step A: Preparation of glass frit: weigh 1.0wt% bismuth oxide, 22.0wt% tellurium oxide, 65.0wt% lead oxide, 3.0wt% sodium oxide, 8.0wt% phosphorus pentoxide, 1.0wt% silver oxide; After mixing the above-mentioned raw materials evenly by the feeder, put it in a platinum crucible, place it in a high-temperature resistance furnace for smelting, smelt at 1000 ° C for 1 hour, take it out, water quench, pulverize, ball mill, sieve, dry at 65 ° C and sieve to obtain Glass powder, the average particle size is 0.2-0.8μm;
[0039] Step B: Preparation of organic carrier: weigh 63.0wt% diethylene glycol butyl ether, 12.0wt% diethylene glycol dibutyl ether, 12.0wt% butyl carbitol acetate, 15.0wt% ethyl cellulose, 5.0 wt% of the surfactant Span 85, 2.0wt% of the anti-settling agent organobentonite; first add diethylene glycol butyl ether, diethylene glycol dibutyl ether and butyl carbitol acetate into a stainless steel container and mix, Then add ethyl cellulose in the stirring proces...
Embodiment 2
[0049] Step A: Weigh 8.0wt% bismuth oxide, 18.0wt% tellurium oxide, 53.0wt% lead oxide, 1.0wt% sodium oxide, 5.0wt% phosphorus pentoxide, 12.0wt% silver oxide, 3.0wt% boron oxide. After mixing the above raw materials evenly with a three-dimensional mixer, put them in a platinum crucible, place them in a high temperature resistance furnace for smelting, smelt at 1100 °C for 1 hour, take them out, water quench, pulverize, ball mill, sieve, and dry at 75 °C. The glass powder is obtained by sieving, and the average particle size is 0.3-1.5 μm;
[0050] Step B: Preparation of organic carrier: weigh 64.0wt% diethylene glycol butyl ether, 15.5wt% diethylene glycol dibutyl ether, 10.0wt% butyl carbitol acetate, 6.0wt% ethyl cellulose, 8.0 wt % of the surfactant Span 85, 6.0 wt % of the anti-settling agent organic bentonite; first add diethylene glycol butyl ether, diethylene glycol dibutyl ether and butyl carbitol acetate into a stainless steel container and mix, Then add ethyl cellu...
Embodiment 3
[0060] Step A: Weigh out 5.0wt% bismuth oxide, 70.0wt% tellurium oxide, 15.0wt% lead oxide, 2.0wt% sodium oxide, 2.0wt% phosphorus pentoxide, 5.0wt% silver oxide, 1.0wt% boron oxide; After the three-dimensional mixer mixes the above raw materials evenly, it is placed in a platinum crucible, placed in a high-temperature resistance furnace for melting, and smelted at 900 ° C for 1 hour. Sieve to obtain glass powder with an average particle size of 0.3-1.5 μm;
[0061] Step B: Preparation of organic carrier: Weigh 60.0wt% diethylene glycol butyl ether, 8.0wt% terpineol, 12.0wt% diethylene glycol dibutyl ether, 10.0wt% butyl carbitol acetate, 3.0wt% % ethyl cellulose, 1.0 wt % nitrocellulose, 4.0 wt % of surfactant Span 85, 4.0 wt % of anti-settling agent organobentonite. First add diethylene glycol butyl ether, terpineol, diethylene glycol dibutyl ether and butyl carbitol acetate into a stainless steel container and mix, then add ethyl cellulose during the stirring process, and ...
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