Silver electrocondution slurry for solar battery
A solar cell and conductive paste technology, which is applied to conductive materials, circuits, electrical components, etc. dispersed in non-conductive inorganic materials, can solve the problem of large ohmic resistance, unsatisfactory photoelectric conversion efficiency of solar cells, and silver conductive paste. Problems such as unsatisfactory adhesion
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Embodiment 1
[0024] Weigh the raw materials according to the mass ratio (calculated in 100g):
[0025] Silver powder: 75g (52.5g spherical silver powder, D 50=1.2μm; flake silver powder 22.5g, D 50 =1.3μm) (the purity of silver powder is about 99.5%);
[0026] Aluminum powder: 3g (D 50 =5.3μm, the purity of aluminum powder is about 99%);
[0027] Lead oxide powder: 7g (D 50 =12.7μm, the purity of lead oxide powder is about 99.5%;
[0028] Organic vehicle: 15g (terpineol 3.5g, butyl carbitol 8g, ethyl cellulose 0.5g, epoxy resin 2.5g, dimethyl adipate 0.5g);
[0029] After initial mixing of all raw materials, grind them uniformly on a special three-roller mill to prepare front-side silver conductive paste for solar cells.
Embodiment 2
[0031] Weigh the raw materials according to the mass ratio (calculated in 100g):
[0032] Silver powder: 86g (55.9g spherical, D 50 =1.2μm; Flake 30.1g, D 50 =1.3μm) (the purity of silver powder is about 99.5%);
[0033] Aluminum powder: 2g (D 50 =5.3μm, the purity of aluminum powder is about 99%);
[0034] Lead oxide powder: 2g (D 50 =12.7μm, the purity of lead oxide powder is about 99.5%);
[0035] Organic vehicle: 10g (terpineol 2.5g, butyl carbitol 5g, ethyl cellulose 0.5g, epoxy resin 1.4g, dimethyl adipate 0.6g);
[0036] After preliminarily mixing all raw materials, grind them uniformly on a three-roll mill to obtain the front-side silver conductive paste for solar cells.
Embodiment 3
[0038] Weigh the raw materials according to the mass ratio (calculated in 100g):
[0039] Silver powder: 75g (52.5g spherical silver powder, D 50 =1.2μm; flake silver powder 22.5g, D 50 =1.3μm) (the purity of silver powder is about 99.5%);
[0040] Aluminum powder: 1.5g (D 50 =5.3μm, the purity of aluminum powder is about 99%);
[0041] Lead oxide powder: 7g (D 50 =12.7μm, the purity of lead oxide powder is about 99.5%);
[0042] Organic vehicle: 16.5g (terpineol 3.5g, butyl carbitol 9.5g, ethyl cellulose 0.5g, epoxy resin 2.5g, dimethyl adipate 0.5g);
[0043] After initial mixing of all raw materials, grind them uniformly on a special three-roller mill to prepare front-side silver conductive paste for solar cells.
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