Preparation method of sea urchin-shaped silver powder for thin-film solar cell silver paste
A solar cell, sea urchin-shaped technology, applied in the field of preparation of sea urchin-shaped silver powder, can solve the problems of difficult process control, easy to be oxidized, reduced electrical conductivity, etc., and achieve the effects of reducing cost, not easy to agglomerate, and improving electrical conductivity
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Embodiment 1
[0026] Add 50 parts by weight of zinc acetate into 600 parts by weight of deionized aqueous solution and stir until completely dissolved, then slowly add ammonia with a concentration of 10% and keep stirring until the white precipitate formed is completely dissolved to generate zinc ammonia complex ion solution; the final addition amount is 1% sodium borohydride of the mass of the zinc ammonia complex ion solution and 0.15% PVP of the mass of the zinc ammonia complex ion solution were stirred for 30 minutes, the solution system was heated at 120°C for 3 hours, cooled, filtered, washed and dried to obtain sea urchin-like oxidation zinc powder. The obtained sea urchin-like zinc oxide powder was dispersed in an aqueous solution prepared by 7.5 parts by weight of stannous chloride, vigorously stirred for 1 hour, and then centrifuged to collect the precipitate to obtain surface-adsorbed Sn 2+ of zinc oxide. Dissolve 10 parts by weight of silver nitrate in 50 parts by weight of dei...
Embodiment 2
[0028] Add 52 parts by weight of zinc acetate into 650 parts by weight of deionized aqueous solution and stir until it is completely dissolved, then slowly add ammonia water with a concentration of 10% and keep stirring until the white precipitate formed is completely dissolved to form a zinc ammonia complex ion solution; the final addition amount is zinc 1.5% sodium borohydride of the mass of the ammonia complex ion solution and 0.15% PVP of the mass of the zinc ammonia complex ion solution were stirred for 30 minutes, the solution system was heated at 120°C for 3 hours, cooled, filtered, washed and dried to obtain sea urchin-like zinc oxide powder. The obtained sea urchin-shaped zinc oxide powder was dispersed in an aqueous solution prepared by 8.5 parts by weight of stannous chloride, vigorously stirred for 1.2 hours, and then centrifuged to collect the precipitate to obtain surface-adsorbed Sn 2+ of zinc oxide. Dissolve 10.5 parts by weight of silver nitrate in 52 parts b...
Embodiment 3
[0030] Add 53 parts by weight of zinc acetate into 700 parts by weight of deionized aqueous solution and stir until it is completely dissolved, then slowly add ammonia water with a concentration of 12% and keep stirring continuously until the white precipitate formed is completely dissolved to form a zinc ammonia complex ion solution; the final addition amount is zinc 2% sodium borohydride of the mass of the ammonia complex ion solution and 0.2% PVP of the mass of the zinc ammonia complex ion solution were stirred for 35 minutes, the solution system was heated at 120°C for 3.5 hours, cooled, filtered, washed and dried to obtain sea urchin-like oxidation zinc powder. The obtained sea urchin-like zinc oxide powder was dispersed in an aqueous solution prepared by 9 parts by weight of stannous chloride, vigorously stirred for 1.5 hours, and then centrifuged to collect the precipitate to obtain surface-adsorbed Sn 2+ of zinc oxide. Dissolve 11 parts by weight of silver nitrate in ...
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