A kind of photovoltaic ribbon and preparation method thereof
A photovoltaic ribbon and solder technology, applied in photovoltaic power generation, semiconductor devices, electrical components, etc., can solve the problems of inconvenient processing procedures, increase the production process of ribbon, and cannot reduce the mechanical properties of ribbon, so as to improve the electrical conductivity and photoelectricity. Conversion efficiency, reduction of photoelectric conversion efficiency loss, and the effect of facilitating industrial production and application
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Embodiment 1
[0026] A photovoltaic soldering strip, comprising a copper substrate and tin-lead alloy solder coated on the copper substrate, the tin-lead alloy solder contains 5.5% copper-tin alloy, 11% silver-tin alloy and 0.6% phosphorus-tin alloy, wherein , the mass ratio of copper to tin in the copper-tin alloy is 5:95, the mass ratio of silver to tin in the silver-tin alloy is 5:95, and the mass ratio of phosphorus to tin in the tin alloy is 5:95.
[0027] The preparation method of the above-mentioned photovoltaic ribbon includes the following preparation steps:
[0028] Step 1, adding copper-tin alloy, silver-tin alloy and phosphorus-tin alloy to the tin-lead alloy solder, heating and melting at 235°C to obtain photovoltaic ribbon coating;
[0029] Step 2, coating the photovoltaic ribbon coating on the surface of the copper strip at 80m / min, cooling to room temperature, and collecting the materials to obtain the photovoltaic ribbon.
Embodiment 2
[0031] A photovoltaic soldering strip, comprising a copper substrate and tin-lead alloy solder coated on the copper substrate, the tin-lead alloy solder contains 5.5% copper-tin alloy, 2% silver-tin alloy and 0.2% phosphorus-tin alloy, wherein , the mass ratio of copper to tin in the copper-tin alloy is 5:95, the mass ratio of silver to tin in the silver-tin alloy is 5:95, and the mass ratio of phosphorus to tin in the phosphorus-tin alloy is 5:95.
[0032] The preparation method of the above-mentioned photovoltaic ribbon includes the following preparation steps:
[0033] Step 1, adding copper-tin alloy, silver-tin alloy and phosphorus-tin alloy to the tin-lead alloy solder, heating and melting at 230°C to obtain photovoltaic ribbon coating;
[0034] Step 2, coating the photovoltaic ribbon coating on the surface of the copper strip at a rate of 90 m / min, cooling to room temperature, and collecting the materials to obtain the photovoltaic ribbon.
Embodiment 3
[0036] A photovoltaic soldering strip, comprising a copper substrate and tin-lead alloy solder coated on the copper substrate, the tin-lead alloy solder contains 1% copper-tin alloy, 20% silver-tin alloy and 1% phosphorus-tin alloy, wherein , the mass ratio of copper to tin in the copper-tin alloy is 5:95, the mass ratio of silver to tin in the silver-tin alloy is 5:95, and the mass ratio of phosphorus to tin in the phosphorus-tin alloy is 5:95.
[0037] The preparation method of the above-mentioned photovoltaic ribbon includes the following preparation steps:
[0038] Step 1, adding copper-tin alloy, silver-tin alloy and phosphorus-tin alloy to the tin-lead alloy solder, heating and melting at 230°C to obtain photovoltaic ribbon coating;
[0039] Step 2, coating the photovoltaic ribbon coating on the surface of the copper strip at 80m / min, cooling to room temperature, and collecting the materials to obtain the photovoltaic ribbon.
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