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This is about special metal inks that can be printed to form electrical connections. The inks are made by dissolving a metal compound and a reducing agent in a liquid, staying fluid at room temperature. The claims specifically focus on using these 'fire-through' inks to create electrical contacts on solar panels by depositing them on the anti-reflection coating and then burning them through to connect with the p-n junction.
Why it matters: Since 2012, the solar industry has pushed for ever-lower manufacturing costs and higher efficiency, requiring finer electrical contacts. Advances in industrial inkjet printing and functional materials science could now make this precise, self-reducing metallization method more economically viable for mass production.
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