Reducing silver use in heterojunction solar cells via low-cost copper wires

A research team in Germany has proposed to use direct wire bonding to reduce silver consumption in heterojunction solar cells. The scientists used low-cost copper wires as electrodes with conductive paste applied in discrete pads to replace the traditional metallization and interconnection process. A research team led by German research center Forschungszentrum Jülich GmbH has proposed to use direct wire bonding (DWB) as a low-temperature method for interconnecting finger-free heterojunction (HJT) solar cells on the front side using low-cost, highly conductive copper (Cu) wires. "Our study demonstrated ...

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