Kolkata researchers use human hair to produce cathodes for solar cells

iiser ResearchersKolkata researchers use human hair to produce cathodes for solar cells:

Researchers at the Indian Institute of Science Education and Research (IISER) in Kolkata have used human hair to produce cost-effective, metal-free cathodes for use in solar cells. This is the first instance where a bio-waste-derived electrode has been used as cathode in a quantum dot sensitised solar cell device.

While metal-free cathodes produced in the past have not performed as well as the traditional metal-based ones, the performance of graphitic porous carbon cathode produced by a team, led by Prof. Sayan Bhattacharyya from the Department of Chemical Sciences, has been at par with metal-based cathodes. The results have been published in the journal Carbon.

Besides its higher efficiency to convert visible sunlight to electricity, the cathode was found to generate high open-circuit voltage, which is at par with conventional platinum and activated carbon cathodes. Thereby, the power conversion efficiencies can also be enhanced.

Besides its higher efficiency to convert visible sunlight to electricity, the cathode was found to generate high open-circuit voltage, which is at par with conventional platinum and activated carbon cathodes. Thereby, the power conversion efficiencies can also be enhanced.

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