Tackling the Energy Crisis with Phosphorene Nanoribbons

Nov 18 2022Reviewed by Megan Craig, M.Sc. PNRs are ribbon-like strands of the 2D material phosphorous, which like graphene, are composed of layers of atoms that are only single-atom thick. They were produced in 2019 by a group headed by UCL Professor Chris Howard after more than a hundred theoretical studies predicted that they would have a variety of exciting and beneficial characteristics.

Dr. Tom Macdonald demonstrated how PNRs may be easily printed as an additional layer to improve solar cell functioning and efficiency by increasing “hole mobility.” Because “holes” are the opposing partner of electrons in electrical transport, increasing their mobility allows electrical current to move more effectively between device layers.

This is exciting as we discuss how PNRs could have an essential role to plan in our race against climate change. Last year we showed that PNRs can be printed onto perovskite solar cells to improve their efficiency; and allow low-cost printing into thin, flexible films compared to traditional inflexible silicon-based solar cells. Dr. Macdonald, Research Fellow, Queen Mary University of London

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