Tunable Nanosheets for Ambient Energy Storage
Kezia Sasitharan a
a School of Natural and Environmental Sciences, Newcastle University, United Kingdom NE1 7RU
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV25)
Roma, Italy, 2025 May 12th - 14th
Organizers: Filippo De Angelis, Francesca Brunetti and Claudia Barolo
Oral, Kezia Sasitharan, presentation 180
Publication date: 17th February 2025

Smart storage solutions are crucial for balancing the supply and demand of renewable energy to combat climate change. My work explores integrating energy-storage capabilities into renewable energy devices like solar cells, using sustainable, stable, and tunable materials. I will present Metal-organic nanosheets (MONs) comprising earth-abundant non-toxic metals, self-assembled with an organic linker to define their conductivity as viable candidates for energy storage applications. MONs are hybrid materials composed of an organic linker and a metal ion forming robust two-dimensional networks. With molecular modifications tuning their bulk electrical properties, MONs offer a broad design space for energy storage. I will demonstrate that when interfaced with thin film photovoltaic devices, MONs can enable a new generation of energy storable solar cells. 

To sustainably meet the growing energy demands of the world, a substantial increase in the deployment of energy storage technologies is needed. With the increase in the number of deployed devices arises the need to evaluate their end-of-life, transition to a resource efficient circular economy. In this talk, I will also evaluate each component of my device design from an environmental point of view. I will present the various material design routes being developed to enable a sustainable approach both during fabrication and as readily ‘refurbish-able/upgradable’ devices, leveraging the ability to replace MONs repeatedly with no observable loss in functionality over many product generations. My talk will identify features which are conducive to circular economy and identify barriers to resource efficiency for these technologies and suggest some potential solutions and priority areas for future research.

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