Flexible Photosupercapacitors: Towards Self-Powered Portable and Wearable Electronics

Abstract

Flexible Photosupercapacitors: Towards Self-Powered Portable and Wearable ElectronicsFrancesca Brunetti aa Chose- Centre for Hybrid and Organic Solar Energy, Department of Electronic Engineering, University of Rome 'Tor vergata', via del Politecnico 1, 00133 Roma, ItalyMaterials for Sustainable Development Conference (MATSUS)Proceedings of MATSUS Spring 2024 Conference (MATSUS24)#ProMatSol - Exploring Material Properties for Advanced Solar Energy ApplicationsBarcelona, Spain, 2024 March 4th - 8thOrganizers: Marina Freitag and Elizabeth GibsonInvited Speaker, Francesca Brunetti, presentation 393DOI: https://doi.org/10.29363/nanoge.matsus.2024.393Publication date: 18th December 2023Portable applications powered by solar energy face challenges with both sunlight's intermittency and illumination variability from outdoor to indoor transitions necessitating the development of efficient energy storage systems to ensure consistent power availability. In this context, photosupercapacitor could represent a viable solution toward an efficient energy supply. In this presentation, after introducing the concept of photosupercapacitor I will report on the realization of flefible hybrid photosupercapacitor based on the combination of an ultra-flexible carbon screen printed interdigitated supercapacitor on paper and a flexible perovskite solar module (PSM) on PET. This all-flexible device functions as a self-powering unit for both energy conversion and storage. Impressively, the supercapacitor showcases remarkable stability and a coulombic efficiency of 100%. Through a hybrid bifurcated structure designed to enhance their applicability, the supercapacitors were connected in series. They were neatly layered on a paper substrate with the solar module strategically placed on top. The device quickly reached saturated voltage value with exposure to various light intensities such as 1 sun, 1000 lx, 500 lx and 200 lx and displayed a self-discharge beaviour which lasted more than two minutes. With peak overall and storage efficiencies determined to be 2.8% and 23% respectively. The integrated hybrid photosupercapacitor exhibited an extensive potential window of 3.8 V making it an prominent choice for real time application in electronic systems. © FUNDACIO DE LA COMUNITAT VALENCIANA SCITOnanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. 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