Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
DOI: https://doi.org/10.29363/nanoge.matsus.2024.393
Publication date: 18th December 2023
Portable 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.
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