Proceedings of MATSUS23 & Sustainable Technology Forum València (STECH23) (MATSUS23)
DOI: https://doi.org/10.29363/nanoge.matsus.2023.159
Publication date: 22nd December 2022
Organic solar cells are showing great potential to be employed in indoor and outdoor applications. The utilization of portable electronics, internet of things (IoT), and sensors for wearable and healthcare applications that are used in both indoor and 1-sun conditions highlight the importance of the development of photovoltaic devices that can efficiently perform under different light intensities. In this paper, we fabricated OSCs with polyethyleneimine ethoxylated (PEIE) and a water-based material Poly-lysine as interfacial layers (IFL) and investigated the device's performance under 1-sun and indoor light intensity. Our results show that the choice of the interfacial layer is important and affect significantly the performance of devices. Under 1 sun illumination devices with poly-Lysine as an interfacial layer show the highest average efficiency of 7.72% whereas PEIE-based devices displayed lower average efficiency of 7.13%. Under the low light intensity of 1000 lux Poly-Lysine-based devices due to their low shunt resistance causing leakage current resulting in lower average efficiency of 7.09% while on the contrary PEIE-based devices exhibited increased average efficiency of 12.25%. Our study paves the way toward OPV devices for portable and wearable applications.
This work was supported by the European H2020 project, “Wearable Applications enabled by electronic Systems on Paper (WASP)” (grant no. 825213)
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