Abstract: In recent year, 2D layered materials, such as molybdenum disulfide (MoS2), have attracted strong interest in developing high-performance heterojunction solar cell, due to their desirable optical and electrical properties [1,2]. It has been reported that MoS2 exhibits one order of magnitude higher sun light absorption than Si and GaAs [3]. These solar cells have demonstrated power conversion efficiencies (PCEs) of up to a few percent in just a few nanometer-thick layers [4].In this work it is presented the deposition of MoS₂ on fluorine-doped tin oxide (FTO) via drop casting as a novel approach for heterojunction fabrication in photovoltaic cell applications. This technique allows for maintaining low processing temperatures, which is crucial for the stability of the underlying layers. The MoS₂/FTO configuration aims to enhance the efficiency of solar cells by leveraging MoS₂’s unique optoelectronic properties. The work focuses on innovative materials and structures to optimize photovoltaic performance while maintaining cost-effectiveness. The findings contribute to advancing sustainable energy technologies through the development of advanced cell architectures. References: [1] L. Z. Haoet al., High-performance n-MoS2/i-SiO2/p-Si heterojunctionsolar cells, Nanoscale, 7, 8304, (2015).[2] Y. Zhang et Al., The effectof MoS2 modulateddoping with molybdenum-oxideon the photovoltaicperformance for MoS2/n-Si heterojunctionsolar cells, Solar Energy 208 (2020) 1048–1057.[3] M. Bernardi, M. Palummoand J. C. Grossman, Nano Lett., 13, 3664, (2013).[4] Wang, L., et al., “2D photovoltaicdevices: progress and prospects”, Small Methods2, 1700294 (2018). This poster was presented by Vittoria Anastasi (University of Catania) at the 7th International Workshop on Silicon Heterojunction Solar Cells.

The FreeHydroCells project, a European multi-partner consortium led by University College Cork (UCC), has secured nearly €3.75 million in Horizon Europe research funding for over three years of pioneering research. If successful, this initiative could deliver a low-cost solar-to-chemical energy conversion system, utilising sustainable materials. Learn more at freehydrocells.eu. This project is funded by the European Union under grant agreement No. 101084261 (FreeHydroCells) and supported in part by Science Foundation Ireland (SFI) under Grant Number 12/RC/2278-P2 (AMBER).