Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
DOI: https://doi.org/10.29363/nanoge.matsus.2024.268
Publication date: 18th December 2023
The pursuit of efficient and stable perovskite solar cells (PSCs) has propelled investigations into the nuanced realm of charge extraction dynamics. This presentation delves into the comprehensive exploration of charge extraction effects on the efficiency and stability of PSCs, encompassing the intricacies associated with mixed organic-inorganic, inorganic, and lead-free perovskite types. Special attention is devoted to the burgeoning topic of self-assembled monolayers (SAMs), with a focus on the critical role played by hole and electron-selective SAMs in tailoring charge extraction processes [1].
A focal point of our study involves the application of time-resolved surface photovoltage (TR-SPV) as the principal methodology. TR-SPV emerges as a novel and powerful technique, enabling the elucidation of charge dynamics within the remarkably short time scale of 1 nanosecond to 100 milliseconds. Through this method, we unravel the subtle intricacies governing charge extraction, shedding light on the temporal evolution of carrier behavior at the interface [1,2].
The discourse spans an investigation into the influence of various perovskite compositions and structures on charge extraction mechanisms. Our exploration includes a detailed analysis of mixed organic-inorganic, purely inorganic, and lead-free perovskite solar cells [3]. Additionally, we delve into the role of SAMs in modulating charge extraction dynamics, offering insights into their tailored design for enhanced PSC performance.
As a testament to the practical implications of our findings, this presentation culminates in the demonstration of a PSC device exhibiting exceptional stability. The device, subjected to rigorous testing, showcases remarkable resilience, maintaining its structural and functional integrity for an unprecedented 3000 hours without any discernible signs of degradation. This endeavor not only advances our understanding of charge extraction dynamics but also underscores the potential for achieving prolonged stability in perovskite solar cell technology.
This project has received funding from the European Union’s Horizon research and innovation programm under the Marie Skłodowska-Curie grant agreement No 101061809 (HyPerGreen).
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