Meet the jury seminar: Characterizing perovskite and CIGS tandem solar cells - 2024

We kindly invite you to join the ‘Meet the Jury’ seminar, featuring international speakers to discuss their research on 'Characterizing perovskite and CIGS tandem solar cells'.

This seminar will be given by:

• Prof. dr. Aleksandra Bojar (Centre National de la Recherche Scientifique))

The characterization and optimization of perovskite solar cells are essential for unlocking their full potential in high-efficiency photovoltaic devices. To achieve this, a detailed understanding of the buried interfaces and the selective contacts in these cells is required. By combining advanced techniques such as X-ray photoemission spectroscopy (XPS), ultraviolet photoemission spectroscopy (UPS), and Kelvin probe force microscopy (KPFM), we gain insights into the carrier dynamics and contact selectivity at the critical interfaces in perovskite solar cells. The investigation of these interfaces was possible thanks to our lateral heterojunction structure that was combining two charge extracting layers of different doping type: n-type TiOx and p-type NiOx. These characterizations allow us to study how selective contacts influence charge extraction, which is key to improving overall device performance.

Moving from the study of half-device structures to full solar cells, we focus on optimizing perovskite-CIGS tandem devices through simulation-based approaches. By fine-tuning the recombination layers and transparent conductive oxides (TCOs), we aim to improve light management and carrier transport in these tandem architectures. Our goal is to push the efficiency limit of these tandems towards 30%, providing a significant leap in performance. In this part of presentation, we prove that the optical simulations serve as a great complement of experimental optimization of solar cell devices.

Bio:

I completed my studies in Nanotechnology at Gdansk University of Technology in Poland, then moved to Paris to pursue a PhD and begin my career in the photovoltaic field. My passion for material characterization led me to work with advanced techniques such as KPFM, XPS, and PL. During my PhD, I focused on the perovskite-silicon interface for tandem solar cells. As a postdoc, I contributed to the PERCISTAND project, where I explored perovskite/CIGS tandems, combining device simulation with detailed characterization. Currently, I focus on ultra-thin CIGS solar cells, investigating passivation layers at the ITO/CIGS interface. My work continues to be driven by the belief that, as scientists in the photovoltaic field, we have the responsibility to bring a brighter and more sustainable future to humanity.

This is a Meet the Jury seminar. Additional information on how to apply for these seminars can be found here.

For whom?

• PhD students and postdocs

When and where?

• September 23, 2024 - 10:30-11:30
• Campus Diepenbeek, building D, Room A101

Registration?

• Registration is obligatory here.

Acknowledged as?

• DS ST: category 'advanced discipline-specific knowledge' - seminar from an external speaker