In the last decade, perovskite solar cells (PSCs) have emerged as a low-cost, thin-film technology with unprecedented efficiency gains from 3.8% in 2009 to
25.7% in 2022. Perovskites can be processed from inexpensive solution-based methods and have exceptional material properties that are comparable to
established GaAs or Si. The combination of high-quality semiconductors with low-cost deposition techniques are an attractive match creating great excitement
and anticipation far beyond academia because PSCs may have the potential to outcompete established thin-film technologies or can be combined with them
for further performance enhancements. Although progress has been related mostly to the short-term performance of devices, initially little attention was paid so
far to their long-term implications. With a current photovoltaic conversion efficiency compatible with commercialization, long-term stability and up-scaling are
receiving more and more attention.
In the past 2 years, there has been a push to understand further the mechanisms that drive stability in perovskite materials, with rapid progress towards stable
devices in the long-term. This symposium explores fundamental questions and challenges, focusing on the material’s properties that make perovskites so
remarkable, and the current understanding of the device physics, including the raising of lead-free alternatives with a fast growth in the last few years. One
main driver were novel synthesis and characterization methods having established a distinct direction within the research community now. The outstanding
properties of halide perovskites have not just been successfully applied in solar cells but also in a wide range of optoelectronic devices, such as light-emitting
devices, lasers, memristors or detectors. The scope beyond photovoltaics will thus be one main focus of the symposium.
Finally, there is a designated session on the progress of long-term stability, and the evolution towards modules, in order to provide an outlook on how close
PSCs are to commercialization.
Symposium Organizers
Michael Saliba
Universitat Stuttgart
Institute for Photovoltaics
Germany
Iván Mora-Seró
Universitat Jaume I
Spain
Carolin Sutter-Fella
Lawrence Berkeley National Laboratory
Chemical Sciences Division
USA
Yuanyuan Alvin Zhou
Hong Kong University of Science and Technology
China