Bismuth- and antimony-containing nanocrystals for future photovoltaics
Fabian Paulus a
a Institute for Materials Chemistry, Leibniz-Institute for Solid State and Materials Research (IFW) Dresden
Materials for Sustainable Development Conference (MATSUS)
Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
Emerging Inorganic Photoabsorbers: Beyond ABX3 Perovskites - #NextGenSolar
Sevilla, Spain, 2025 March 3rd - 7th
Organizers: Nakita Noel, Jay Patel and Marcello Righetto
Invited Speaker, Fabian Paulus, presentation 531
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.531
Publication date: 16th December 2024

Solar cells based on nanocrystals have seen increasing interest in recent years due to the continuous rise in their power conversion efficiency. The most efficient cells are often based on nanocrystals that contain lead, such as lead sulfide (PbS) or metal halide perovskites (e.g., FAPbI3 or CsPbI3). While these nanocrystals lead to high efficiencies, they raise concerns regarding their large-scale applicability due to the environmental hazards they pose. In this talk, I will discuss the synthesis and application in solar cells of lead-free nanocrystals, such as those based on bismuth and antimony. I will present a method to synthesize an array of compositions by cation exchange, a simple, low-temperature process. Finally, I will introduce a facile templated growth of small antimony sulfide (Sb2S3) nanorods that are of great interest for application in photovoltaics.

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