Innovative Approach to Bismuth-Antimony-Iodide Double Perovskite PV Absorbers via Anion Exchange and Solide-State Reactions
Year: 2025
Type: conference-paper
Abstract: This work focuses on the development of advanced synthesis protocols for lead-free Cs2AgBi(Sb)Br6 perovskites and their conversion into lower-bandgap Cs2AgBi(Sb)I6 perovskite PV absorbers by using an innovative combination of mild anion exchange with a solid-state reaction between intermediate iodide derivatives. High-throughput robot-assisted experimentation is applied for the optimization of the synthesis conditions, targeting the highest yields of Cs2AgBi(Sb)I6 perovskites (ca. 90 mass%) with the lowest bandgap (1.78 eV). We provide new insights into the pathways, mechanisms, and dynamics of the formation of iodide double perovskites, reporting stable lead-free double iodide perovskites crystallized in a non-conventional tetragonal symmetry.
Source: EU PVSEC
Authors: Stroyuk, Oleksandr, Raievska, Oleksandra, Kinge, Sachin, Hauch, Jens, Brabec, Christoph J.
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7106214933
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