Contribution to a conference proceedings

FZJ-2026-01177

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Innovative Approach to Bismuth-Antimony-Iodide Double Perovskite PV Absorbers via Anion Exchange and Solide-State Reactions42nd European Photovoltaic Solar Energy Conference and Exhibition

Stroyuk, O. (Corresponding author)FZJ* ; Raievska, O.FZJ* ; Kinge, S. ; Hauch, J.FZJ* ; Brabec, C.FZJ*

2025
WIP-Munich

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Please use a persistent id in citations: doi:10.4229/EUPVSEC2025/2DO.8.3

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.

Keyword(s): Thin-Films and New Concepts ; Perovskites

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Contributing Institute(s):

1. Helmholtz-Institut Erlangen-Nürnberg Erneuerbare Energien (IET-2)

Research Program(s):

1. 1212 - Materials and Interfaces (POF4-121) (POF4-121)

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