Mechanosynthesis of Layered Double Perovskites with Aromatic Spacer Cations for Lead‐Free Thin‐Film Opto(electro)ionics
: Ghasemi, Maryam; Bravetti, Gianluca; Loizos, Michalis; Tountas, Marinos; AlSabeh, Ghewa; Kumar, Mahesh; Kymakis, Emmanuel; Rogdakis, Konstantinos; Golobostanfard, Mohammad Reza; Milić, Jovana V.
Publisher: Wiley
: 2026
ChemPhysChem
: e202500764
: 27
: 6
: 1439-4235
: 1439-7641
DOI: https://doi.org/10.1002/cphc.202500764
: https://doi.org/10.1002/cphc.202500764
: https://research.utu.fi/converis/portal/detail/Publication/516106809
In the quest for stable, eco-friendly, lead-free halide perovskites, layered double perovskite semiconductors are promising derivatives that remain underexploited. We demonstrate the use of mechanosynthesis to access these materials for silver(I) and bismuth(III) analogues incorporating benzylammonium and 1,4-phenylenedimethylammonium bromide cations in Ruddlesden–Popper and Dion–Jacobson phases, respectively. Their thin films were fabricated and analysed by a combination of techniques, demonstrating the potential use in thin-film opto(electro)ionics.
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G.B. and J.V.M. appreciate the support of DFG-SPP project 186453 and the Swiss National Science Foundation (SPARK project no. 221017) for enabling preliminary work, as well as Prof. Ullrich Steiner at the Adolphe Merkle Institute for his support over the years. J.V.M. further appreciates the support from the Swiss Leading House for South Asia through the partnership grant with M.K., and especially the talented young researcher, Mubashir M. Ganaie, whose work has contributed significantly to the continuation of these research developments. M.M., M.R.G., and J.V.M. are grateful to the Research Council of Finland (project no. 362642) for supporting this research, and J.V.M. and M.R.G. further acknowledge the support by the European Research Council under the EU Horizon innovation program (grant agreement no. 101114653, SmartHyMat). The research project is implemented within the framework of the H.F.R.I. call “Basic Research Financing (Horizontal Support of All Sciences)” under the National Recovery and Resilience Plan “Greece 2.0,” funded by the European Union – NextGenerationEU (H.F.R.I. Project Number: 14728) and with the support from the European Union's Horizon 2020 research and innovation program under project INFRACHIP (grant agreement no. 101131822), and project ELEGANCE (grant agreement no. 101161114) for which M.L., M.T., K.R., and E.K. are grateful. The authors also acknowledge the support of Dr. Felix Eickemeyer at the Laboratory of Photonics and Interfaces (LPI) at EPFL in Switzerland for performing the PL and TRPL measurements, Dr. Masaud Almalki for his support in the analysis (LPI, EPFL), and Dr. Laura Piveteau (ISIC-NMRP, EPFL) and Rémy Lucien Michel Fontaine for support with NMR spectroscopy.
Open access publishing facilitated by Turun yliopisto, as part of the Wiley - FinELib agreement.
Open access publishing facilitated by Turun yliopisto, as part of the Wiley - FinELib agreement.
