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28th Congress of SCTM

23–26 Sept 2026
Metropol Lake Resort
Europe/Zurich timezone

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SYNTHESIS AND CHARACTERIZATION OF THE NOVEL MIXED-HALIDE PEROVSKITE DMAPbI1.5Cl1.5

Not scheduled
10m
Metropol Lake Resort

Metropol Lake Resort

Naselba Dolno Konjsko bb, 6000 Ohrid, N. Macedonia
E-poster Physical, structural chemistry, spectroscopy and electrochemistry

Speaker

Jeta Sela (Department of Chemistry, Faculty of Natural Sciences and Mathematics, University of Tetovo, Tetovo, North Macedonia)

Description

Hybrid organic–inorganic perovskites are promising materials for energy-related applications owing to their tunable optoelectronic properties.1 In this work, the novel mixed-halide perovskite [(CH3)2NH2]PbI1.5Cl1.5 (DMAPbI1.5Cl1.5), within the DMAPbX3 (X = I, Br, Cl) family, was synthesized and characterized. The compound was prepared in N,N-dimethylformamide from pre-synthesized DMAPbI3 and DMAPbCl3 precursors,2 yielding a light-yellow crystalline product. Powder X-ray diffraction (PXRD) confirmed the formation of a crystalline mixed-halide phase distinct from the parent compounds. Scanning electron microscopy (SEM) revealed porous aggregated microcrystals, while energy-dispersive X-ray spectroscopy (EDX) confirmed an approximately 1:1 atomic ratio of iodine to chlorine, consistent with the targeted composition. Infrared and Raman spectroscopy confirmed the structural integrity of both the organic cation and the metal-halide framework. Cyclic voltammetry performed in dichloromethane containing tetrabutylammonium perchlorate (TBAPC) as the supporting electrolyte revealed redox activity and progressive current decay during successive scans, indicating partial electrochemical degradation of the compound.

Keywords: DMAPbI1.5Cl1.5, mixed-halide perovskite, PXRD, SEM-EDX, vibrational spectroscopy, cyclic voltammetry

Author

Jeta Sela (Department of Chemistry, Faculty of Natural Sciences and Mathematics, University of Tetovo, Tetovo, North Macedonia)

Co-authors

Prof. Arianit Reka (Department of Chemistry, Faculty of Natural Sciences and Mathematics, University of Tetovo, Tetovo, North Macedonia) Mrs Besarta Ramadani (Faculty of Technological Sciences, Mother Teresa University, 1000 Skopje, North Macedonia) Dr Leon Stojanov (Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia) Prof. Miha Bukleski (Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia) Prof. Slobotka Aleksovska (Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia) Prof. Valentin Mirceski (Institute of Chemistry, Faculty of Natural Sciences and Mathematics, Ss. Cyril and Methodius University, Skopje, North Macedonia)

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