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Updated: Jan 7, 2026

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
Published on: September 8, 2017
Synthesis and Characterization of Methylammonium Strontium Bromide Hybrid Perovskite
Rituparna Patra1, Gideon Odonkor1, Samuel O Odoh1
1Department of Chemistry, University of Nevada, Reno, Nevada 89557, United States.
None:
In this paper, we synthesized Sr-containing hybrid perovskite, methylammonium strontium bromide (MASrBr3), and investigated its properties. We report the preparation of MASrBr3 thin films and studied the effects of annealing temperature, annealing time, and precursor solution concentration on crystal growth using X-ray diffraction (XRD) and UV-vis spectroscopy. The composition and crystalline nature of the MASrBr3 thin film were further confirmed using XRD and SEM-EDX. We explored the stability of the MASrBr3 thin films in three solvents and the electrochemical stability of MASrBr3 in an ionic liquid (IL), 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide. From this study, we observed that MASrBr3 was stable from -1.75 to 0.35 V vs Fc/Fc+. Lastly, we determined that the MASrBr3 thin films possess an indirect band gap of 4.52 eV, which is corroborated by density functional theory (DFT) calculations. Taken together, these results indicate that the synthesized MASrBr3 perovskite is viable for future high-bandgap device applications.
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