Synthesis and Characterization of DMASnBr3 Perovskite Material
7th International Conference on Applied Engineering and Natural Sciences, Konya, Türkiye, 15 - 16 Mayıs 2025, ss.81, (Özet Bildiri)
- Yayın Türü: Bildiri / Özet Bildiri
- Basıldığı Şehir: Konya
- Basıldığı Ülke: Türkiye
- Sayfa Sayıları: ss.81
- Süleyman Demirel Üniversitesi Adresli: Evet
Özet
Hybrid halide perovskite solar cell research has expanded beyond the methylammonium lead triiodide (CH3NH3PbI3 or MAPI). Multiple cations, metal substitutions, and mixed halide approaches were addressed separately or together in the AMX3 structure, where A and M represent a monovalent and divalent cation, respectively, and X symbolizes a halide. Due to environmental and health concerns associated with lead, perovskite techniques often utilize Bi3+, Sn2+, Ge2+, and Sb3+ cations instead, which share leads ns2np0 electronic configuration. Crucially, these alternative perovskites must exhibit sufficient solubility for longterm stability and efficient solar energy conversion. Tin (Sn), a less toxic and more abundant alternative to lead (Pb), possesses a crystal structure like lead perovskite. Tin-based perovskites demonstrate promising absorber characteristics, including an ideal band gap, high charge carrier mobility, and long hot carrier lifetime. In this study, dimethyl ammonium bromide (DMABr) was synthesized by reacting dimethylamine with hydrobromic acid (HBr) in an ice bath for 2 hours, then vacuum-dried. The precipitate was washed with diethyl ether and vacuum-dried to yield DMABr. The perovskite ink prepared with SnBr2 salt and DMABr organic halide was deposited on glass by the Ultrasonic Spray Pyrolysis (USP) method, and DMASnBr₃ perovskite thin film was formed by annealing the structure. Structural, morphological, elemental, and electro-optical analyses of the perovskites were studied with XRD, SEM, EDS, and UV-Vis systems.