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Synthesis, Characterization, and Optical Properties of New Organic–Inorganic Hybrid Perovskites [(NH3)2(CH2)3]CuCl4 and [(NH3)2(CH2)4]CuCl2Br2

Organic–inorganic hybrid perovskites (OIHs) are exceptionally promising sector of novel materials for optoelectronic applications. Herein, the OIHs of the formula [(NH3)2(CH2)3]CuCl4 labeled by C3CuCl and [(NH3)2(CH2)4]CuCl2Br2 labeled by C4CuClBr are prepared by slow evaporation method. The synthesis process is achieved by mixing equimolar ethanolic solutions ratios (1:1) of their basic components (organic/inorganic). Characterizations of these materials using microchemical analysis, energy dispersion X‐ray (EDX) and X‐ray diffraction (XRD) are discussed. The XRD is used to estimate the crystalline size for prepared compounds and found in the range of 38.8 and 48.8 nm for C3CuCl and C4CuClBr, respectively. The vibrational spectra are studied by Fourier transformation infrared spectroscopy (FTIR) and show the major diffraction peaks of compounds and their assignment. UV‐region strong absorption is clarified in the optical properties studied for Cu hybrid, whereas the bandgap energy estimated via Kubelka–Munk equation and found 2.8 and 3.85 eV for C3CuCl and C4CuClBr, respectively.