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Control of the Crystal Growth Shape in CH3NH3PbBr3 Perovskite Materials

Authors: Quyet Van Le, Jong Wook Shin, Jin-Hee Jung, Jongee Park, Abdullah Ozturk, Soo Young Kim
Publication date: 2017/11/1
Journal: Journal of Nanoscience and Nanotechnology
Volume: 17
Issue: 11
Pages: 8169-8174
Publisher: American Scientific Publishers
CH3NH3PbBr3 (MAPbBr3) materials with perovskite structure were grown by a two-step process using Pb(CH3COO)2·3H2O and methyl amine bromide (MABr). By changing the concentration of MABr in isopropyl alcohol (IPA) solvent and the annealing temperature, the shape of CH3NH3PbBr3 materials can be controlled to afford nanocubes, nanowires, nanorods, and wrinkled structures. MAPbBr3 with single cubic structure was obtained at a MABr concentration of 3 mg/mL in IPA, and a nanorod array of MAPbBr3 was realized at a MABr concentration of 9 mg/mL in IPA at room temperature. Uniformly wrinkled shapes were formed after the synthesis temperature was increased to 60 and 90 °C. The X-ray diffraction patterns, Fourier transform infrared spectra, and X-ray photoelectron spectra of CH3NH3PbBr3 nanorods confirmed that the pure perovskite phase was obtained by dipping Pb(CH3COO)2·3H2O in …

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