Synthesis of NH2CH5=NH2 based mixed halide Perovskite nanoparticles using single step low temperature microwave assisted heating

Abstract

The present paper reports the synthesis and characterization of mixed halide based formamidinium lead Perovskite nanoparticles having general formula [HC(NH2)2]PbInBr3-n. A single step low temperature chemical route using microwave reactor is reported. The Perovskites synthesized were characterized using X-ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR) and Transmission electron microscopy (TEM). The X-ray diffraction revealed phase purity and tetragonal structure whereas TEM micrographs found that the synthesized particles are at 10-12 nm, 12-15 nm, 15- 20 nm and 20-22 nm for FAPbI3, FAPbBr3, FAPbBrI2 and FAPbIBr2 respectively. Optical properties and molecular bonding of the Perovskites was investigated by Fourier transform infra-red spectroscopy.

Keywords

• Formamidinium
• Low temperature synthesis
• Mixed halide
• Microwave reactor
• Perovskite