Organic extract mediated synthesis of stable methylammonium lead bromide nanoparticles

Abstract

The growth of methylammonium lead bromide (CH₃NH₃PbBr₃) nanoparticles using ligand-assisted Re-precipitation technique expending extract from the GAC fruit along with the anti-solvent is reported in the present work. The extract from Gac-aril was synthesized in N,N-dimethylformamide (DMF) solution. We report the presence of blue-green luminescence in the GAC aril extract. We demonstrate that the use of GAC-aril extract along with the anti-solvent for the growth of CH₃NH₃PbBr₃ results in increasing the optical absorption bandwidth in the visible wavelength region relative to that of CH₃NH₃PbBr₃ nanoparticles grown without the use of the GAC aril extract. The photoluminescence of CH₃NH₃PbBr₃ nanoparticles prepared using the organic extract exhibits a blue emission at ~ 487 nm which is blue shifted relative to the green luminescence observed at ~ 528 nm in CH₃NH₃PbBr₃ quantum dots prepared without the use of the extract. Bias dependent photo sensitivity is exhibited by the hetero-contact device structure glass/F:SnO₂/TiO₂/GAC-CH₃NH₃PbBr₃// electrolyte/F:SnO₂/glass engineered using the CH₃NH₃PbBr₃ nanoparticles grown expending the organic extract.