REMOVAL OF LIGAND TOXICITY BY AMINO ACIDS FOR GREEN LUMINESCENT MAPbBr3 : A GREEN APPROACH

Abstract

We have reported low toxic essential amino acids as bidentate ligand for synthesis of MAPbBr3 perovskite nanocrystals with excellent optical properties. This investigation shows that mechanochemical method is preferred over conventional colloidal chemistry during synthesis. To better understand the optoelectronic property, different amino acids have been studied and compared. All morphological and optical studies are performed to characterize the synthesized perovskite nanoparticles. Later, stability studies are investigated through Thermogravimetric analysis, temperature dependent PL, time dependent XRD as well XPS studies. Interestingly, these perovskites show high luminescence upon scratching on flexible conducting plates and on plain paper surface. This investigation demonstrates the importance of generating high quality fluorescent nanoparticle for photonic applications including light emitting diodes and imaging.