Optical and structural effects of Copper doping on 2d layered (ba) 2 pbcl 4 perovskite

Abstract

Two dimensional perovskites have emerged as interesting candidates for optoelectronic and photovoltaic applications due to their enhanced stability and tunability options. Doping perovskites enable altering their optoelectronic properties to achieve exciting properties. In this thesis, two dimensional perovskites (BA) 2 PbCl 4 was synthesised and doped with Copper. Their optical, structural and electronic properties were characterised using DRS, PXRD, SEM, EPR, XPS, FTIR and thermal properties were analysed using TGA. Doping was found to reduce the bandgap of (BA) 2 PbCl 4 from 3.5 eV to 2.3 eV. The doped compound exhibited good thermal and moisture stability and has an optimal bandgap which makes them good candidates for photovoltaic applications.