Alkali metals doped Cu_(0.95)X_(0.05)O (X = Li, Na and K) nanoparticles: Facile synthesis, structural, optical properties and solar cell application

摘要

The present work deals with the synthesis of alkali metals doped Cu0.95X0.05O (where X = Li, Na, and K) nanoparticles and their utilization as an additional donor material in organic solar cells. The effective substitution of X+ into CuO lattice is analyzed by physical characterizations i.e. Transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV-vis spectroscopy. The power conversion efficiency (PCE) in the case of Cu0.95Li0.05O (3.19%), Cu0.95Na0.05O (3.84%), and Cu0.95K0.05O (3.46%) is appreciable than pristine CuO nanoparticles similar to 3.0% with 9.22 mA/cm(2) current density and 55% fill factor. The PCE's are corroborating with structural and optical analysis. With the achievement of PCE of 3.84%, the present work is worth significant for solar cell devices and can be served as a donor material in other optoelectronic applications. (C) 2020 Elsevier B.V. All rights reserved.