Preparation CuInSe2 (CIS) by arrested precipitation method as alight absorption layer of photovoltaic solar-cells

摘要

The CuInSe2 (CIS) nanocrystals are synthesized by arrested precipitation from molecular precursors are added to a hot solvent with organic capping ligands to control nanocrystal formation and growth.CIS thin films deposited onto glass substrate by spray — coating, then selenized in Ar-atmosphere to form CIS thin films.PVs were made with power conversion efficiencies of 0.631% as —deposited and 0.846% after selenization, for Mo coated, under AM 1.5 illumination. X-ray diffraction (XRD) and energy dispersive spectroscopy (EDS) analysis it is evident that CIS have the chalcopyrite structure as the major phase with a preferred orientation along (112) direction and the atomic ratio of Cu: In: Se in the nanocrystals is nearly 1:1:2.