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

Author(s): Wasan R.Saleh, OmarA.Ali

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 Aratmosphere 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.

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