Abstract

In this paper, CuInS₂ (CIS) nanoparticles were synthesized successfully via a new copper precursor [bis(acetylacetonato)copper(II)], [Cu(acac)₂]; at room temperature by ultrasonic method. The effect of sulfur source, solvent, and reaction time was investigated on product morphology and particle size. A series of analyses was performed to characterize the CuInS₂ microsphere including X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence (PL) spectroscopy. CuInS₂ nanoparticles were prepared and coated on FTO. Later, the coated FTO was sintered so that a compact and dense CuInS₂ film was produced and measured for photovoltaic characteristics such as V_oc, J_sc and FF.

Keywords: CuInS2, semiconductors, solar cells, ultrasonic.