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Sparse CuInS2 (CIS) microspheres were grown on CIS seed layer by a wet-chemical approach in which the nuclei layer was prepared by the chemical spray pyrolysis technique. Both layers have been found to be polycrystalline in nature and possess body centered tetragonal crystal structure. SEM and AFM analyses reveal that the CIS seed layer consists of high dense nanoparticles with the thickness of 0.97μm and the average diameter of the as -grown microspheres is 2.1 μm. The results demonstrated that CIS microspheres exhibited good electrical properties and might have potential applications in photovoltaic technology. [ABSTRACT FROM AUTHOR]