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Chemical bath deposition was improved by using glycerol, a very conventional surfactant, to control cadmium sulfide CdS in various sizes and structures, under ultrasonic irradiation conditions. Consequently, an effective route to prepare CdS thin film that consists of either CdS fibrils with an average diameter of 52 nm or monodispersed CdS grains 35 to 80 nm in size is proposed. X-ray diffraction (XRD) studies revealed that, in the crystallographic properties of the obtained CdS films, CdS may exist in two crystalline modifications—a hexagonal and a cubic phase—that are characterized by several diffraction peaks positioned at 2θ≈23.4°, 27.1° and 47.8°. Beside this, UV-Vis studies also revealed the positive effect of glycerol at grain boundaries, leading to detrimental reduction of the band bending towards the absorber surface and increasing the population of optical absorptions.

In this paper, we study on the effects of ZnO nanorods /seed ZnO on properties of hybrid solar cells. ZnO nanorods fabricated by electrochemical method of two-step stable flow of liquid Zn(NO3)2. 6H2O (0.005 M) and C6H12N4 (0.005 M). Morphology and optoelectronic properties of ZnO nanorods were studied by SEM images, UV-VIS transmission spectra, X-ray diffraction and photoluminescence spectrum. Elaboration of hybrid solar cells by inserting ZnO nanorods on organic photoactive layer of P3HT:PCBM and ITO, as result the solar cell conductivity performance is significantly improved. Experimental results show that ~ 1,392 mA/cm2 Jsc, Voc ~ 0.49 V, FF = 0.32, and PCE = 0.23%.