cadmium sulfide The structural, morphological, and optical properties studied using powder X-ray diffraction (PXRD), scanning electron microscope (SEM) and UV-Vis NIR analysis respectively. From the observed PXRD pattern, the particle size calculated using Debye Scherer’s method. The cell parameters well agreed withstandard JCPDS data. Using CdS QDs, quantum dot sensitized solar cells (QDSSC) fabricated on FTO substrates.Sol-gel method synthesized TiO2 nanoparticles, CdSquantum dots, I3-I-electrolytes and Pt as counterelectrode were used for cell abrications.