LAUSR

In this paper, the core cell CdSe/ZnO nanoparticles were synthesized by novel aqueous solution route. The as prepared samples were annealed at 450 °C for 30 min in ambient atmosphere to improve the structural perfection. A considerable blue shift and increase in the band gap was observed with the increase of Se content and quantum confinement effect. The TEM image reveals that the obtained CdSe/ZnO core shell nanomaterials are ranging from 20 to 50 nm in diameter. The prepared core shell nanomaterials are coated on the surface of mesoporous TiO2 layer deposited on FTO substrate using Dr. Blade method. The platinum electrodes are used as counter electrodes and iodine I3 as electrolyte and N3 as Dye. The photovoltaic characteristics, electrochemical impendence spectra for the DSSCs are investigated in terms of open circuit voltage, short circuit current, fill factors, solar cells efficiency and electron life time.