الفهرس 
INTRODUCTION AND AIM OF THE WORKOnly 14 pages are availabe for public view
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Abstract
CdSe quantum dots have been prepared with different sizes and exploited as inorganic dye to sensitize a wide band gap TiO2 thin films for QDs solar cells. The synthesis is based on the pyrolysis of organometallic reagents by injection into a hot coordinating solvent. This provides temporally discrete nucleation and permits controlled growth of macroscopic quantities of nanocrystallites. XRD, HRTEM, UV-Visible and P L were used to characterize the synthesized quantum dots. The results showed CdSe quantum dots with sizes ranging from 3 nm to 6 nm which enabled the control of the optical properties and consequently the solar cell performance. Solar cell of 0.08% efficiency under solar irradiation with a light intensity of 100 mW/ cm2 has been obtained. CdSe/TiO2 solar cells without and with using PMA as a linker between CdSe and TiO2 particles despite a Voc of 428 mV, Jsc of 0.184mAcm-2, FF of 0.57 and η of 0.05% and a Voc of 543 mV, Jsc of 0.318 mAcm-2 , FF of 0.48 and η of 0.08% respectively.