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International Journal of Photoenergy
Volume 2012 (2012), Article ID 952610, 7 pages
http://dx.doi.org/10.1155/2012/952610
Research Article

CdSe Quantum Dots for Solar Cell Devices

1Advanced Technology and New Materials Research Institute, City of Scientific Research and Technological Applications, New Borg El-Arab City, Alexandria 21934, Egypt
2Department of Chemistry, Faculty of Science, Mansoura University, Mansoura 35516, Egypt

Received 6 January 2012; Accepted 6 February 2012

Academic Editor: Mohamed Sabry Abdel-Mottaleb

Copyright © 2012 A. B. Kashyout et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

CdSe quantum dots have been prepared with different sizes and exploited as inorganic dye to sensitize a wide bandgap 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 PL 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% performance under solar irradiation with a light intensity of 100 mW/cm2 has been obtained. CdSe/TiO2 solar cells without and with using mercaptopropionic acid (MPA) as a linker between CdSe and TiO2 particles despite a of 428 mV, of 0.184 mAcm−2, FF of 0.57, and of 0.05% but with linker despite a of 543 mV, of 0.318 mAcm−2 , FF of 0.48, and of 0.08%, respectively.