CdSe Quantum Dots for Solar Cell Devices. (17th April 2012)

• Record Type: Journal Article
• Authors: Kashyout, A. B.; Soliman, Hesham M. A.; Fathy, Marwa; Gomaa, E. A.; Zidan, Ali A.
• Other Names: Abdel-Mottaleb Mohamed Sabry Academic Editor.
• Is Part Of: International journal of photoenergy. Volume 2012(2012)
• Publication Date: 2012-04-17
• Subjects: Photochemistry -- Periodicals; Photobiology -- Periodicals; Chemistry, Physical and theoretical -- Periodicals; Photochimie; Photobiologie; Chimie physique et théorique; Chemistry, Physical and theoretical; Photobiology; Photochemistry; Electronic journals; Periodicals; 541.35
• DOI: 10.1155/2012/952610
• Languages: English
• ISSNs: 1110-662X

Abstract

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/cm 2 has been obtained. CdSe/TiO2 solar cells without and with using mercaptopropionic acid (MPA) as a linker between CdSe and TiO2 particles despite a V oc of 428 mV, J sc of 0.184 mAcm -2, FF of 0.57, and η of 0.05% but with linker despite a V oc of 543 mV, J sc of 0.318 mAcm -2, FF of 0.48, and η of 0.08%, respectively.