Journal
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
Volume 292, Issue -, Pages 1-9Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2014.07.003
Keywords
Organic-inorganic hybrid solar cells; Electronic properties; Fabrication; Efficiency; Density functional theory; Time dependent density functional theory
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Funding
- King Abdul Aziz city of Science and Technology (KACST) [GSP-12-24]
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The efficient organic dyes 2-{4-[2-(2-hydroxybenzylidene)hydrazino]phenyl}ethylene-1,1,2-tricarbonitrile and 2-{4-[2-(4-hydroxybenzylidene)hydrazinolphenyl}ethylene-1,1,2-tricarbonitrile have been synthesized, characterized and fabricated as hetero-junction solar cell materials. We use B3LYP/6-31G*, B3LYP/6-31G** and HF/6-31G** level of theories to optimize the ground state geometries. The absorption wavelengths have been computed by using time dependent density functional theory which is in good agreement with the experimental data. The hetero-junction solar cell devices have been fabricated by organic-inorganic heterojunction (dye/Si/TiO2) and measured the efficiency by applying the incident power 30, 50 and 70 mW/cm(2). The maximum efficiency 3.6% for dye2 has been observed. We shed light on the electronic and charge transport properties. Moreover, the stability and external quantum efficiencies have been measured. (C) 2014 Elsevier B.V. All rights reserved.
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