| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 6535163 | Solar Energy Materials and Solar Cells | 2015 | 6 Pages |
Abstract
Dye sensitized solar cells (DSSCs) based on TiO2/MWCNTs composite with varying concentrations of CNTs (0, 0.03. 0.06, 0.09, 0.15, and 0.21Â wt%), fabricated using N3 dye as a sensitizer. Transmission electron microscopy was used to confirm the dispersion of carbon nanotubes in TiO2. UV-visible absorption spectroscopy, photocurrent-voltage characteristics, and electrochemical impedance spectroscopic measurements were conducted to characterize the DSSCs. The results show that the photo conversion efficiency is highly dependent on the concentration of CNTs in the photoanode. A solar cell based on a photoanode containing 0.03Â wt% MWCNTs has a power conversion efficiency which is about 30% greater than that of the unmodified photoanode. A quantum modeling technique based on the density functional theory was used to investigate the thermodynamic aspects of the charge transport processes in DSSCs. Simulation results support the experimental data.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Umer Mehmood, Ibnelwaleed A. Hussein, Khalil Harrabi, M.B. Mekki, Shakeel Ahmed, Nouar Tabet,