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Sensitization of copper oxide nanoparticles by Victoria Blue R for dye-sensitized solar cells: A DFT study | ||
| Advances in Nanochemistry | ||
| مقاله 3، دوره 1، شماره 1، فروردین 2019، صفحه 12-16 اصل مقاله (2.15 M) | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22126/anc.2019.3402.1007 | ||
| نویسندگان | ||
| Farimah Mousavi* ؛ Avat Arman Taherpour* | ||
| Faculty of Chemistry, Razi University, Kermanshah, 67149-67346, Iran | ||
| چکیده | ||
| The model structures of the copper oxide (CuO) nanoparticles and the Victoria blue R (VBR) dye were drawn and optimized using density functional theory (DFT) methods. The orbital energy diagrams of CuO, VBR, and the VBR-sensitized CuO were calculated by means of DFT/B3LYP/6-31G* method. The study revealed the energy of the highest occupied molecular orbital (EHOMO), the lowest unoccupied molecular orbital (ELUMO), and the band gap (ΔEHOMO-LUMO) of the VBR molecule as -3.85, -2.77, and 1.08 eV, respectively. Same calculations on the model structure of CuO nanoparticles represented the band gap of 2.78 eV, which was decreased into 0.80 eV for the VBR-sensitized CuO. The ultraviolet-visible (UV-Vis), infrared (IR), and nuclear magnetic resonance (NMR) spectrums, as well as the effect of solvation on the molecular orbitals of the VBR molecule, were also calculated. The UV-Visible spectra of the dye display two broad absorption peaks in the visible region. In addition, the electrostatic potential and the local ionization potential maps of the modeled VBR-sensitized CuO photoanode were illustrated and discussed. This study successfully describes the potential of VBR-sensitized CuO to be used as a photoanode in dye-sensitized solar cells (DSCs). | ||
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