Speaker
Mr
Tshifhiwa Steven Ranwaha
(University of Venda)
Description
Dye‐sensitized solar cells (DSSCs) have attracted considerable attention in recent years as they offer the possibility of low‐cost conversion of photovoltaic energy. DSSCs use the dye molecules adsorbed on the TiO2 semiconductor in nano architecture with the role of absorbing photon from the sun. The electronic structure and excitation properties of dye sensitizer determine the efficiency of the DSSCs. The dye molecule is sensitizer that absorbs the photon from the sun and inject an excited electron on the TiO2 semiconductor. The study focuses on the understanding of different properties (electronic optical properties) of NIR-dye molecules employing density functional theory (DFT) calculations. The calculations are based on the determinations of Absorption spectrum, UV-Vis spectrum and Light Harvesting Efficiency of the dye molecules. The results obtained shows that NIR-dye molecules can improve the efficiency of DSSCs as there is a shift of absorption to the near infrared, which increase the absorption range from visible on the solar spectrum.
Keywords: Dye Sensitized Solar Cells, Dye,Efficiency
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Dr NE maluta
university of venda
eric.maluta@univen.ac.za
| Consideration for<br>student awards<br><b>Choose one option<br>from those below.</b><br>N/A<br>Hons<br>MSc<br>PhD | MSc |
|---|---|
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Primary author
Mr
Tshifhiwa Steven Ranwaha
(University of Venda)
Co-authors
Dr
Nnditshedzeni Eric Maluta
(University of Venda)
Dr
Rapela Maphanga
(CSIR)
Mrs
ife fortunate Elegbeleye
(University of venda)
Peer reviewing
Paper
Paper files:
