Diyala Journal for Pure Science
Scientific Refereed Journal Published By College of Science - University of Diyala
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Diyala Journal for Pure Science DJPS
P- ISSN:2222-8373, E-ISSN:2518-9255
Volume 13, Issue 3, Part 2 , July. 2017
Fabrication Dye Sensitized Solar Cells by Using Natural Dye Beet Root (Beta Vulgaris) as Photosensitizer and Nano Electrodes
Amir .F .Dawood AL-Niaimi, AbdulKareem .M.Ali.ALsamarai , Zianab. I.Sadq
Year: 2017, Volume: 13, Issue: 3, Part: 2
Pages: 179-197, DOI: http://dx.doi.org/10.24237/djps.1303.303C
In this study different types of Dye Sensitized Solar Cells (DSSCs) were fabricated using two kinds of titania (TiO2) semiconductors as photo anodes and four kinds of counter electrodes, sensitized natural dye Beta vulgaris (beetroot) dye (Betalin). And the electrolyte (I-/I3-). TiO2 semiconductors includes; Nano sized powder (deposited on Indium doped Tin oxide (ITO) glass) and anodized nanotubes template on titanium foil. The counter electrodes include; platinum, electropolymerized polyaniline (PANI), polythiophene (PTh) and polypyrrole (PPY) (also all deposited on ITO glass). The surface structure of prepared photo anodes and counter electrodes were analysis by AFM, SEM,XRD and FTIR. The absorption spectra of natural dye was investigated by UV-Visible spectroscopy which showed absorbed light at 479 nm and 536 nm. The efficiency of prepared DSSCs were estimated through I-V characterization, the fall factors (ff) and electrical conversion efficiencies (ղ %) were measured using potentiostat. The efficiencies of all DSSCs follow the order ;
ITO/Pt – Ti/TNTs > ITO/Pt – ITO/TiO2 > ITO/PANI – Ti/TNTs > ITO/PPY – Ti/TNTs > ITO/PTh – Ti/TNTs > ITO/PTh – ITO/TiO2 > ITO/PANI – ITO/TiO2 > ITO/PPY – ITO/TiO2.
The best efficiencies were achieved using Ti/ TNTs and ITO/TiO2 as anode and ITO / Pt as cathode they were 1.38% and 0.56% respectively.
Key words : Dyes sensitized solar cells, titanium nanotubes. Nano polyaniline, Nano polypyrrole, Nano polythiophene, natural dyes.