FABRICATION AND CHARACTERIZATION OF DYE SENSITIZED SOLAR CELL USING NATURAL DYE FROM ROSELLE PLANT

AUTHOR: OKOLI, LAETICIA UDODIRI 

DEPARTMENT: PHYSICS AND INDUSTRIAL PHYSICS

AFFILIATION: NNAMDI AZIKIWE UNIVERSITY, AWKA

Dye-sensitized solar cell has been successfully fabricated on transparent Fluorine-doped Tin Oxide (FTO) coated glass substrates with sheet resistance of 14.42 Ω/□ using Blade method. The cell was fabricated using an equal mixture of activated carbon and graphite as the counter electrode, a nanocrystaline Titanium (IV) Oxide (TiO2) as the photoelectrode, iodine electrolyte and a natural dye – anthocyanin dye extracted from roselle plant (zobo plant). An undyed cell was also fabricated using the same materials and deposition method. The thickness of the counter electrode and photoelectrode films were 4.2μm and 6.2μm respectively. The electric energy conversion efficiency of the dyed cell was found to be 0.6% in good agreement with the measurements of 0.193 to 11%. That of the undyed cell was 0.003%. The small efficiency of the undyed cell could be attributed to the fact that the wide band gap semiconductor TiO2 can only absorb fractions of light compared with the dyed cell. Hence the efficiency of the dyed cell is 200times the efficiency of the undyed cell.

TO VIEW THE FULL CONTENT OF THIS DOCUMENT, PLEASE VISIT THE UNIZIK LIBRARY WEBSITE USING THIS LINK, http://naulibrary.org/dglibrary/admin/book_directory/Thesis/10384.pdf

Advertisements

Tags: , , , , , , , , , , , , , , , , , , , , ,

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s


%d bloggers like this: