An experimental study on the efficiency of anthocyanin and chlorophyll extracts from Ananas comosus (pineapple) crown leaves, Muntingia calabura (aratiles) leaves, and Dioscorea alata (purple sweet potato) leaves as sensitizers of dye-sensitized solar cell/ Danica V. Camagong, Winzelle Jord O. Enriquez, Hannah Joy B. Escabal, Afna Marfe M. Labucay, Adriano Aldrin B. Lastrilla jr.

Thesis (undergraduate)

College of Engineering .-- Bachelor of Science in Electrical Engineering: Technological University of the Philippines, 2023.

Includes bibliography:

The study focused on the comparison of the efficiency of the dyes that
were used in the Dye-Sensitized Solar Cell. DSSCs primarily consist of ITO
coated conductive glass, dye, electrolytes, photo anode and counter electrode.
Natural dye is its main component for light absorption. This study utilized leaves
that have chlorophyll and anthocyanin and considered pigments from sample (a)
pineapple crown leaves, (b) Aratiles leaves and (c) purple potato leaves due to
its abundance in the Philippines. This research aims to maximize the advantage
of the DSSC on energy harvesting under direct sunlight and diffused light
conditions. The 5x5 panels were tested and showed that the sample a have the
highest terminal voltage ranging from 300-500 mV. While, those with dyes from
sample b have 100-220 mV and sample c have 120-300 mV. The researchers
then made a solar grid panel with 24 pieces arranged in 4 columns and 6 rows of
5x5 panels connected in series-parallel connection. The output voltage from
sample a’s solar grid panel reached 3.05 V while the sample b and c leaves had
3.7 and 6.6 mV, respectively. In conclusion, pineapple crown leaves, that came
from the waste materials, can be utilized to produce energy based on the
experimentation results. The researchers encourage the future researchers to
include low power load to measure the generated voltage of the DSSC.