In this study, extracted plumeria and celosia cristata flowers have been used as the sensitizer for dyesensitized
solar cells (DSSC). The cells were fabricated using TiO2 as a semiconductor layer
deposited on transparent Indium doped tin oxide (ITO) conductive glass using a spin coating
technique. The films with dyes were characterized by UV-VIS absorption spectra. The photovoltaic
properties of DSSC were studied under an incident irradiation of 100 mW/cm2
. The I-V characteristic
curves of all fabricated cells were measured and analysed. The energy conversion efficiency (η) of the
cells consisting of plumeria extract and celosia cristata extract was 3.73 × 10-6
and 1.18 × 10-7 respectively.