Dye extracted from Bael leaves as a photosensitizer in dye sensitized solar cell

Abstract

This study has explored a new plant source, Bael tree leaves, as an efficient dye extraction towards green energy harvesting through dye-sensitized solar cells (DSSCs). The photosensitizers, photo-absorption, bandgap, and ionic conductivity characteristics of the extracted dye were determined using thin-layer chromatography (TLC), ultraviolet-visible spectroscopy, Tauc plot, and conductivity meter, respectively. Chlorophyll is the main constituent in the extracted dye confirmed by TLC analysis. An optimum concentration (0.2 g ml−1) with ionic conductivity of 455 μS cm−1 of the dye was used as a photoactive layer in DSSC, demonstrating power densities of 1.345 μW m−2 and 8.078 μW m−2 under the illumination of the LED lamp (1555 lx) and tungsten bulb (1926 lx), respectively. Additional parameters, including fill factor (0.26), ideality factor (1.25), characteristic resistance (309 Ω), series resistance (313 Ω), and shunt resistance (662 Ω) of the fabricated DSSC under tungsten illumination reveal that the novel Bael tree leaves-based dye can harvest green energy efficiently through DSSCs.

Performance of dye-sensitized solar cells extracted dye from wood apple leaves

“…insignificant, as shown in figure 7. Earlier, a detailed discussion of the energy level diagram and electron transfer processes for wood apple leaves extract in DSSCs was reported [39].…”

Synthesis of Conjugated bis-Schiff Base and Their Complexes as Dye-Sensitizer for Dye Sensitized Solar Cell (DSSC) Application

“…As there is no equipment available to measure the exact wavelength of the light used, therefore the wavelength of the visible spectrum was used because illuminance only considers the spectrum of visible light. Given that the visible spectrum has the maximum peak at around 555 nm, as well as the peak of the eye-sensitivity curve particularly at 555 nm, the spectral irradiance of most indoor approximately around 550 nm (Alhorani et al, 2021). Therefore, for this wavelength, the corresponding value is 1.464 mW/m 2 , in which the conversion rule can be extracted as shown in Eq.…”

“…The DSSC fabrication procedure was done referring to method published by Phan et al, (2019) and Alhorani et al (2021) with some modifications. The details of the preparation method can be found in supplementary materials.…”

Optical absorption and photoluminescence properties of Cucurbita maxima dye adsorption on TiO2 nanoparticles

“…Five broad absorption bands were observed in the ranges of <400, 450-500, 521-551, 596-630, and 635-674 nm for all concentrations, with maximum peaks located at 333, 421, 462, 533, 613, and 662 nm, respectively, as shown in figures 2(a) and (b) respectively. A peak at approximately 333 nm represents the existence of C=O or C=C functional groups that are responsible for the n-π * electronic transition that can initiate electrical circuits in DSSCs and can facilitate their adsorption onto TiO 2 surfaces [17,18]. Two prominent absorption bands in the blue visible (450-500 nm) and red visible (635-674 nm) ranges have been observed in other related studies and are attributed to the presence of chlorophyll b and chlorophyll a [19,20].…”