Improving of Safranin-O Characteristics as a Photosynthesis Through Adjusting pH Value in Dye-sensitized Solar Cells

Abstract

In this paper, Safranin-O as a viable photosensitizer in dye-sensitized solar cells (DSSCs) is introduced and its photosensitising properties respect to various concentrations and solvent is optimized. Moreover, the molecular structure of Safranin-O using density functional theory with the B3YLP method is computed in order to determine the Safranin-O energy bandgap in HOMO, LUMO and DOS. In the next level, the optimized Safranin-O dye is implemented as the photosensitizer within a DSSC and its functionalities investigated using the I-V curve as the figure of merit. In order to fully comprehend the absorption mechanisms within the solar cell structure, the full layer stack is simulated based on the finite element method (FEM) which shows that Safranin-O coated TiO 2 nanoparticles are capable of sustaining whispering gallery modes which further improves the optical absorption of the proposed structure.

Performance Evaluation of Natural Dye-Sensitized Solar Cells: A Comparison of Density Functional Theory and Experimental Data on Chlorophyll, Anthocyanin, and Cocktail Dyes as Sensitizers

“…Lowering the pH value of the dye can lead to an increase in the efficiency by a factor of 2 . The conversion efficiency of solar cells fabricated using red cabbage dye with a pH of 2.5 was 0.10 points larger than that of cells with a pH of 4.0 . By modifying the extraction methods of natural pigments, adjusting the mixing ratios of different pigments, increasing the dye concentration, exploring different pH values, improving electron transportation, and implementing varying fabrication methods, it is possible to achieve power conversion efficiencies of up to 12%. , The efficiency of DSSCs can be improved by modifying various factors such as different extraction methods and pigment composition.…”

Ionic Liquid‐Supported Vat Dye (Congo Red)‐Based Donor–Acceptor Type Conjugated Polymeric Material as Photosensitizer for Dye‐Sensitized Solar Cells

“…[24] Elmorsy et al presented a D-A type photosensitizer based on carbazole as a donor and thiazolidine-4-one as an acceptor and achieved an unexpected PCE of 9.55% (32% better than N719 dye sensitizer). [25] Previous research suggests the utilization of vat dyes such as Indigo, [26] Safranin O, [27] perylene 3,4,9,10-tetracarboxylic dianhydride, [28] and anthraquinone [29] dyes in the field of DSSCs, and substantial PCEs were achieved in several cases. Congo red has many applications in plastic, paper, textile, printing, rubber, dying industries, pH indicators, and as a histological to stain tissues for amyloid as well as in solar energy conversion and storage by photogalvanic cells.…”