•  
  •  
 

Article Type

Research Paper

Corresponding Author

Amr A. Sayed Alahl

Abstract

This study delves into the consequences of introducing diverse donor group substitutions into the molecular framework of 1,3,4-thiadiazole, with the primary objective of augmenting optical and electronic attributes to improve the effectiveness of sensitizer dye for solar cells (DSSCs). The current investigation centers on the examination of novel azo disperse dyes generated through the diazotization of bis(2-amino-1,3,4-thiadiazolyl) attached with benzene in para position followed by coupling with various amines (approximately 3 distinct dyes). The primary focus is on the influence of these donor group substituents on the optimization of optical and electronic properties for DSSC applications. These newly devised dyes incorporate 1,3,4-thiadiazole as an electron acceptor. This research examines how the dye compositions, molecular structure, photophysical and electrochemical properties, and the fabrication process of DSSCs affect each other. All the molecular structures have higher oxidation potentials in the ground state than I−/I−3 and lower oxidation potentials in the excited state than the semiconductor’s conduction band edge. The best performance among the DSSCs is achieved with dye 16, which has a fill factor (FF) of 55.6, a open-circuit voltage (VOC) of 449.4 mV, a short-circuit current density (JSC) of 1.845 mA/cm², a maximum power output (Pmax) of 0.04149 mW, and the highest efficiency (η) at 0.46%.

Keywords

Photovoltaic performance; DFT; thiadiazole; DSSCs fabrication; electrochemical Properties

Download

Share

COinS