Abstract
Phenothiazine and thioindigo were used as substitutes to make new Ru dyes for DSSCs. The thioindigo unit is a notable molecule with strong technical qualities in these photosensitizers. As a result, research was done on the cyano substituent as an electron-donating group. Both theoretical and experimental methods were used to assess the complexes’ optical response. A better photovoltaic response is achieved by the cyano groups’ efficient bonding with the semiconductor layer. Additionally, the complexes that were formed contain two different kinds of electron accepter substituents: cyanoacrylic acid and carboxylic acid, with efficiencies of 7.42% and 4.17%, respectively. Additionally, cosensitization was investigated and analyzed utilizing N719 and two generated complexes. DSSCs made with Complex 1 and 2 and N719 have corresponding efficiency percentages of 8.86% and 9.74%.
