Abstract
Three triarylamine organic dyes ( XS28–30) containing a cyclopentadithiophene unit as the conjugated bridge have been designed and synthesized for a potential application in dye-sensitized solar cells (DSSCs). Their absorption spectra, electrochemical and photovoltaic properties have been investigated. The incorporation of ethyl-substituted cyclopentadithiophene is highly beneficial to light-harvesting and preventing close π–π aggregation, thus favorably generating high efficiency. For a typical device, a solar energy conversion efficiency ( η) of 5.8% based on XS29 was achieved under simulated AM 1.5 solar irradiation (100 mW cm −2) with a short-circuit photocurrent density ( J SC) of 14.4 mA cm −2, an open-circuit voltage ( V OC) of 601 mV, and a fill factor (ff) of 0.68. These results suggest that the functionalized cyclopentadithiophene unit is a promising candidate for DSSCs.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call