Abstract
Two hemicyanine (aminostilbazium) dyes, one bearing two carboxylic groups while the other being its ester analogue, were synthesized for use as photosensitizers in dye-sensitized photoelectrochemical cells (DSPEC). Only the dye with carboxylic groups is covalently attached on mesoporous TiO2 films. The ester analogue, however, is physically adsorbed and it is easily washed off by several solvents. DSPECs of the Graetzel type, made of mesoporous TiO2 films (in our case, synthesized through the reverse-micellar route), of the aminostilbazium bicarboxylate photosensitizer and of a I-/I3-/propylenecarbonate electrolyte were tested and were found to yield more than 45% maximum photon to electron conversion efficiency and 0.72% overall photovoltaic efficiency. The cells yielded a linear response within a wide range of illumination intensities.
Sign-in/Register to access full text options 
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
