Three new triarylamine-free sensitizers for DSSCs containing a tert-butyldiphenyl-4H-pyranylidene as the donor unit are reported. Devices have been carefully optimized resulting in high Jsc values. An efficiency of 5.80% has been obtained for a sensitizer with a thiophene ring in the π spacer. Solvent, dipping time, thickness and photoanode structure have been optimized.
J. M. Andrés-Castán, S. Franco, B. Villacampa, J. Orduna and R. Pérez-Tejada, RSC Adv., 2015, 5, 106706 DOI: 10.1039/C5RA23339A
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