Investigation of some common Fijian flower dyes as photosensi-tizers for dye sensitized solar cellsabstract

Abstract

Dye sensitized solar cells (DSSC) were fabricated using Allamanda cathartic, Bougainvillea spectabilis and Cosmos sulphureus dyes obtained from local Fijian flowers. The photoanodes were made from electro-phoretiaclly grown Titanium dioxide films coated with dyes. DSSCs with Cosmos sulphureus exhibited the best efficiency of 0.54% followed by Allamanda cathartic (0.40%) and Bougainvillea spectabilis (0.38%). The photoaction spectra of these cells were also studied.