Forsythia Flower as Natural Photosensitizer for Dye-sensitized Solar Cells

摘要

Pigments of Forsythia flowers were facilely extracted. Ultraviolet-visible (UV-Vis) absorption spectra of nanocrystal TiO_2 film sensitized by Forsythia dyes, and photoelectric property of natural dye-sensitized solar cells (DSSCs) confirmed that the strong capacity of Forsythia visible light absorption, and the short-circuit current density and the photoelectric conversion efficiency of forsythia DSSC is 2.07mA/cm~2 and 0.79%, respectively, attributed by energy level well matching of forsythia dyes excited states with the TiO_2 conduction band energy level.