Figure 4. Crocin-sensitized photoelectrodes a) before and b) after 15 minutes of irradiation with white light from a flashlight (X-Tactical); c) structure of crocin; the dye is mainly responsible for the yellow color of saffron from the saffron crocus d)

From

Photosensitizers for Photogalvanic Cells in the Chemistry Classroom

Claudia Bohrmann-Linde, Diana Zeller

World Journal of Chemical Education. 2018, 6(1), 36-42 doi:10.12691/wjce-6-1-7