Figure 7. Light microscope images (1,000x) of titania surfaces, sensitized with a) raspberry juice, b) saffron solution, and c) with crocin solution (Keyence VHD-1000X)

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