eng Science and Education Publishing World Journal of Chemical Education 2375-1657 2018-01-27 6 1 36 42 10.12691/wjce-6-1-7 WJCE2018617 article Claudia Bohrmann-Linde claudia.bohrmann-linde@uni-tuebingen.de 1 Diana Zeller 1 Department of Chemistry Education, University of Tübingen, Auf der Morgenstelle 18, 72076 Tübingen, Germany Alternative solar cells on the basis of titanium dioxide are subject of intense research. For the integration of this topic into the chemistry curriculum a set of experiments with photogalvanic cells has been developed. Titania phototelectrodes need to be irradiated with UV light, but the spectrum of solar light contains only little UV radiation. Thus photosensitizers are needed that harvest visible light. Here we present a series of experiments with different dye solutions that can serve as an alternative to the priorly used anthocyanins in the chemistry classroom. The dyes presented are more stable and also work as sensitizers in titania-based photogalvanic cells. http://pubs.sciepub.com/wjce/6/1/7/wjce-6-1-7.pdf titanium dioxide titania photogalvanic cells photosensitization light natural dyes semiconductor solar cells hands-on chemistry-lab sustainable development education