Dye-sensitized solar cells (DSSC) are a possible alternative to traditional solar energy technologies. Metal-free organic dyes such as porphyrins seem to be an especially promising option as a sensitizer due to their characteristic Soret band and smaller Q-bands in the visible spectrum. Protoporphyrin IX (PPIX) is a naturally occurring porphyrin found in sources hemoglobin, chlorophyll, and brown egg shells. PPIX exhibits typical porphyrin absorbance spectrum, and the carboxylic acid substituents make it ideal for direct attachment to the TiO2 of the DSSC. The purpose of this research is to extract PPIX at a high enough concentration from brown eggshells that it could be purified using a liquid chromatography fraction collector and used as a sensitizer in a DSSC.
Overway, Ken and Studtmann, Carleigh, "Extraction of Protoporphyrin IX for Use in Dye-Sensitized Solar Cells" (2017). Chemistry Faculty Scholarship. 8.