Natural dye-sensitized solar cells containing anthocyanin dyes extracted from frozen blueberry using column chromatography method

A Dye-sensitized solar cells were fabricated using anthocyanin dyes extracted from frozen blueberry using the column chromatography method. To determine the best anthocyanin extraction protocol, we tested different kinds of developing solvents by changing the ratio of methanol, acetic acid, or HCL, and pure water. In addition, we used three kinds of frozen blueberries: soaked in acetic acid for 24 hours, only soaking the skin in acetic acid for 24 hours, and without soaking in acetic acid. The best developing solvent was a ratio of 9:2:9 with blueberry that was not soaked in acetic acid, resulting in a PCE over 0.8%.