摘要： Photovoltaic energy presents environmental advantages; however, these advantages are limited by the cost of manufacturing solar cells and in many cases, scarce or dangerous materials are incorporated. Therefore, the use of natural dyes from morti?o (Vaccinium ?oribundum) as sensitizers in solar cells is proposed. The dyes were extracted by maceration in acidi?ed methanol (HCl, citric acid and tri?uoroacetic acid TFA) and were characterized by High-Performance Liquid Chromatography (HPLC), Thin-Layer Chromatography (TLC) and spectrometric methods (UV-Vis, IR and MS-MALDI). The construction and characterization of cells were in standard conditions. The study con?rms that pigments in morti?o are ?avonoids of the anthocyanidin group as: cyanidin-3-galactoside, and cyanidin-3-arabinoside. The e?ciency of solar cells was between 0.18–0.26%; the extraction with TFA in methanol leads to the best performance. Although they have low power conversion e?ciency, morti?o dyes could be an alternative to arti?cial sensitizers for solar cell technologies because they are harmless and abundant substances.