TY - EJOU
AU - Escobar, Mario Alejandro Mejía
AU - Jaramillo, Frankin
TI - Natural Dyes Extraction, Stability and Application to Dye-Sensitized Solar Cells
T2 - Journal of Renewable Materials
PY - 2015
VL - 3
IS - 4
SN - 2164-6341
AB - In recent years, the development of new materials has contributed markedly to improving the efficiency of
dye-sensitized solar cells (DSSCs). Mesoporous semiconductors, solid electrolyte, non-conventional catalysts
and synthetic dyes without ruthenium have been the focus of study. With respect to the last, lanthanides and
porphyrins have presented good properties, but these elements have the same disadvantage as rutheniumbased dyes; being complicated to synthesize and very expensive. These limitations have stimulated much
research in the use of natural dyes as sensitizers due to their exceptional photoelectochemical properties and
low cost. Furthermore, they are regarded as renewable and environmentally friendly materials. For this reason,
the application of dyes extracted from annatto seeds (Bixa orellana), beetroot (beta vulgaris) and wild bilberry
(Vaccinium meridionale Swartz) peels was explored to fabricate DSSCs. The results show that fabricated solar cells
with an N3/annatto cocktail (1:0.10) could be comparable with a device made of 100% Ruthenium synthetic dye.
KW - Annatto
KW - anthocyanin
KW - beetroot
KW - DSSCs
KW - wild bilberry
DO - 10.7569/JRM.2014.634142