Two new organic sensitizers for dye solar cells containing a sterically hindered moiety have been synthesized. The introduction of a 3,4-dibutyl-thiophene ring into D-pi-A dyes reduces the sensitizer aggregation and allows the preparation of solar cells with PCE of 7.17% and 6.27% without the use of coadsorbant agents.
Metal-free organic sensitizers with a sterically hindered thiophene unit for efficient dye-sensitized solar cells
CONCINA, Isabella;BRAGA, ANTONIO;BORGESE, Laura;DEPERO, Laura Eleonora;VOMIERO, Alberto;SBERVEGLIERI, Giorgio;
2011-01-01
Abstract
Two new organic sensitizers for dye solar cells containing a sterically hindered moiety have been synthesized. The introduction of a 3,4-dibutyl-thiophene ring into D-pi-A dyes reduces the sensitizer aggregation and allows the preparation of solar cells with PCE of 7.17% and 6.27% without the use of coadsorbant agents.File in questo prodotto:
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