Phenoxazine dyes in solid-state dye-sensitized solar cells
Several structural modifications have been made to a sensitizer dye based on the phenoxazine core, which was tested in a solid-state dye-sensitized solar cell configuration based on the hole transporting material 2,2',7,7',-tetrakis(N,N-di-p-methoxyphenyl-amine)-9,9',-spirofluorene. Light-to-power conversion efficiencies between 2.5% and 4.1% are reported. The difference in device performance is significantly related to the variations of dye mol. structure, with dye mols. having surface protecting alkoxy-groups yielding better solar cell devices. The phenoxazine dyes were characterized by their light harvesting capabilities and electronic properties such as electron recombination lifetime and chem. dipole moment.
Record created on 2015-07-06, modified on 2016-09-28