| abstract |
The invention discloses a dibenzodithienopyrrole dye and its application in dye-sensitized solar cells. The dye based on dibenzodithienopyrrole of the present invention is a metal-free pure organic photosensitive dye, wherein, a triphenylamine group is used as an electron donor, and a large conjugated group of dibenzothienopyrrole is introduced into the π bridge , using cyanoacetic acid groups as electron acceptors and anchoring groups, and introducing branched alkyl chains on dibenzodithienopyrrole groups, effectively increasing the conjugation of dibenzodithienopyrrole dye molecules area, has a large steric hindrance, expands the spectral response and effectively broadens the absorption spectrum, improves the molar extinction coefficient, has good light-harvesting performance and good ability to inhibit electron recombination, and is used as a sensitizer in dye-sensitized solar cells In order to improve the photoelectric conversion efficiency of dye-sensitized solar cells. |