Organic dyestuff based on di-triphenylamine serving as electron donor as well as preparation method and application of organic dyestuff

The invention relates to the technical field of organic dyestuffs and discloses an organic dyestuff based on di-triphenylamine serving as an electron donor as well as a preparation method and application of the organic dyestuff. According to the organic dyestuff, the di-triphenylamine serves as an electron donor unit, cyano-acrylate serves as an electron acceptor, tetrathiophenopyrrole serves as aconjugate link, and the chemical structural formula is shown in the description. According to the twisted three-dimensional stereo-chemical configuration of the di-triphenylamine donating group, self-aggregation of the dyestuff can be effectively avoided, interfacial electron recombination can be inhibited, the donating ability is high, and the photoelectric property of the dyestuff is further improved; a dye-sensitized solar cell is prepared by taking the dyestuff as a sensitizer, the open-circuit voltage Voc of the device is 779 mV, the short-circuit photocurrent density Jsc is 13.2 mA/cm , the fill factor (FF) is