Abstract: Disclosed are a small-molecule electron donor material with an electron-deficient heterocyclic core, preparation and application thereof, belonging to technical field of solar cells. According to the present application, a brand-new electron-deficient heterocyclic unit which has never been applied to an organic solar cell is used as a core unit to prepare a small-molecule electron donor material with an A-D-A?-D-A skeleton structure, and the molecular structure of the small-molecule electron donor material is shown in formula (I).

Abstract: Disclosed is a double-capped micromolecule electron donor material, its preparation and application. The micromolecule electron donor material comprises a molecular structure as shown in formula (I). The double-capped micromolecule electron donor material of the application has good solubility, stability, photoelectric property and solution processability, and may be used as an electron donor material for all-micromolecule organic solar cells.

Abstract: Disclosed are a small-molecule electron donor material with an electron-deficient heterocyclic core, preparation and application thereof, belonging to technical field of solar cells. According to the present application, a brand-new electron-deficient heterocyclic unit which has never been applied to an organic solar cell is used as a core unit to prepare a small-molecule electron donor material with an A-D-A?-D-A skeleton structure, and the molecular structure of the small-molecule electron donor material is shown in formula (I).

Abstract: Disclosed are a ternary polymer donor material, a preparation method and application thereof. The ternary polymer donor material is prepared by Still cross-coupling reaction of chlorinated thiophene (BDT-2Cl), fluorinated thiophene (BDT-2F) and brominated thiophene (BDT-2Br). Terpolymer synthesized in the application is a ternary polymeric donor material based on synergistic effect of fluorine (F) and chlorine (Cl), molecular energy levels of the ternary polymeric donor material are effectively adjusted by controlling contents of the BDT-2Cl, thereby showing graded voltage change, and a balance between driving force and energy loss is achieved through the synergistic effect of the F and the Cl.

Abstract: Disclosed is a fluorine-substituted Pi(?)bridge selenide polymer acceptor material, its preparation and application. The selenide polymer acceptor material is named PYSe2FT and is synthesized by Knoevenagel condensation reaction and Still cross-coupling reaction; the material PYSe2FT takes a selenium-substituted core donor unit as a main structure, and combines a difluoro-substituted thiophene ?-electronic connection unit, where the selenium-substituted core donor unit and the difluoro-substituted thiophene ?-electronic connection unit can effectively regulate and control the molecular energy level, so that molecules generate good accumulation, thus making PYSe-2FT an excellent polymer acceptor material.