| abstract |
The invention discloses a novel ester-based thiazole type wide-bandgap polymer material, the structural formula of which is shown in formula I or formula II: In the formula, R 1 is a C 1 -C 20 alkyl group or a carbon atom on the alkyl group is substituted by a functional group in an oxygen atom and a sulfur atom; X is selected from H, Cl or F; R 2 is selected from different lengths The alkyl chain (C 1 -C 30 ) of ; Ar is selected from furan, thiophene, tinphene or dithiophene; n is 10-100. The polymer material of the present invention uses a BDT-based unit as an electron-donating unit (D), and a thiazole containing an ester group as an electron-deficient unit (A). Deep highest occupied empty orbital and good solubility, and the preparation cost involved is low; it can be used as electron donor material or electron transport layer material, and has good properties in the field of optoelectronic devices such as organic solar cells and perovskite solar cells. Commercial application prospects. |