| abstract |
The invention discloses a benzodithiophene and pyrazine copolymer, a preparation method and an application, and the structural formula is as follows: Wherein R is an alkyl group, and the copolymer of the present invention is an electron donor material, which is applied to polymer solar cells and has wide absorption in the visible light region, low HOMO energy level, relatively narrow band gap, and high photoelectricity. conversion efficiency. |