Theoretical Study on the Photoelectric Properties of a Class of Copolymers Based on Benzodithiophene for Solar Cells

Figure 4

(a) Experimental absorption spectra of PBDTTBT as a film and in chloroform solution [23] and simulated absorption spectra of PBDTTBT monomer (the smaller one) in chloroform solution. (b) Absorption spectra of monomers of the four designed copolymers in chloroform solution.

(a)

(b)