Effects of Organic Solvents for Composite Active Layer of PCDTBT/PC₇₁BM on Characteristics of Organic Solar Cell Devices

Figure 5

Absorption spectra of active layer of PCDTBT : PC₇₁BM prepared by using organic solvents of chloroform, chlorobenzene, and o-dichlorobenzene with PCDTBT : PC₇₁BM ratios of (1 : 5), (1 : 4), and (1 : 4), respectively.