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

Figure 3

AFM images of the PCDTBT : PC₇₁BM films prepared by using organic solvents of chloroform (1 wt%), chlorobenzene (2 wt%), and o-dichlorobenzene (3 wt%): blend ratio of PCDTBT and PC₇₁BM was varied from 1 : 3 to 1 : 6.