fig2
![Non-fused ring acceptors for organic solar cells](https://image.oaes.cc/30f6d980-3b22-422f-9d4c-9b498e30db3f/4372.fig.2.jpg)
Figure 2. Chemical structures of representative non-fused ring acceptors with A-D-D'-D-A structure.
Figure 2. Chemical structures of representative non-fused ring acceptors with A-D-D'-D-A structure.
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