Figure 1 (IMAGE) Science China Press Caption The J-V characteristics for OSCs based on P2F-EHp:BTPT-4F and P2F-EHp:BTPTT-4F; the chemical structures of active layer components. Credit ©Science China Press Usage Restrictions Use with credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.