Structure & J-V (image) National Institutes of Natural Sciences Share Print E-Mail Caption Fig. 1 (a) Chemical structure of tetrasubstituted PDI. (b) J-V curves of OSCs with tetrasubstituted PDI and reference compound. Credit NINS/IMS Usage Restrictions None Share Print E-Mail 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.