Figure 1 (IMAGE) Science China Press Caption (a) The conformation of PTVT-T can be stabilized by introducing symmetrical ester groups; (b) the aggregation effect of PTVT-T in solution and the surface morphology of its solid film; (c) the strong ??? aggregation structure of PTVT-T; (d) the development curve of photovoltaic efficiencies realized by PTV materials. Credit @Science China Press Usage Restrictions Use with credits 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.