Organic Photovoltaic Polymer (image) University of Washington Share Print E-Mail Caption A vial holds a solution that contains the UW-developed polymer "ink" that can be printed to make the solar cells. Credit Yeechi Chen/University of Washington Usage Restrictions News use only. 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.