Emergence of the bitriplet exciton in crystalline pentacene. (IMAGE) Fritz Haber Institute of the Max Planck Society Caption Emergence of the bitriplet exciton in crystalline pentacene. Credit © TU Berlin Usage Restrictions © TU Berlin License Original 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.