Figure1 (IMAGE) Osaka University Caption (a) AFM image of a high quality ZnO thin film (b) Double component excitons in ZnO (c) Schematics of the twin antennas arising from nearly degenerated excitons and their cooperative emission (d) Experimentally established fast radiative decay of just under 20 femtoseconds. Credit Osaka University Usage Restrictions None 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.