Schematic of UC (IMAGE) National Institutes of Natural Sciences Caption Fig. 1 (a) Schematic illustrations of the conventional UC mechanism in films, and chemical structure of conventional sensitizer. (b) Schematic illustrations of the novel UC mechanism at the organic semiconductor interface. (c) Chemical structures of sensitizer and emitter of the novel UC systems. Credit NINS/IMS Usage Restrictions None 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.