Researchers from Tokyo University of Science reported an achievement of developing transparent films that can tune the emitting color. This innovation of color tunable transparent films may provide a wide range of application potential for LED displays and illumination. Published in The Royal Society of Chemistry's Materials Advances, the research team described the mechanism it has developed to tune the photoemission of a solid polymeric film. The method is to control the flow of protons in it by applying a voltage. The study provided insights into the creation of mo...