Designing blue organic LEDs from scratch
free of metals has been developed by researchers in Japan. The team also believes the design principles they used will allow other researchers to produce new, high-efficiency LED materials. For the production of a multi-colour or white LED, emission of blue light is crucial – the 2014 physics Nobel prize was awarded for the development of blue gallium nitride LEDs. Organic LEDs (OLEDs) have multiple advantages over inorganic LEDs for flat panel displays and mobile phones as they are ultrathin, lightweight and flexible.