Yes that’s right.. 230%. This new type of LED emits more light energy than the corresponding electrical energy it consumes.
Magic?
No…. Endothermic. As researchers drove the input voltages lower and lower they discovered the new design of LED gets colder and colder and starts to absorb heat energy from its surroundings. From 30 picowatts of electrical power the new design is able to emit 69 picowatts of light.
Whether this can be scaled up for general usage remains to be seen, however its an exciting development that will have many applications in low power electronics, for example ultra low power computer displays.