MIT expert let LED luminous efficiency reached 230%

Light energy more often than it sends light bulb consumes much more because in the bulb electrical energy into light energy loss when the Federation, such as parts into heat, but the Massachusetts Institute of Technology (MIT) a research team recently announced a they have developed a new type of LED device makes it a the light is far higher than the consumption of electricity.

The incandescent lamp is typical of low efficiency of energy conversion device, usually after the power is switched on, the heating filament, not only produces more energy and produce a lot of heat, even including the traditional energy-saving lamp LED will produce more or less part of the heat loss, and can not reach 100% of the energy conversion.

MIT expert LED luminous efficiency reached 230%

A research team at the Massachusetts Institute of Technology said in improving the environmental temperature significantly reduced if the input power can make LED get free energy is proportional to the input power and power according to the formula of the square of the voltage, and the output optical power and voltage is proportional to the applied voltage, so electrical input power in half, reduced to 1/4, due to a linear relationship the light output power and voltage, it will only be reduced by half, in other words, reduce the voltage, greatly reduce the output power decrease is far less than the input power, the efficiency of this LED significantly mentioned. When the applied voltage is extremely weak, the power is even more than 100%.

In the experiment, the researchers used electrical input power of 30 picowatts produced light output power of 69 picowatts, conversion rate as high as 230%. And most scholars will focus on how to make electric energy into light energy as much as possible on the different MIT scholars make full use of the device in the atomic lattice vibration caused by weak heat and entropy changes so that the output power is greater than the input power. The process can reduce the temperature of the LED, which is similar to that of a thermoelectric cooler, although it can not be completely reduced to room temperature, but it can be used to design a lamp that produces light without heat.