With a new program to improve the rate of LED

According to physicists organization network reported recently, researchers at the Massachusetts institute of technology the United States through a socket transformation equipment make light emitting diode ( 领导) Than the consumption of the electric power release more light power, the power conversion efficiency can reach above 100%. Related research published in the latest issue of the journal physical review letters.

LED principle is converts electrical energy to light. At present, the design is bright and efficient leds, one of the biggest obstacles is to increase the output power of the LED instead to lower its efficiency. And researchers at the Massachusetts institute of technology, explains their results significantly reduces the effect of applied voltage. According to the calculation, when the voltage is reduced to half, the input power reduces the four times, and the light power and voltage is consistent, also reached half. In other words, when LED output power decrease rate is increasing.

in the experiments, the researchers reduced the input power of the LED, only 30 watts, and measuring the amount of light to output up to 69 watts, efficiency is as high as 230%. Any leds on the same physical mechanism, outside under the action of the applied voltage, electrons and holes have a certain probability of photons. The researchers did not like other studies have tried to increase the probability, but use occurs by the vibration of the atomic lattice of the equipment, send out a small amount of waste heat to generate more electricity.

the use of waste heat emitting process can make the LED cool slightly, its operation is similar to a thermoelectric cooler. Although at room temperature, the temperature of the cooling is insufficient to provide practical, but it could be used to design does not generate heat lamp. When as a heat pump, the device can help solid-state cooling applications, even the generator equipment.

in theory, the low pressure strategy can produce any efficient photon under low voltage, the researchers hope that the technology can provide a new test method of energy saving limit electromagnetic wave communication. Although this method is very interesting in science, but its also not immediately prompt the super efficiency of LED commercial, because demonstration project can only use a very low power input to produce a small amount of light.