A typical light emitting diode, captioned here only for illustrative purposes. Not the actual LED used in the presently discussed research.

MIT engineers create LED that has 230% efficiency. Thermodynamics laws still in place

A typical light emitting diode, captioned here only for illustrative purposes. Not the actual LED used in the presently discussed research.

A typical light emitting diode, captioned here only for illustrative purposes. Not the actual LED used in the presently discussed research.

A group of researchers at MIT have successfully managed to create a light emitting diode (LED) that has an electrical efficiency greater than 100%. This might sound preposterous, and against everything you learned in physics, however the system is still governed by fundamental laws of thermodynamics.

This extraordinary power conversion efficiency was obtained by a decrease in applied voltage to an LED with a small band gap. As the voltage was steadily halved, it was observed that the electrical power was reduced by a factor of four, but the light power emitted only dropped by a factor of two. Where this extra energy come from? The key here is lattice vibrations caused by heat coming from the surroundings. Thus, the device’s efficiency is inversely proportional to its output power and diverges as the applied voltage approaches zero. Over 100% efficiency was reached in the experiments, all without violating energy conservation principles.

The best efficiency was reached when such a LED was plugged to 30 picowatts, powering a LED which produced 69 picowatts of light, in the trillionth of a watt order – 230% efficiency. There’s a huge flaw in this otherwise miracle system – the power itself is simply too small to light anything. The principle itself is terribly exciting and the MIT scientists involved in the research are confident these findings will aid new advances in energy-efficiency electromagnetic communication.

Results were described in a recently published paper in the journal Physical Review Letters.

6 thoughts on “MIT engineers create LED that has 230% efficiency. Thermodynamics laws still in place

  1. Anonymous

    So you could possibly create a communication system based on luminosity.  You would not be limited by binary, and the system would be twice as efficient as the energy input.  

    Where can I test one?

  2. tibipuiu

    you’d need energy to power the computer and reading unit, and would involve a lot more circuity where efficiency would get reduced. Doesn’t seem practical to me. 

    I don’t think they’re available to the public. Try contacting the MIT researchers if you’re serious enough about proposing an idea. Best of luck! 

  3. Asdasd

    it could be possible, but it seems like binary is the only really viable option, considering noise and natural instability of systems. Also, the concept of electron entanglement is being promoted today which could lead to quantum teleportation and hence faster than light speed communications. Look into it, and decide if this is more likely than luminosity communication.

    Don’t get me wrong, if you still believe in your idea all the power to you.  In fact, it could be stepping stone to quantum communications, but only for short distance communications, I think. Am I right?

  4. Paul Lowrance

    My research topped that ~ a half decade ago. We’re getting Infinite efficiency. They will learn that when the diode is sufficiently undisturbed that it will produce DC power without *any* known input. I’ve spent years addressing every possible source. It’s been replicated by notable academic scientists. One has a PhD in Physics with also a degree in Electrical Engineering, who specializes in diodes, LEDs, and lasers, who has numerous published scientific papers. He replicated the experiment and to his surprise the shielded LED produced DC power without any input.The key is the E-field. It has nothing to do with diode rectification. Raw piezo elements also have intense internal E-field, stronger than diodes, and they produce more DC voltage & current. Recently a highly shielded passive piezo element was producing 9.54 volts at over 10pA DC.For details about the research see –>http://www.globalfreeenergy.info/2011/10/13/scientific-discovery-how-to-replicate/

  5. John Smith

    That’s just theoritical bullshit. Come with a real application and we can talk. It’s easy to pick “Infinite efficiency” designs but taking in account “grey energy” (the cost in energy to extract, transform and build the design) can anyone propose something gainful???

    @facebook-100000169074778:disqus: 9V, 10pA DC: 10^-12 A DC => oh yeah, you just need to assemble 10^12 of these piezos to have a decent 9V / 1A DC output. I bet anything you want that you cant propose any assembly design that doesnt suffer, say microamper losses per unit?

    Fuck, I only have basic degree in electrotechnics but I can smell bullshit in the air better than a wifi monitor can capture management frames.

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