LED's efficiency exceeds 100%
phys.org
(PhysOrg.com) -- For the first time, researchers have demonstrated that an LED can emit more optical power than the electrical power it consumes. Although scientifically intriguing, the results won’t immediately result in ultra-efficient commercial LEDs since the demonstration works only for LEDs with very low input power that produce very small amounts of light.
  • pelya@lemmy.worldEnglish
    4·
    1 year ago

    Is this method converting the heat entropy into a coherent light, or in other words, useful work? Sounds like reversing the second law of thermodynamics.

    • NaibofTabr@infosec.pubEnglish
      5·
      1 year ago

      The researchers […] took advantage of small amounts of excess heat to emit more power than consumed. This heat arises from vibrations in the device’s atomic lattice, which occur due to entropy.

      Basically yes.

      But… this article is 13 years old.

  • Naz@sh.itjust.worksEnglish
    1·
    1 year ago

    I’ve got new blue LED bulbs that emit 133 lux while consuming 5 watts of electricity, which is 26.6 lumens/watt.

    It is so bright that it blows the room out with blue color/light, so I completely believe this article.