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To learn more about our privacy policy haga clic aquí150w Street Light Housing manufacturer introduces that the junction temperature of the LED is caused by two factors:
1. The internal quantum efficiency is not high, that is, when electrons and holes recombine, 100% photons cannot be generated, which is usually called "current leakage" to reduce the recombination rate of carriers in the PN region. The leakage current multiplied by the voltage is the power of this part, which is converted into heat energy, but this part does not account for the main component, because the internal photon efficiency is now close to 90%.
2. The photons generated inside cannot all be emitted to the outside of the chip and eventually converted into heat. This part is the main reason, because the current external quantum efficiency is only about 30%, and most of it is converted into heat.
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