As the Osram guy explains in his video, an overdriven LED ages less if the temperature is the same as on lower currents because you cool em better
Two things let age LEDs
- low current
- heat
It sounds odd but current protects the active zone from aging by migration of faulty spots into it from the surrounding p-n substrate
At 16:15 you see the aging diagram from an 350mA LED driven at 10mA
and the impact is far worse than one driven at 100mA at 150dC junction temperature
Also what testers like Djozz see that at hard overdriven LEDs the radiaten decreases again does not come from heat
In fact its an effect calles Auger recombination
He explain it that there are 3 electrons in the active zone and instead of all 3 producing light two of em use their energy to kick the 3. out of the active
