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← ScienceWhich phenomenon limits LED efficiency at high currents?
A)Auger recombination reduces photon emission✓
B)Increased reflection due critical illumination
C)Doppler broadening reducing quantum wells
D)Non-radiative heating collapsing excitons
💡 Explanation
Auger recombination causes an electron and hole to recombine non-radiatively, because the freed energy transfers to another electron, rather than emitting a photon; therefore efficiency decreases, rather than improving due other optical effects.
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