Journal
APPLIED PHYSICS LETTERS
Volume 93, Issue 4, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2963029
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Blue multi-quantum-well light-emitting diodes (LEDs) with GaInN quantum wells and polarization-matched AlGaInN barriers are grown by metal-organic chemical vapor deposition. The use of quaternary alloys enables an independent control over interface polarization charges and bandgap and has been suggested as a method to reduce electron leakage from the active region, a carrier loss mechanism that can reduce efficiency at high injection currents-an effect known as the efficiency droop. The GaInN/AlGaInN LEDs show reduced forward voltage, reduced efficiency droop, and improved light-output power at large currents compared to conventional GaInN/GaN LEDs. (c) 2008 American Institute of Physics.
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