Optics Express · 2019 · 52 citations · 30 references
EngineeringMaterials EngineeringMaterials ScienceElectronic MaterialsOptoelectronicsSemiconductor DevicesLight-emitting DiodesQuantum WellsSemiconductor Device MaterialsSemiconductor PhysicsSemiconductor Thin FilmsWide-bandgap SemiconductorsCurrent DensityDefect DensityDisplay ApplicationsGallium NitrideGreen Light-emitting DiodesPolarizationPolarization BehaviorSidewall Passivation
and exhibited a size-independent EQE of 2% by sidewall passivation using atomic-layer deposition, followed by an extremely low leakage current of ~0.1 nA at -5 V. Moreover, optical polarization behavior with a polarization ratio of 40% was observed. This work demonstrated long-wavelength µLEDs fabricated on semipolar GaN grown on foreign substrate, which are applicable for a variety of display applications at a low cost.
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