Enhanced spontaneous emission in a photonic crystal light-emitting diode

Abstract

We report direct evidence of enhanced spontaneous emission in a photonic crystal (PhC) light-emitting diode. The device consists of p-i-n heterojunction embedded in a suspended membrane, comprising a layer of self-assembled quantum dots. Current is injected laterally from the periphery to the center of the PhC. A well-isolated emission peak at 1300nm from the PhC cavity mode is observed, and the enhancement of the spontaneous emission rate is clearly evidenced by time-resolved electroluminescence measurements, showing that our diode switches off in a time shorter than the bulk radiative and nonradiative lifetimes

arXiv comment10 pages

References in corpus (3)

• Single photonics at telecom wavelengths using nanowire superconducting detectors
• Radiative emission dynamics of quantum dots in a single cavity micropillar
• Electrically probing photonic bandgap phenomena in contacted defect nanocavities

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• Electrically driven quantum light emission in electromechanically-tuneable photonic crystal cavities
• Temperature dependence of the single photon source efficiency based on QD-cQED
• Tailoring the photon hopping by nearest and next-nearest-neighbour interaction in photonic arrays