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arXiv · 0805.2750

Enhanced spontaneous emission in a photonic crystal light-emitting diode

M. Francardi·L. Balet·A. Gerardino·N. Chauvin·D. Bitauld·L. H. Li·B. Alloing·A. Fiore
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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

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M. Francardi, L. Balet, A. Gerardino, N. Chauvin, D. Bitauld, L. H. Li, B. Alloing, A. Fiore. 2008-05-19. Enhanced spontaneous emission in a photonic crystal light-emitting diode. https://doi.org/10.1063/1.2964186

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