Journal
APPLIED PHYSICS LETTERS
Volume 93, Issue 14, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2964186
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Funding
- Swiss SER through COST-P11 [C05-70]
- Swiss National Science Foundation through the Professeur boursier program
- EU-FP6 IP QAP [15848]
- Network of Excellence ePIXnet,
- Italian MIUR-FIRB program
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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 1.3 mu m 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. (C) 2008 American Institute of Physics.
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