Enhanced spontaneous emission in a photonic-crystal light-emitting diode
作者： B Alloing , A Gerardino , LP Laurent Balet , A Andrea Fiore , Njg Nicolas Chauvin
DOI: 10.1063/1.2964186
关键词: Electroluminescence 、 Radiative transfer 、 Quantum dot 、 Optoelectronics 、 Light-emitting diode 、 Heterojunction 、 Materials science 、 Spontaneous emission 、 Photonic crystal 、 Diode
摘要: We report direct evidence of enhanced spontaneous emission in a photonic-crystal (PhC) light-emitting diode. The device consists p-i-n heterojunction embedded suspended membrane, comprising layer self-assembled quantum dots. Current is injected laterally from the periphery to center PhC. A well-isolated peak at 1.3μm PhC cavity mode observed, and enhancement rate clearly evidenced by time-resolved electroluminescence measurements, showing that our diode switches off time shorter than bulk radiative nonradiative lifetimes.
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