Enhanced and directional emission of semiconductor nanowires tailored through leaky/guided modes

R. Paniagua-Dominguez, G. Grzela, J. Gomez Rivas, J.A. Sanchez-Gil

Research output: Contribution to journalArticleAcademicpeer-review

68 Citations (Scopus)
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Abstract

Photoluminescence from finite semiconductor nanowires is theoretically investigated, exploring and predicting their antenna-like properties for light emission in a variety of configurations of interest in Nanophotonics. The theoretical analysis is based on the leaky/guided mode dispersion relation for infinite nanowires, which govern the local density of available electromagnetic states. Light emission from finite nanowires is then numerically investigated in various scenarios with regard to its enhancement and directionality. A simple analytical model is derived that, upon tuning leaky/guided mode coupling through dipole position/orientation and nanowire length, allows us to predict their antenna-like behavior and thus to tailor photoluminescence (including magnetic dipole transitions) at will, with regard to both enhancement/inhibition and associated radiation patterns.
Original languageEnglish
Pages (from-to)10582-10590
Number of pages9
JournalSpecial Publication - Royal Society of Chemistry
Volume5
Issue number21
DOIs
Publication statusPublished - 2013

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