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

AutorPaniagua-Domínguez, R. ; Grzela, G.; Gómez Rivas, J. Sánchez-Gil, J.A.
Fecha de publicación2013
EditorRoyal Society of Chemistry (Great Britain)
CitaciónNanoscale 5: 10582- 10590 (2013)
ResumenPhotoluminescence 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. © 2013 The Royal Society of Chemistry.
URIhttp://hdl.handle.net/10261/103741
DOI10.1039/c3nr03001f
Identificadoresdoi: 10.1039/c3nr03001f
issn: 2040-3364
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