Design considerations for semiconductor nanowire-plasmonic nanoparticle coupled systems for high quantum efficiency nanowires

Mokkapati, Sudha ORCID: https://orcid.org/0000-0003-3260-6560, Saxena, Dhruv, Tan, Hark Hoe and Jagadish, Chennupati 2013. Design considerations for semiconductor nanowire-plasmonic nanoparticle coupled systems for high quantum efficiency nanowires. Small 9 (23) , pp. 3964-3969. 10.1002/smll.201300312

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Abstract

The optimal geometries for reducing the radiative recombination lifetime and thus enhancing the quantum efficiency of III–V semiconductor nanowires by coupling them to plasmonic nanoparticles are established. The quantum efficiency enhancement factor due to coupling to plasmonic nanoparticles reduces as the initial quality of the nanowire increases. Significant quantum efficiency enhancement is observed for semiconductors only within about 15 nm from the nanoparticle. It is also identified that the modes responsible for resonant enhancement in the quantum efficiency of an emitter in the nanowire are geometric resonances of surface plasmon polariton modes supported at the nanowire/nanoparticle interface.

Item Type:	Article
Status:	Published
Schools:	Physics and Astronomy
Subjects:	Q Science > QC Physics
Publisher:	Wiley
ISSN:	1613-6810
Last Modified:	02 Nov 2022 11:53
URI:	https://orca.cardiff.ac.uk/id/eprint/103460

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