Carrier density dependence of plasmonenhanced nonradiative energy transfer in a hybrid quantum well-quantum dot structure
Citation:
Higgins L.J, Karanikolas V.D, Marocico C.A, Bell A.P, Sadler T.C, Parbrook P.J, Bradley A.L, Carrier density dependence of plasmonenhanced nonradiative energy transfer in a hybrid quantum well-quantum dot structure, Optics Express, 23, 2, 2015, 1377 - 1387Download Item:
Abstract:
An array of Ag nanoboxes fabricated by helium-ion lithography is used to demonstrate plasmon-enhanced nonradiative energy transfer in a hybrid quantum well-quantum dot structure. The nonradiative energy transfer, from an InGaN/GaN quantum well to CdSe/ZnS nanocrystal quantum dots embedded in an ~80 nm layer of PMMA, is investigated over a range of carrier densities within the quantum well. The plasmon-enhanced energy transfer efficiency is found to be independent of the carrier density, with an efficiency of 25% reported. The dependence on carrier density is observed to be the same as for conventional nonradiative energy transfer. The plasmon-coupled energy transfer enhances the QD emission by 58%. However, due to photoluminescence quenching effects an overall increase in the QD emission of 16% is observed.
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http://people.tcd.ie/bradlelDescription:
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Author: Bradley, Louise
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Journal ArticleCollections
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Optics Express23
2
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Full text availableKeywords:
Energy TransferDOI:
http://dx.doi.org/10.1364/OE.23.001377Metadata
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