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Title: Plasmon-exciton systems with high quantum yield using deterministic aluminium nanostructures with rotational symmetries
Authors: Tobing, Landobasa Yosef Mario
Muhammad Danang Birowosuto
Fong, Kah Ee
Gao, Yuan
Tong, Jinchao
Suo, Fei
Dang, Cuong
Demir, Hilmi Volkan
Zhang, Dao Hua
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Tobing, L. Y. M., Muhammad Danang Birowosuto, Fong, K. E., Gao, Y., Tong, J., Suo, F., Dang, C., Demir, H. V. & Zhang, D. H. (2019). Plasmon-exciton systems with high quantum yield using deterministic aluminium nanostructures with rotational symmetries. Nanoscale, 11(42), 20315-20323.
Project: SERC 1720700038
SERC A1883c0002
2017-T1- 002-117
Journal: Nanoscale
Abstract: The abundance and corrosion-resistant properties of aluminium, coupled with its compatibility to silicon processing make aluminium an excellent plasmonic material for light–matter interaction in the ultraviolet-visible spectrum. We investigate the interplay of the excitation and emission enhancements of quantum dots coupled with ultra-small aluminium nanoantennae with varying rotational symmetries, where emission enhancements of ∼8 and ∼6 times have been directly measured for gammadion and star-shaped structures. We observed spontaneous emission modification in the Al antenna with a C6 symmetry and deduce a Purcell factor in the range of 68.01 < FP < 118.25 at plasmonic hotspots, corresponding to a modified quantum yield of >89% in the single antenna and near-unity quantum yield at the plasmonic hotspots. This finding brings us a step closer towards the realization of circularly polarized nanoemitters.
ISSN: 2040-3364
DOI: 10.1039/c9nr06311k
Rights: © 2019 The Royal Society of Chemistry. All rights reserved. This paper was published in Nanoscale and is made available with permission of The Royal Society of Chemistry.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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