2018
DOI: 10.1021/acs.nanolett.8b01533
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Efficient Emission Enhancement of Single CdSe/CdS/PMMA Quantum Dots through Controlled Near-Field Coupling to Plasmonic Bullseye Resonators

Abstract: A strong increase of spontaneous radiative emission from colloidally synthesized CdSe/CdS/PMMA hybrid particles is achieved when manipulated into plasmonic bullseye resonators with the tip of an atomic force microscope (AFM). This type of antenna provides a broadband resonance, which may be precisely matched to the exciton ground state energy in the inorganic cores. Statistically analyzing the spectral photoluminescence (PL) of a large number of individual coupled and uncoupled CdSe/CdS/PMMA quantum dots, we f… Show more

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Cited by 27 publications
(34 citation statements)
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“…In the future, this problem could be alleviated by deterministically depositing nanodiamonds using scanning-probe microscopy that has been considered as an increasingly viable tool for the assembly of quantum devices from individual constituents. [24,[47][48][49][50] The QPL emitter (shown as #2 in Section SIV, Supporting Information) with a nanodiamond height d = 40 ± 4 nm was selected in accordance with the optimal nanodiamond size derived from simulation. After the trench fabrication, we excited the emitter using a CW pump laser operating at 532 nm and recorded fluorescence images of the structure with a CCD camera.…”
Section: Spp Coupling Efficiencymentioning
confidence: 99%
“…In the future, this problem could be alleviated by deterministically depositing nanodiamonds using scanning-probe microscopy that has been considered as an increasingly viable tool for the assembly of quantum devices from individual constituents. [24,[47][48][49][50] The QPL emitter (shown as #2 in Section SIV, Supporting Information) with a nanodiamond height d = 40 ± 4 nm was selected in accordance with the optimal nanodiamond size derived from simulation. After the trench fabrication, we excited the emitter using a CW pump laser operating at 532 nm and recorded fluorescence images of the structure with a CCD camera.…”
Section: Spp Coupling Efficiencymentioning
confidence: 99%
“…To address these problems, enormous efforts have been made to design various metallic antennas to manipulate the photons emitted from quantum emitters. These metallic antennas support surface-plasmon-polariton (SPP) resonant modes with strong field enhancements, small optical mode volumes, and linear polarizations (electric vectors mainly perpendicular to the metal surface) [8][9][10][11][12][13][14][15][16][17][18]. When a quantum emitter is located very close to a metallic antenna (several nanometers), the photons emitted from the quantum emitter are mainly coupled to the strong SPP resonant modes rather than directly radiating to free space [19].…”
Section: Introductionmentioning
confidence: 99%
“…Plasmonic metal nanostructures have demonstrated the capability to boost the PLQY through local enhancement of the incident optical field by modifying the radiative rate and increasing the out‐coupling. A variety of metallic nanostructures, such as nanowires, nanorods, nanodiscs, nanotriangular prisms, nanoshells, nanocubes, nanocavities, nanogrooves, and nanopores made of Au, Ag, Pt, etc., were employed. The enhancement ratios were in the range of 10–10 3 according to the specialized nanogeometry .…”
Section: Introductionmentioning
confidence: 99%