Enhancing and redirecting carbon nanotube photoluminescence by an optical antenna

Böhmler, Miriam; Hartmann, Nicolai F.; Georgi, Carsten; Hennrich, Frank; Green, Alexander A.; Hersam, Mark C.; Hartschuh, Achim

doi:10.1364/oe.18.016443

Cited by 35 publications

(63 citation statements)

References 33 publications

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“…The radiative rate enhancement is chosen to be smaller due to the weaker plasmonic response of our gold tips at the PL energy with respect to the excitation at 632.8 nm. 32 …”

Section: ϫ3mentioning

confidence: 99%

Probing Exciton Localization in Single-Walled Carbon Nanotubes Using High-Resolution Near-Field Microscopy

et al. 2010

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We observe localization of excitons in semiconducting single-walled carbon nanotubes at room temperature using high-resolution near-field photoluminescence (PL) microscopy. Localization is the result of spatially confined exciton energy minima with depths of more than 15 meV connected to lateral energy gradients exceeding 2 meV/nm as evidenced by energy-resolved PL imaging. Simulations of exciton diffusion in the presence of energy variations support this interpretation predicting strongly enhanced PL at local energy minima.

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“…The radiative rate enhancement is chosen to be smaller due to the weaker plasmonic response of our gold tips at the PL energy with respect to the excitation at 632.8 nm. 32 …”

Section: ϫ3mentioning

confidence: 99%

Probing Exciton Localization in Single-Walled Carbon Nanotubes Using High-Resolution Near-Field Microscopy

et al. 2010

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“…Recently, Hartmann et al, reported the launching of surface plasmon polaritons (SPPs) in metal films by single SWNT acting as dipolar emitters, indicating an energy transfer from the nanotube excitons to the surface plasmons [8]. The demonstration of enhanced spontaneous emission of semiconducting materials near nanostructured metallic surfaces [9], exciton-plasmon conversion [8,10,11], and large optical gain [12] create a strong motivation to explore the integration of SWNT optical properties in a plasmonic platform.…”

mentioning

confidence: 99%

In-plane remote photoluminescence excitation of carbon nanotube by propagating surface plasmon

et al. 2012

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In this work, we demonstrate propagating surface plasmon polariton (SPP) coupled photoluminescence (PL) excitation of single-walled carbon nanotube (SWNT). SPPs were launched at a few micrometers from individually marked SWNT, and plasmon-coupled PL was recorded to determine the efficiency of this remote in-plane addressing scheme. The efficiency depends upon the following factors: (i) longitudinal and transverse distances between the SPP launching site and the location of the SWNT and (ii) orientation of the SWNT with respect to the plasmon propagation wave vector (k SPP ). Our experiment explores the possible integration of carbon nanotubes as a plasmon sensor in plasmonic and nanophotonic devices. [8,10,11], and large optical gain [12] create a strong motivation to explore the integration of SWNT optical properties in a plasmonic platform.In this Letter, we report on remote in-plane photoluminescence (PL) excitation of individual SWNT by propagating SPPs in metal thin film strip waveguides. Our experiment provides critical information on the coupling properties between a propagating surface plasmon mode and electronic resonances of an individual SWNT.High pressure carbon monoxide (HiPCO) synthesized SWNTs were dispersed in a 1% wt. sodium dodecyl sulfate solution by sonication and were subsequently processed by centrifugation [8]. The nanotubes used in our experiment range in diameter between 0.7-1.2 nm. Nanotubes were randomly deposited on top of plasmonic waveguides by spin coating. The strip waveguides were fabricated by standard electron-beam lithography and lift-off processes on indium tin oxide (ITO)-coated cover glass slips. The structure consists of Au strips of varying length (∼10-30 μm), with a width of 5 μm and a thickness of 35 nm.

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“…For a metal sphere antenna and single fluorescent molecules this has been demonstrated by Kühn et al 35 The influence of the antenna directivity and the resulting spatial redirection of emission has been studied for different antenna types including metal spheres, finite-length rod antennas and semi-infinite metal tips. 35,44,45 These studies also highlighted the substantial influence of the dielectric substrate and the associated spatial emission distribution. Using back focal plane imaging of the photoluminescence (PL) emission excitation and emission rate enhancement could be distinguished and quantified for single semiconducting single-walled carbon nanotubes as was shown by Böhmler and co-workers.…”

Section: Tip-enhanced Fluorescence-mentioning

confidence: 88%

“…Using back focal plane imaging of the photoluminescence (PL) emission excitation and emission rate enhancement could be distinguished and quantified for single semiconducting single-walled carbon nanotubes as was shown by Böhmler and co-workers. 45 2.3.3 Photocurrent and electroluminescence-Photocurrent and electroluminescence spectroscopy provide insight into the optoelectronic properties of materials by probing correlated optical and charge carrier transport phenomena. Following the scheme in Fig.…”

Section: Tip-enhanced Fluorescence-mentioning

confidence: 99%

“…In order to benefit from the antenna-enhanced emission quantified by the antenna gain (eqn (2)), the redirected emission needs to fit within the angular detection range. 45,105 Drastic signal loss can occur especially when using objectives with a low NA. The collection efficiency of a detection system can be calculated by (7) where D(θ, φ) is the directivity of the antenna taking into account the sample substrate.…”

Section: Microscopesmentioning

confidence: 99%

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Tip‐Enhanced Near‐Field Optical Microscopy

Hartschuh¹

2014

Handbook of Spectroscopy

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Tip-enhanced near-field optical microscopy (TENOM) is a scanning probe technique capable of providing a broad range of spectroscopic information on single objects and structured surfaces at nanometer spatial resolution and with highest detection sensitivity. In this review, we first illustrate the physical principle of TENOM that utilizes the antenna function of a sharp probe to efficiently couple light to excitations on nanometer length scales. We then discuss the antennainduced enhancement of different optical sample responses including Raman scattering, fluorescence, generation of photocurrent and electroluminescence. Different experimental realizations are presented and several recent examples that demonstrate the capabilities of the technique are reviewed.

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Enhancing and redirecting carbon nanotube photoluminescence by an optical antenna

Cited by 35 publications

References 33 publications

Probing Exciton Localization in Single-Walled Carbon Nanotubes Using High-Resolution Near-Field Microscopy

Probing Exciton Localization in Single-Walled Carbon Nanotubes Using High-Resolution Near-Field Microscopy

In-plane remote photoluminescence excitation of carbon nanotube by propagating surface plasmon

Tip‐Enhanced Near‐Field Optical Microscopy

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