Temperature Dependence of Exciton Recombination in Semiconducting Single-Wall Carbon Nanotubes

Berger, Sébastien; Voisin, Christophe; Cassabois, Guillaume; Delalande, Claude; Roussignol, Philippe; Marie, X.

doi:10.1021/nl062609p

Cited by 77 publications

(119 citation statements)

References 21 publications

Supporting

Mentioning

109

Contrasting

Order By: Relevance

“…The theoretical analysis of these results indicates that the lowest energy SWNT exciton state is an optically dark triplet state. This finding is in agreement with various other recent observations [6,15,17,18] and explains the low fluorescence quantum yield as well as the comparatively short exciton lifetime in the 10-100 ps range [19], which are much shorter than the expected radiative lifetime observed even for an individual SWNT [21].…”

Section: Introductionsupporting

confidence: 93%

See 1 more Smart Citation

Optical spectroscopy of single‐walledcarbon nanotubes: From excitonic effects towards control of the radiative lifetime

Pomraenke¹,

Vasa²,

Lienau³

2008

Physica Status Solidi (b)

View full text Add to dashboard Cite

We have recently studied excitonic effects on the optical properties of single‐walled carbon nanotubes by means of two‐photon spectroscopy and time‐resolved photoluminescence spectroscopy. For nanotubes with diameters between 6.8 Å and 9.0 Å, the two‐photon spectra give evidence for large binding energies between 300 meV to 400 meV. Theoretical simulations of these spectra indicate that the lowest energy exciton state in nanotubes is an optically dark exciton, which has profound implications on the luminescence yield and exciton dynamics in single‐walled nanotubes. Indeed, time‐resolved photoluminescence measurements of individual nanotubes reveal low quantum yields and rather short exciton lifetimes ranging from 10 ps to 200 ps, which are affected by exciton relaxation between bright and dark states and non‐radiative exciton recombination. These results suggest that a control of the radiative lifetime of nanotube excitons may be a viable strategy for enhancing their luminescence yield. Here, we propose that exciton‐coupling to surface plasmon polaritons in metallic nanostructures may result in a substantial enhancement of the radiative exciton decay rate. Two‐photon luminescence excitation spectra of single‐walled carbon nanotubes. The luminescence intensity is plotted as a function of excitation and detection wavelength. The various two‐photon resonances are assigned to nanotube species with different chiral indices (n,m), as indicated in the figure. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

show abstract

Section: Introductionsupporting

confidence: 93%

“…Since then, a variety of detailed experimental and theoretical studies have greatly improved the understanding of these properties [9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Optical spectroscopy of single‐walledcarbon nanotubes: From excitonic effects towards control of the radiative lifetime

Pomraenke¹,

Vasa²,

Lienau³

2008

Physica Status Solidi (b)

View full text Add to dashboard Cite

show abstract

“…The individual SWNTs are further embedded in a gelatin matrix following the procedure described in Ref. [26], in order to perform temperature-dependent measurements.…”

mentioning

confidence: 99%

Phonon-induced dephasing in single-wall carbon nanotubes

et al. 2011

Self Cite

View full text Add to dashboard Cite

International audienceWe report on original nonlinear spectral hole-burning experiments in ensembles of single-wall carbon nanotubes. We have measured the temperature dependence of the excitonic homogeneous linewidth from 5 K up to room temperature. We show that the phonon-induced broadening in the weak coupling regime predominantly consists in pure dephasing. We present theoretical calculations of the exciton scattering rate due to phonon absorption within a one-dimensional framework for both excitons and phonons. We obtain a fair agreement with our experimental data and we discuss the specific properties of the exciton-phonon coupling in single-wall carbon nanotubes

show abstract

“…The regular method to circumvent this effect, is to disperse the nanotubes in water suspensions by means of a surfactant that prevents rebundling of the nanotubes [11]. We further incorporate gelatin to this suspension [12] in order to obtain a solid state film that preserves the micelle structure as evidenced by the equivalent PL level compared to the initial suspension. This solid state film may be cooled down to cryogenic temperatures and heated back to room temperature for several cycles without any apparent change in the optical properties.…”

Section: Excitonsmentioning

confidence: 99%

“…Finally (B) is coupled to the ground state through a radiative rate g R . The values for g NR were extracted from previous time-resolved PL measurements [12] and g R reads g R /g 0 = ffiffiffi ffi T p for a 1D system. The agreement with experimental data is excellent and allows to extract the energy splitting between the dark and bright state for (9,4) nanotubes.…”

Section: Excitonsmentioning

confidence: 99%

Excitonic signatures in the optical response of single‐wall carbon nanotubes

Voisin¹,

Berger²,

Berciaud³

et al. 2012

Physica Status Solidi (b)

View full text Add to dashboard Cite

The optical properties of single-wall carbon nanotubes (SWNTs) are dominated by the excitonic character of the transitions even at room temperature. The very peculiar properties of these excitons arise from both the one-dimensional (1D) nature of carbon nanotubes and from the electronic properties of graphene from which nanotubes are made. We first propose a brief qualitative review of the structure of the excitonic manifold and emphasize the role of dark states. We describe recent experimental investigations of this excitonic structure by means of temperature dependent PL measurements. We investigate the case of upper sub-bands and show that high-order optical transitions remain excitonic for large diameter nanotubes. A careful investigation of Rayleigh scattering spectra at the single nanotube level reveals clear exciton-phonon side-bands and Lorentzian line profiles for all semi-conducting nanotubes. In contrast, metallic nanotubes show an ambivalent behavior which is related to the reduced excitonic binding energy.Schematic of the exciton manifold in single-wall carbon nanotubes.

show abstract

Temperature Dependence of Exciton Recombination in Semiconducting Single-Wall Carbon Nanotubes

Cited by 77 publications

References 21 publications

Optical spectroscopy of single‐walledcarbon nanotubes: From excitonic effects towards control of the radiative lifetime

Optical spectroscopy of single‐walledcarbon nanotubes: From excitonic effects towards control of the radiative lifetime

Phonon-induced dephasing in single-wall carbon nanotubes

Excitonic signatures in the optical response of single‐wall carbon nanotubes

Contact Info

Product

Resources

About