Reaction, diffusion and dissociation of excitons on carbon nanotubes

Reaction, diffusion and dissociation of excitons on carbon nanotubes

Photoexcitation of carbon nanotubes generates excitons which decay by exciton-exciton annihilation at sufficient density. We examine this decay under conditions of one, few and many excitons per nanotube. A classic 1D reaction-diffusion behaviour is observed, with decay limited by diffusion for t>...

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Hauptverfasser: Allam, J, Sutton, R, Sajjad, M T, Litvinenko, K, Wang, Z, Siddique, S, Yang, Q-H, Brown, T, Loh, W
Format: Tagungsbericht
Sprache:eng
Schlagworte:
(190.4720) Optical nonlinearities of condensed matter
(320.7120) Ultrafast phenomena
Carbon nanotubes
Chemical technology
Equations
Excitons
Optical pumping
Optical saturation
Optical scattering
Optical sensors
Pulse measurements
Ultrafast optics
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Zusammenfassung:Photoexcitation of carbon nanotubes generates excitons which decay by exciton-exciton annihilation at sufficient density. We examine this decay under conditions of one, few and many excitons per nanotube. A classic 1D reaction-diffusion behaviour is observed, with decay limited by diffusion for t>3ps and by reaction for t
DOI:10.1364/QELS.2010.QThC5