Your Search Results

Use this resource - and many more! - in your textbook!

AcademicPub holds over eight million pieces of educational content for you to mix-and-match your way.

Experience the freedom of customizing your course pack with AcademicPub!
Not an educator but still interested in using this content? No problem! Visit our provider's page to contact the publisher and get permission directly.

Reaction, diffusion and dissociation of excitons on carbon nanotubes

By: Sajjad, M.T.; Sutton, R.; Allam, J.; Loh, W.; Litvinenko, K.; Brown, T.; Yang, Q.-H.; Siddique, S.; Wang, Z.;

2010 / IEEE / 978-1-55752-890-2

Description

This item was taken from the IEEE Conference ' 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>3ps and by reaction for t<3ps. At high densities the exciton population saturates, and by analysis of the rate equations we show that this is consistent with dissociation of excitons when their spacing is 1.3nm, close to the exciton length.