Reaction, diffusion and dissociation of excitons on carbon nanotubes

Allam, J
Sutton, R
Sajjad, MT
Litvinenko, K
Wang, Z
Siddique, S
Yang, QH
Brown, T
Loh, W

Publication date

December 2010

Abstract

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. © 2010 Optical Society of America

Extracted data

We use cookies to provide a better user experience.

Data Protection

Reaction, diffusion and dissociation of excitons on carbon nanotubes

Abstract

Extracted data

Reaction, diffusion and dissociation of excitons on carbon nanotubes

Abstract

Extracted data

Related items

Related items