Department of Physics Papers

Document Type

Journal Article

Date of this Version

10-27-2008

Comments

Suggested Citation:
J.M. Kinder and E.J. Mele. (2008). "Nonradiative recombination of excitons in carbon nanotubes mediated by free charge carriers." Physical Review B. 78, 155429.

© 2008 The American Physical Society
http://dx.doi.org/10.1103/PhysRevB.78.155429.

Abstract

Free electrons or holes can mediate the nonradiative recombination of excitons in carbon nanotubes. Kinematic constraints arising from the quasi-one-dimensional nature of excitons and charge carriers lead to a thermal activation barrier for the process. However, a model calculation suggests that the rate of recombination mediated by a free electron is the same order of magnitude as that of two-exciton recombination. Small amounts of doping may contribute to the short exciton lifetimes and low quantum yields observed in carbon nanotubes.

Date Posted: 13 January 2011

This document has been peer reviewed.