Phys. Rev. Lett. 93, 017403 (2004) [4 pages]Ultrafast Ground-State Recovery of Single-Walled Carbon NanotubesReceived 27 May 2003; published 1 July 2004 The band-edge relaxation dynamics in isolated and bundled single-walled carbon nanotubes (SWNTs) were studied with ultrafast transient absorption spectroscopy. The loss of the excited state population was unexpectedly fast, with >90% of the transient absorption signal recovering in a few hundred fs. For isolated SWNTs in resonance with a SWNT electronic transition, a novel relaxation pathway was observed, characterized by a relatively slow signal recovery (>100 ps). We ascribe this relaxation pathway to the decay of excited electrons from the band-edge. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.017403
DOI:
10.1103/PhysRevLett.93.017403
PACS:
78.67.Ch, 73.22.–f, 78.47.+p
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.