Photoluminescence from intertube carrier migration in single-walled carbon nanotube bundles.
Photoluminescence (PL) identifies spectroscopic signatures of intertube transfer of optically pumped carriers in single-walled carbon nanotube (SWNT) ensembles. Resonant photoexcitation of large band gap SWNTs produces strong PL from smaller band gap SWNTs. Magnetic alignment measurements associate the energy-transfer PL peaks with the formation of SWNT bundles, suggesting that efficient coupling results from physical contact.
Torrens
O N
ON
Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, Pennsylvania 19104, USA.
Milkie
D E
DE
Zheng
M
M
Kikkawa
J M
JM
D004247:DNA / Q000737:chemistry*; D049449:Luminescence; D008280:Magnetics; D009038:Motion; D037742:Nanotubes, Carbon / Q000737:chemistry*; D014867:Water / Q000737:chemistry
D037742:Nanotubes, Carbon; D014867:Water; D004247:DNA