Exciton energy transfer in pairs of single-walled carbon nanotubes.
We studied the exciton energy transfer in pairs of semiconducting nanotubes using high-resolution optical microscopy and spectroscopy on the nanoscale. Photoluminescence from large band gap nanotubes within bundles is observed with spatially varying intensities due to distance-dependent internanotube transfer. The range of efficient energy transfer is found to be limited to a few nanometers because of competing fast nonradiative relaxation responsible for low photoluminescence quantum yield.
Qian
Huihong
H
Department Chemie and Biochemie and CeNS, Ludwig-Maximilians-Universität München, 81377 München, Germany.
Georgi
Carsten
C
Anderson
Neil
N
Green
Alexander A
AA
Hersam
Mark C
MC
Novotny
Lukas
L
Hartschuh
Achim
A
D003198:Computer Simulation; D003460:Crystallization / Q000379:methods*; D004579:Electron Transport; D004735:Energy Transfer; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008956:Models, Chemical; D008968:Molecular Conformation; D036103:Nanotechnology / Q000379:methods*; D037742:Nanotubes, Carbon / Q000737:chemistry* / Q000648:ultrastructure*; D010316:Particle Size
D046911:Macromolecular Substances; D037742:Nanotubes, Carbon