Fluorescence Efficiency of Individual Carbon Nanotubes

The luminescence efficiency of individual single-walled carbon nanotubes was determined by comparing the fluorescence from individual nanotubes to single CdTe/ZnS quantum dots with a well-defined fluorescence quantum yield (QY). The single carbon nanotube QY was determined to be 3 ± 1%, nearly 100 t...

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Veröffentlicht in:	Nano letters 2007-12, Vol.7 (12), p.3698-3703
Hauptverfasser:	Carlson, Lisa J, Maccagnano, Sara E, Zheng, Ming, Silcox, John, Krauss, Todd D
Format:	Artikel
Sprache:	eng
Schlagworte:	Condensed matter: electronic structure, electrical, magnetic, and optical properties Cross-disciplinary physics: materials science rheology Exact sciences and technology Materials science Microscopy, Electron, Scanning Transmission Nanocrystalline materials Nanoscale materials and structures: fabrication and characterization Nanotubes Nanotubes, Carbon - chemistry Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures Physics Quantum dots Quantum Theory Spectrometry, Fluorescence Spectrophotometry
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Zusammenfassung:	The luminescence efficiency of individual single-walled carbon nanotubes was determined by comparing the fluorescence from individual nanotubes to single CdTe/ZnS quantum dots with a well-defined fluorescence quantum yield (QY). The single carbon nanotube QY was determined to be 3 ± 1%, nearly 100 times greater than values previously reported for ensembles. The intrinsic nanotube QY is potentially much higher than previously believed and appears lower in ensembles due to defective nanotubes and residual bundles.
ISSN:	1530-6984 1530-6992
DOI:	10.1021/nl072014+