Temperature dependent photoluminescence from carbon nanotubes
The temperature dependence of the photoluminescence intensity from frozen single walled carbon nanotube solutions is reported. This is modelled assuming that it is dominated by the small energy splitting between the dark and bright states of the singlet excitons which are found to be in the region o...
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| Format: | Conference item |
| Publicat: |
2007
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| Sumari: | The temperature dependence of the photoluminescence intensity from frozen single walled carbon nanotube solutions is reported. This is modelled assuming that it is dominated by the small energy splitting between the dark and bright states of the singlet excitons which are found to be in the region of 1-5 meV for nanotubes of 0.8-1.2nm. The luminescence is strongly enhanced by a magnetic field along the tube axis due to the mixing of the different valley states of the excitons. |
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