Gate-induced blueshift and quenching of photoluminescence in suspended single-walled carbon nanotubes

Details Gate-induced blueshift and quenching of photoluminescence in suspended single-walled carbon nanotubes Gate-induced blueshift and quenching of photoluminescence in suspended single-walled carbon nanotubes

2011-04-27

arxiv.org/abs/1104.5062v1

Phys. Rev. B 84, 121409(R) (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.84.121409

Gate-voltage effects on photoluminescence spectra of suspended single-walled carbon nanotubes are investigated. Photoluminescence microscopy and excitation spectroscopy are used to identify individual nanotubes and to determine their chiralities. Under an application of gate voltage, we observe slight blueshifts in the emission energy and strong quenching of photoluminescence. The blueshifts are similar for different chiralities investigated, suggesting extrinsic mechanisms. In addition, we find that the photoluminescence intensity quenches exponentially with gate voltage.

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