Enhancement of semiconducting single-wall carbon-nanotube photoluminescence.
Photoluminescence properties of semiconducting single-wall carbon-nanotube (s-SWNT) thin films with different metallic single-wall carbon-nanotube (m-SWNT) concentrations are reported. s-SWNT purified samples are obtained by polymer-assisted selective extraction. We show that the presence of a few m-SWNTs in the sample generates a drastic quenching of the emission. Therefore, the highly purified s-SWNT film is a strongly luminescent material and a good candidate for future applications in photonics, such as near-IR emitters, modulators, and detectors.
Gaufrès
E
E
Institut d'Electronique Fondamentale, CNRS-UMR 8622, Université Paris-Sud 11, 91405 Orsay, France.
Izard
N
N
Vivien
L
L
Kazaoui
S
S
Marris-Morini
D
D
Cassan
E
E