TY - JOUR
T1 - Efficient narrow-band light emission from a single carbon nanotube p-n diode
AU - Mueller, T.
AU - Kinoshita, M.
AU - Steiner, M.
AU - Perebeinos, V.
AU - Bol, A.A.
AU - Farmer, D.M.
AU - Avouris, Ph.
PY - 2009
Y1 - 2009
N2 - Electrically driven light emission from carbon nanotubes could be used in nanoscale lasers and single-photon sources, and has therefore been the focus of much research. However, high electric fields and currents have either been necessary for electroluminescence or have been an undesired side effect, leading to high power requirements and low efficiencies. Furthermore, electroluminescent linewidths have been broad enough to obscure the contributions of individual optical transitions. Here, we report electrically induced light emission from individual carbon nanotube p–n diodes. A new level of control over electrical carrier injection is achieved, reducing power dissipation by a factor of up to 1,000, and resulting in zero threshold current, negligible self-heating and high carrier-to-photon conversion efficiencies. Moreover, the electroluminescent spectra are significantly narrower (~35 meV) than in previous studies, allowing the identification of emission from free and localized excitons.
AB - Electrically driven light emission from carbon nanotubes could be used in nanoscale lasers and single-photon sources, and has therefore been the focus of much research. However, high electric fields and currents have either been necessary for electroluminescence or have been an undesired side effect, leading to high power requirements and low efficiencies. Furthermore, electroluminescent linewidths have been broad enough to obscure the contributions of individual optical transitions. Here, we report electrically induced light emission from individual carbon nanotube p–n diodes. A new level of control over electrical carrier injection is achieved, reducing power dissipation by a factor of up to 1,000, and resulting in zero threshold current, negligible self-heating and high carrier-to-photon conversion efficiencies. Moreover, the electroluminescent spectra are significantly narrower (~35 meV) than in previous studies, allowing the identification of emission from free and localized excitons.
U2 - 10.1038/NNANO.2009.319
DO - 10.1038/NNANO.2009.319
M3 - Article
SN - 1748-3387
VL - 5
SP - 27
EP - 31
JO - Nature Nanotechnology
JF - Nature Nanotechnology
IS - 1
ER -