Matsuda, Kazunari and Inoue, Tadashi and Murakami, Yoichi and Maruyama, Shigeo and Kanemitsu, Yoshihiko (2008) Exciton dephasing and multiexciton recombinations in a single carbon nanotube. PHYSICAL REVIEW B, 77 (3).
Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.
Official URL: http://link.aps.org/doi/10.1103/PhysRevB.77.033406
We studied the temperature and excitation intensity dependence of exciton luminescence in individual single-walled carbon nanotubes (SWNTs) using single nanotube photoluminescence (PL) spectroscopy. The linear temperature dependence of the PL linewidth in a single SWNT implies that the exciton dephasing is dominated by the interaction between the exciton and the phonon mode with very low energy under lower-excitation conditions. Saturation of the PL intensity and broadening of the PL linewidth in a single SWNT occur simultaneously with an increase in excitation laser intensity. Our findings show that the rapid exciton-exciton annihilation through multiparticle Auger recombination broadens the homogeneous PL linewidth.
|Subjects:||Physical Science > Nanophysics|
Physical Science > Nano objects
|Deposited On:||20 Jan 2009 16:30|
|Last Modified:||20 Jan 2009 16:30|
Repository Staff Only: item control page