Diameter dependence of exciton-phonon interaction in individual single-walled carbon nanotubes studied by microphotoluminescence spectroscopy
Diameter dependence of exciton-phonon interaction in individual single-walled carbon nanotubes studied by microphotoluminescence spectroscopy
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DOI：
10.1103/physrevb.73.233401
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发表时间：
2006-06-01
影响因子：
3.7
通讯作者：
Kanemitsu, Yoshihiko
中科院分区：
文献类型：
--
作者：
Inoue, Tadashi;Matsuda, Kazunari;Kanemitsu, Yoshihiko
我们研究了单壁碳纳米管（SWNTs）的激子发光线宽的直径依赖性的显微光致发光（μ-PL）光谱。单壁碳纳米管悬置在图案化的硅衬底上，在室温下的μ-PL光谱的线形可以用单洛伦兹函数拟合。结果表明，单壁碳纳米管的直径对μ-PL谱线的宽度有很大的影响，随着直径的减小，激子-声子相互作用增强。
We have investigated the diameter dependence of the exciton luminescence linewidth in individual single-walled carbon nanotubes (SWNTs) by means of microphotoluminescence (mu-PL) spectroscopy. The line shapes of mu-PL spectra for single SWNTs suspended on a patterned Si substrate at room temperature can be fitted by single Lorentzian functions. It is found that the mu-PL linewidth depends strongly on the diameter of SWNTs and the exciton-phonon interaction is enhanced with a decrease of the diameter.