Ultrafast exciton dynamics in semiconducting single-walled carbon nanotubes
Ultrafast exciton dynamics in semiconducting single-walled carbon nanotubes
复制标题
半导体单壁碳纳米管中的超快激子动力学
DOI：
10.1080/00268970500525564
复制
发表时间：
2006
影响因子：
1.7
通讯作者：
G. Fleming
中科院分区：
文献类型：
--
作者：
Ying;L. Valkunas;S. Dexheimer;G. Fleming
为了确定单壁碳纳米管的电子激发态的起源，飞秒荧光上转换和频率分辨瞬态吸收测量用于选择性激发/探测特定的纳米管在胶束分散的制备富含个别纳米管。瞬态信号的时间和强度分布的分析，使一个明确地确定在半导体纳米管的基本激发的激子性质，和主要的动力学过程作为一个显着的表现激子-激子湮灭。这些研究令人信服地支持了最长波长的电子激发是激子起源的结论。此外，证据表明，双激子形成单壁纳米管。我们把这篇论文献给我们的朋友和同事鲍勃·哈里斯，他的洞察力和创造奇迹的能力是灵感的源泉。
To define the origin of the electronic excited states of single-walled carbon nanotubes, femtosecond fluorescence up-conversion and frequency-resolved transient absorption measurements were used for selective excitation/probing of particular nanotubes in a micelle-dispersed preparation enriched with individual nanotubes. Analysis of the temporal and intensity profiles of the transient signals enable one to unambiguously identify the excitonic nature of elementary excitations in semiconducting nanotubes, and the predominant dynamical process as a remarkable manifestation of exciton–exciton annihilation. These studies convincingly support the conclusion that the longest wavelength electronic excitations are of excitonic origin. In addition, evidence is shown for bi-exciton formation in single walled nanotubes. ¶We dedicate this paper to our friend and colleague Bob Harris, whose insights and capacity for wonder are a source of inspiration.
影响因子：
3.6
作者：
H. Makino;T. Goto;T. Yao;G. Mousdis;G. Papavassiliou
通讯作者：
H. Makino;T. Goto;T. Yao;G. Mousdis;G. Papavassiliou