Long-lived charged states in single-walled carbon nanotubes

被引：25
|
作者：
Gadermaier, C
Menna, E
Meneghetti, M
Kennedy, WJ
Vardeny, ZV
Lanzani, G
机构：
[1] ULTRAS, INFM, Dipartimento Fis, Politecn Milan, I-20133 Milan, Italy
[2] Univ Padua, Dept Chem Sci, I-35131 Padua, Italy
[3] Univ Utah, Dept Phys, Salt Lake City, UT 84112 USA
来源：
NANO LETTERS | 2006年 / 6卷 / 02期
关键词：
D O I：
10.1021/nl051970t
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We present continuous wave photoinduced absorption spectroscopy of single-walled carbon nanotubes dispersed in a polymer matrix. The spectrum is dominated by a modulation of the absorption line shape, predominantly of large diameter tubes, that we assigned to electroabsorption caused by local electric fields arising from trapped photoinduced charges. The lack of selectivity in the excitation points to an efficient migration of the photoexcited states, either the singlet excitons or the charges resulting from their dissociation
引用
收藏
页码：301 / 305
页数：5
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