Analysing the photoluminescence intensities of single-walled carbon nanotubes

被引：3

作者：

Heeg, Sebastian ^{[1
]}

Abrahamson, Joel T. ^{[2
]}

Strano, Michael S. ^{[2
]}

Reich, Stephanie ^{[1
]}

机构：

[1] Free Univ Berlin, Inst Expt Phys, D-14195 Berlin, Germany

[2] MIT, Dept Chem Engn, Cambridge, MA 02139 USA

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2012年 / 249卷 / 12期

关键词：

carbon nanotubes; chirality abundance; intensity distribution; photoluminescence excitation; POPULATION ANALYSIS; ABSORPTION-SPECTRA; FLUORESCENCE; RESONANCES; RAMAN;

D O I：

10.1002/pssb.201200283

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We study the photoluminescence and photoluminescence excitation intensities of single-walled carbon nanotubes. To derive the chirality fractions of semiconducting tubes from these optical methods requires a thorough analysis of the experimental parameters and the lifetimes of the excitonic states. We obtain the intensity distribution from the product of the widths of the first and second excitonic transition and the intensity of the absorption of the second excited state. Compared with previous analysis protocols our intensity distribution points towards a chirality abundance which is (i) narrower in diameter, (ii) centred at smaller diameters and (iii) more strongly dominated by armchair-like tubes. We present a recipe for the fit of luminescence data.

引用

页码：2473 / 2478

页数：6

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