Determining the Chiral Index of Semiconducting Carbon Nanotubes Using Photoconductivity Resonances

被引：13

作者：

DeBorde, T. ^{[1
]}

Aspitarte, L. ^{[1
]}

Sharf, T. ^{[1
]}

Kevek, J. W. ^{[1
]}

Minot, E. D. ^{[1
]}

机构：

[1] Oregon State Univ, Dept Phys, Corvallis, OR 97331 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2014年 / 118卷 / 19期

基金：

美国国家科学基金会;

关键词：

OPTICAL-TRANSITIONS; SPECTROSCOPY; TRANSISTORS;

D O I：

10.1021/jp502149c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We utilize photoconductivity spectroscopy to identify the unique chiral structure of individual carbon nanotubes (CNTs). Peaks in photoconductivity are measured throughout the visible and near-IR wavelength ranges. Photoconductivity peaks associated with individual CNTs are referenced against existing Rayleigh scattering measurements to uniquely identify chiral indices. We find close agreement between our assigned exciton resonances and the previously published exciton resonances. The typical net energy mismatch is <= 20 meV. By enabling chiral identification of CNTs after the completion of device fabrication, the technique offers a facile method for investigating relationships between CNT structure and electronic/optoelectronic properties.

引用

页码：9946 / 9950

页数：5

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