Near-Field Optical Identification of Metallic and Semiconducting Single-Walled Carbon Nanotubes

王乐乐; 吕博赛; 高强; 陈佳俊; 应哲; 邓奥林; 史志文

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Near-Field Optical Identification of Metallic and Semiconducting Single-Walled Carbon Nanotubes

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Single-walled carbon nanotubes(SWCNTs),due to their outstanding electrical and optical properties,are expected to have extensive applications,such as in transparent conductive fims and ultra-small field-effect transistors(FETs).However,those applications can only be best realized with pure metallic or pure semiconducting SWCNTs.Hence,identifying and separating metallic from semiconducting SWCNTs in as-grown samples are crucial.In addition,knowledge of the type of an SWCNT is also important for further exploring its new properties in fundamental science.Here we report employing scanning near-field optical microscopy(SNOM)as a direct and simple method to identify metallic and semiconducting SWCNTs on SiO2/Si substrates.Metallic and semiconducting SWCNTs show distinct near-field optical responses because the metallic tubes support plasmons whereas the semiconducting tubes do not.The reliability of this method is verified using FET testing and Rayleigh scattering spectroscopy.Our result demonstrates that the SNOM technique provides a reliable,simple,noninvasive and in situ method to distinguish between metallic and semiconducting SWCNTs.

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《中国物理快报：英文版》 |2020年第2期|70-73|共4页
作者
王乐乐; 吕博赛; 高强; 陈佳俊; 应哲; 邓奥林; 史志文;
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作者单位

Key Laboratory of Artificial Structures and Quantum Control(Ministry of Education);

Shenyang National Laboratory for Materials Science;

School of Physics and Astronomy;

Shanghai Jiao Tong University;

Shanghai 200240;

Collaborative Innovation Center of Advanced Microstructures;

Nanjing 210093;

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原文格式 PDF
正文语种 chi
中图分类碳C;
关键词
method; separating; transparent;

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1. States of Excitons and Linear Optical Spectra in Metallic Single-Walled Carbon Nanotubes [J] . 于桂丽 ,李桂臣 ,贾永雷 . 中国物理快报：英文版 . 2014,第9期
2. Selective growth of semiconducting single-walled carbon nanotubes solely from carbon monoxide [J] . Xue Zhao ,Ningfei Gao ,Zeyao Zhang . 纳米研究：英文版 . 2023,第11期
3. Combined Effect of Uniaxial Strain and Magnetic Field on the Exciton States in Semiconducting Single-Walled Carbon Nanotubes [J] . 张馨玥 ,于桂丽 ,王丽华 . 中国物理快报：英文版 . 2018,第8期
4. Dielectrophoretic assembly of semiconducting single-walled carbon nanotube transistor [J] . . 中国有色金属学报：英文版 . 2011,第z1期
5. The Study of Electronic Density of States and Optical Properties of ZnO Nanotube by First-Principles [C] . Qingbo WANG ,Cui ZHOU . 第三届国际信息技术与管理科学学术研讨会 . 2011
6. Photochemical Surface Functionalization of Single-walled Carbon Nanotubes and Diamond Powder [A] . Mirza Nadeem Ahmad . 2010

Near-Field Optical Identification of Metallic and Semiconducting Single-Walled Carbon Nanotubes

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