Enrichment of Large-Diameter Semiconducting Single-Walled Carbon Nanotubes by Conjugated Polymer-Assisted Separation

Author:

Xie Piao1,Sun Yun1,Chen Chao1,Guo Shu-Yu1,Zhao Yiming1,Jiao Xinyu1,Hou Peng-Xiang1,Liu Chang1ORCID,Cheng Hui-Ming12

Affiliation:

1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China

2. Faculty of Materials Science and Engineering/Institute of Technology for Carbon Neutrality, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China

Abstract

Semiconducting single-walled carbon nanotubes (s-SWCNTs) with large diameters are highly desired in the construction of high performance optoelectronic devices. However, it is difficult to selectively prepare large-diameter s-SWCNTs since their structure and chemical stability are quite similar with their metallic counterparts. In this work, we use SWCNTs with large diameter as a raw material, conjugated polymer of regioregular poly-(3-dodecylthiophene) (rr-P3DDT) with long side chain as a wrapping agent to selectively separate large-diameter s-SWCNTs. It is found that s-SWCNTs with a diameter of ~1.9 nm are effectively enriched, which shows a clean surface. By using the sorted s-SWCNTs as a channel material, we constructed thin-film transistors showing charge-carrier mobilities higher than 10 cm2 V−1 s−1 and on/off ratios higher than 103.

Funder

Ministry of Science and Technology of China

National Natural Science Foundation of China

Liaoning Revitalization Talents Program

Basic Research Project of Natural Science Foundation of Shandong Province

Publisher

MDPI AG

Subject

General Materials Science,General Chemical Engineering

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