喷墨打印构建碳纳米管薄膜晶体管及其电性能的研究

doi:10.7517/j.issn.1674-0475.2018.03.005

摘要/Abstract

摘要： 本文利用聚[（9，9-二辛基芴-2，7-二基）-共-（1，4-苯并2，1-3-噻二唑）]（PFO-BT）、聚[N，N'-二（2-辛基十二烷基）-异靛蓝-共-（9，9-二辛基芴基-2，7-二基）]（PFⅡD）、聚[氮-（9-十七烷基）咔唑]（PCZ）、聚[N，N'-二（2-辛基十二烷基）-异靛蓝-共-N-[1-（辛基壬基）-咔唑基-2，7-二基]（PCZⅡD），尝试从本实验室用电弧放电法制备的单壁碳纳米管中分离纯化出高纯的半导体碳纳米管，并通过喷墨打印方式在氧化铪基体表面构建碳纳米管薄膜晶体管器件。研究表明这4种聚合物都能从自制单壁碳纳米管中选择性分离半导体碳纳米管，其中分子量和共轭单元更大的PCZ和PCZⅡD表现出更高的分离效率。通过对基底进行氧等离子体处理和优化打印工艺，得到了性能较好的印刷碳纳米管薄膜晶体管器件，器件的开关比为1.2×10⁵~8×10⁵，迁移率可达到5.3~6.8 cm²·V^-1·s^-1。表明自制的单壁碳纳米管可用于构建性能优越的印刷薄膜晶体管器件，还有望应用于高密度集成电路和新型显示所需的驱动电路等。

关键词: 喷墨打印, 半导体碳纳米管, 薄膜晶体管

Abstract: In this work, we demonstrated that arc discharge carbon nanotubes produced by our lab could be acted as the channel materials after sorted by polymers. It was found that PFO-BT, PFⅡD, PCZ and PCZⅡD showed the ability to selectively separate sc-SWCNTs from pristine arc discharge carbon nanotubes produced by our lab. Among them, PCZ and PCZⅡD with the higher molecular weight and larger conjugated units showed higher efficiency to separate sc-SWCNTs. As-prepared sc-SWCNT inks could be used to directly construct thin film transistors by inkjet printer, and printed SWCNT TFTs showed good electrical properties with on/off ratio of 8×10⁵ and effective mobility of 6.8 cm²·V^-1·s^-1.

Key words: inkjet printing, semiconducting carbon nanotube, thin-film transistor

刘停停, 朱天翔, 邵琳, 赵新洛, 赵建文, 崔铮. 喷墨打印构建碳纳米管薄膜晶体管及其电性能的研究[J]. 影像科学与光化学, 2018, 36(3): 245-253.

LIU Tingting, ZHU Tianxiang, SHAO Lin, ZHAO Xinluo, ZHAO Jianwen, CUI Zheng. Fabrication and Electrical Properties of Printed Carbon Nanotube Thin Film Transistors (TFTs) Based on Self-made Carbon Nanotubes[J]. Imaging Science and Photochemistry, 2018, 36(3): 245-253.

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