共 41 条
Thin Film Nanotube Transistors Based on Self-Assembled, Aligned, Semiconducting Carbon Nanotube Arrays
被引:446
作者:
Engel, Michael
[1
]
Small, Joshua P.
[1
]
Steiner, Mathias
[1
]
Freitag, Marcus
[1
]
Green, Alexander A.
[2
,3
]
Hersam, Mark C.
[2
,3
]
Avouris, Phaedon
[1
]
机构:
[1] IBM Corp, Thomas J Watson Res Ctr, Yorktown Hts, NY 10598 USA
[2] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL 60208 USA
[3] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA
来源:
基金:
美国国家科学基金会;
关键词:
thin film;
self-assembly;
carbon nanotube;
alignment;
field-effect transistor;
opto-electronic;
D O I:
10.1021/nn800708w
中图分类号:
O6 [化学];
学科分类号:
0703 ;
摘要:
Thin film transistors (TFTs) are now poised to revolutionize the display, sensor, and flexible electronics markets. However, there is a limited choice of channel materials compatible with low-temperature processing. This has inhibited the fabrication of high electrical performance TFTs. Single-walled carbon nanotubes (CNTs) have very high mobilities and can be solution-processed, making thin film CNT-based TFTs a natural direction for exploration. The two main challenges facing CNT-TFTs are the difficulty of placing and aligning CNTs over large areas and low on/off current ratios due to admixture of metallic nanotubes. Here, we report the self-assembly and self-alignment of CNTs from solution into micron-wide strips that form regular arrays of dense and highly aligned CNT films covering the entire chip, which is ideally suitable for device fabrication. The films are formed from pre-separated, 99% purely semiconducting CNTs and, as a result, the CNT-TFTs exhibit simultaneously high drive currents and large on/off current ratios. Moreover, they deliver strong photocurrents and are also both photo- and electroluminescent.
引用
收藏
页码:2445 / 2452
页数:8
相关论文