Tuning of electrical characteristics in networked carbon nanotube field-effect transistors using thiolated molecules

被引:23
作者
Lee, Chun Wei
Zhang, Keke
Tantang, H.
Lohani, Anup
Mhaisalkar, S. G.
Li, Lain-Jong
Nagahiro, T.
Tamada, K.
Chen, Y.
机构
[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore
[2] Tokyo Inst Technol, Dept Elect Chem, Kanagawa 2268502, Japan
[3] Nanyang Technol Univ, Sch Chem & Biomol Engn, Singapore 639798, Singapore
关键词
D O I
10.1063/1.2772181
中图分类号
O59 [应用物理学];
学科分类号
摘要
The authors examine the effects of adsorption of four thiolated molecules (HS-C10H21, HS-C11H22OH, HS-C10H20COOH, and HS-C2H4C4F9) on the electrical characteristics of single-walled carbon nanotube network FETs (SNFETs). Work function of the electrodes was measured before and after molecule adsorption. Schottky barrier energy extraction for SNFETs was also performed and the results provide direct evidence that the device characteristics of SNFETs after SAM adsorption are altered primarily due to the change in energy-level alignment between the Au and SWNTs, which thus provides an effective methodology for the tuning and performance optimization of these devices in a controllable way. (C) 2007 American Institute of Physics.
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页数:3
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