Carbon nanotube FETs decorated by gold nanoparticles: Electrical properties and mechanism

Author

Wei, Qinqin ; Guo, Ao ; Chai, Yang ; Jin, Zhong ; Li, Yan ; Shi, Zujin ; Chan, Philip C.H. ; Fu, Yunyi ; Huang, Ru ; Zhang, Xing

Author_Institution

Dept. of Microelectron., Peking Univ., Beijing, China

fYear

2010

Firstpage

1259

Lastpage

1261

Abstract

The electrical transport behavior of carbon nanotube field-effect transistors (CNT-FETs) decorated with gold nanoparticles (NPs) has been investigated. After decoration with Au NPs, the I_on/I_off ratios of nanotube FETs decrease and some of the p-type devices even change into metallic ones. The Au NPs decrease the contact resistances between the CNTs and metal electrodes, and accordingly increase the on-state electric currents of the CNT-FETs. The possible mechanisms for the effects of NPs on electrical transport properties of the CNTs have been analyzed qualitatively. Our investigations are closely linked with some promising applications of carbon nanotube hybrid materials in nanoelectronics.

Keywords

carbon nanotubes; contact resistance; field effect transistors; gold; nanoparticles; nanotube devices; CNT-FET; carbon nanotube FET; contact resistances; electrical transport properties; gold nanoparticles; metal electrodes; on-state electric currents; p-type devices; Carbon nanotubes; Electrodes; FETs; Gold; Logic gates; Nanoparticles;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology (ICSICT), 2010 10th IEEE International Conference on

Conference_Location

Shanghai

Print_ISBN

978-1-4244-5797-7

Type

conf

DOI

10.1109/ICSICT.2010.5667626

Filename

5667626