Generic Approach to Modulate Conductivity and Coat Discontinuous Gate Dielectrics of Carbon Nanotubes
详细信息 查看全文
- 作者：Lei Fu ; Xianglong Li ; Yunqi Liu ; Zhimin Liu ; Lingchao Cao ; Dacheng Wei ; Yu Wang ; Gui Yu ; Wenping Hu ; Buxing Han
- 刊名：Journal of Physical Chemistry C
- 出版年：2007
- 出版时间：June 7, 2007
- 年：2007
- 卷：111
- 期：22
- 页码：8098 - 8104
- 全文大小：855K
- 年卷期：v.111,no.22(June 7, 2007)
- ISSN：1932-7455
文摘
Supercritical fluids in the presence of metal nitrate are used for the modulating conductivity of carbon nanotubes(CNTs). At the same time, CNTs are coated with discontinuous nanometer thin metal oxide dielectrics. Tovalidate the effect of modulation, we have made multiwalled CNTs (self-coating with gate dielectrics) transistorsusing electron beam lithography deposition technology and studied their electronic properties. In particular,the method appears promising to improve the performance of existing field-effect transistors consisting ofsingle-walled CNT networks, which display poor switching ratios in normal cases due to the coexistence ofmetallic and semiconducting tubes. Moreover, the mechanism of the multifarious morphology of a CNT/metal oxide has been discussed.