The influence of contact metal in carbon nanotube transistor
接触电极的功函数对基于碳纳米管构建的场效应管的影响

We have fabricated p-type and n-type carbon nanotube transistors (CNTFETs) by using high and low work-function metals Pt and Al as contact electrodes, respectively. The band structures indicate that the work functions of contact metals play an important role in operation mechanism of CNTFETs. We can obtain fine-tuning of Schottky barrier heights for p- and n-channel conductions by changing the contact metals. These results can be explained by taking into account the work functions of the contact metals.