Adsorption-induced conversion of the carbon nanotube field effect transistor from ambipolar to unipolar behavior
Adsorption-induced conversion of the carbon nanotube field effect transistor from ambipolar to unipolar behavior
复制标题
吸附诱导碳纳米管场效应晶体管从双极行为转变为单极行为
DOI：
10.1063/1.1869548
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发表时间：
2005
影响因子：
4
通讯作者：
W. Park
中科院分区：
文献类型：
--
作者：
Donghun Kang;N. Park;Jae;E. Bae;Ju;Ju;W. Park
我们借由环境空气对奈米碳管场效电晶体的影响，探讨双极性至单极极性的转变。观察到双壁纳米管场效应晶体管的单极输运特性及其从双极特性的转变。我们认为，吸附的氧分子，其最低的未占分子轨道状态周围的中间间隙的碳纳米管，可以抑制电子通道的形成，从而导致在单极传输行为。
We investigate ambipolar to unipolar transition by the effect of ambient air on the carbon nanotube field-effect transistor. A unipolar transport property of the double-walled nanotube field-effect transistor and its conversion from ambipolar behavior are observed. We suggest that adsorptions of oxygen molecules, whose lowest-unoccupied-molecular-orbital state is around the midgap of the carbon nanotube, could suppress the electron channel formation and, consequently, result in the unipolar transport behavior.