单轴应变下自由悬浮碳纳米管的光电流特性
Photocurrent Properties of Freely Suspended Carbon Nanotubes under Uniaxial Strain
摘要：
研究了单壁碳纳米管（CNTs）的光电流特性与单轴应变的关系。我们观察到，在低应变，碳纳米管的光电流信号增加的应变，而大应变，信号下降，分别。我们解释的非单调行为的叠加的影响的单轴应变的电阻率的碳纳米管和碳纳米管和金属接触之间的肖特基接触所造成的影响。
英文摘要：
The photocurrent properties of freely suspended single-walled carbon nanotubes (CNTs) are investigated as a function of uniaxial strain. We observe that at low strain, the photocurrent signal of the CNTs increases for increasing strain, while for large strain, the signal decreases, respectively. We interpret the non-monotonous behavior by a superposition of the influence of the uniaxial strain on the resistivity of the CNTs and the effects caused by Schottky contacts between the CNTs and the metal contacts.
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