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arXiv 1411.6000cond-mat.mes-hall
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合成的多壁MoS2纳米管和纳米管场效应晶体管

Synthesized multiwall MoS2 nanotube and nanoribbon field-effect transistors

Sara Fathipour, Maja Remskar, Ana Varlec, Arvind Ajoy, Rusen Yan, Suresh Vishwanath, Wan Sik Hwang, Huili, Xing, Debdeep Jena, Alan Seabaugh

摘要:

我们报告的合成多壁二硫化钼纳米管(NT)和纳米硅(NR)场效应晶体管(FET)的制造和表征。MoS 2 NT和NR通过化学运输生长,使用碘作为运输剂。拉曼光谱证实该材料为NT、NR和薄片形式的明确的MoS 2。在电测量后,使用透射电子显微镜观察器械的截面,并将其用于解释电测量结果,从而估计电流密度。NT和NR FET表现出n型行为,导通/截止电流比超过10^3,在VDS = 0.3 V和VBG = 1 V时的电流密度分别为1.02 μA/μ m和0.79 μA/μm。在78 μW的激发光功率和488 nm波长下,对MoS 2 NT FET进行了光电流测试,得到了几十nA的短路光电流,对应的响应度为460 μA/W。一个长沟道晶体管模型被用来模拟的MoS 2 NT和NR FET的共源特性,并被证明是与测量数据一致。

英文摘要:

We report on the fabrication and characterization of synthesized multiwall MoS2 nanotube (NT) and nanoribbon (NR) field-effect transistors (FETs). The MoS2 NTs and NRs were grown by chemical transport, using iodine as a transport agent. Raman spectroscopy confirms the material as unambiguously MoS2 in NT, NR, and flake forms. Transmission electron microscopy was used to observe cross sections of the devices after electrical measurements and these were used in the interpretation of the electrical measurements allowing estimation of the current density. The NT and NR FETs demonstrate n-type behavior, with ON/OFF current ratios exceeding 10^3, and with current densities of 1.02 μA/μm, and 0.79 μA/μm at VDS = 0.3 V and VBG = 1 V, respectively. Photocurrent measurements conducted on a MoS2 NT FET, revealed short-circuit photocurrent of tens of nanoamps under an excitation optical power of 78 μW and 488 nm wavelength, which corresponds to a responsivity of 460 μA/W. A long channel transistor model was used to model the common-source characteristics of MoS2 NT and NR FETs and was shown to be consistent with the measured data.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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