Fabrication of nanoscale C60 field-effect transistors with carbon nanotubes

Horiuchi, Kazunaga; Kato, Tomohiro; Hashii, Shinobu; Hashimoto, Akira; Sasaki, Takahiko; Aoki, Nobuyuki; Ochiai, Y.

doi:10.1063/1.1899251

Cited by 18 publications

(7 citation statements)

References 21 publications

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“…Apart from metal, FIB can also be used to cut off nanowires for nanogap electrodes. In 2005, Horiuchi et al used a focused Ga ion beam to cut multiwalled carbon nanotubes (MWCNTs) and gap widths of around 50 nm were demonstrated, with which a nanoscale C 60 field‐effect transistor has been constructed . However, the obtained nanogaps are of relatively large sizes and not suitable to connect most organic molecules.…”

Section: Fabrication Of Gated Nanogap Electrodesmentioning

confidence: 99%

“…In addition, compared to bulky metallic electrodes, using few layer graphene can potentially enhance the gating efficiency by shortening the distance between the molecular junction and the gate. Some of the fabrication methods used on metallic electrodes can also be used on carbon‐based materials for nanogap electrodes, such as FIB milling on CNTs for nanogap electrode fabrication, FEB induced sculpture of suspended graphene, and scanning probe based techniques . However, due the unique properties of carbon materials, some methods were specifically developed for carbon material nanogap electrode fabrication.…”

Section: Fabrication Of Gated Nanogap Electrodesmentioning

confidence: 99%

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Nanogap Electrodes towards Solid State Single‐Molecule Transistors

Cui

Dong

2015

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With the establishment of complementary metal-oxide-semiconductor (CMOS)-based integrated circuit technology, it has become more difficult to follow Moore's law to further downscale the size of electronic components. Devices based on various nanostructures were constructed to continue the trend in the minimization of electronics, and molecular devices are among the most promising candidates. Compared with other candidates, molecular devices show unique superiorities, and intensive studies on molecular devices have been carried out both experimentally and theoretically at the present time. Compared to two-terminal molecular devices, three-terminal devices, namely single-molecule transistors, show unique advantages both in fundamental research and application and are considered to be an essential part of integrated circuits based on molecular devices. However, it is very difficult to construct them using the traditional microfabrication techniques directly, thus new fabrication strategies are developed. This review aims to provide an exclusive way of manufacturing solid state gated nanogap electrodes, the foundation of constructing transistors of single or a few molecules. Such single-molecule transistors have the potential to be used to build integrated circuits.

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Section: Fabrication Of Gated Nanogap Electrodesmentioning

confidence: 99%

Section: Fabrication Of Gated Nanogap Electrodesmentioning

confidence: 99%

Nanogap Electrodes towards Solid State Single‐Molecule Transistors

Cui

Dong

2015

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“…5-20 nm) and the proximity effects of a FIB are much less than that of electron beam lithography, a FIB could be a reliable way to prepare nanogap electrodes with the advantages of maskless nanostructuring, good reproducibility, and high speed of the nanogap cutting. Ochiai et al [136] reported that by cutting a wire of a multiwalled carbon nanotube anchored by metal pads on a Si wafer with a focused Ga 2þ ion beam, nanogap electrodes with a separation of approximately 50 nm were obtained. By then integrating the nanogap electrodes as source-drain electrodes with C 60 as a semiconductor, excellent field-effect transistors were achieved.…”

Section: Focused Ion Beam and Oxidative Plasma Ablation For Nanogap Ementioning

confidence: 99%

Nanogap Electrodes

2009

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Nanogap electrodes (namely, a pair of electrodes with a nanometer gap) are fundamental building blocks for the fabrication of nanometer‐sized devices and circuits. They are also important tools for the examination of material properties at the nanometer scale, even at the molecular scale. In this review, the techniques for the fabrication of nanogap electrodes, the preparation of assembled devices based on the nanogap electrodes, and the potential application of these nanodevices for analysis of material properties are introduced. The history, the research status, and the prospects of nanogap electrodes are also discussed.

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“…In view of the previous arguments, this system could be regarded as an ideal testbed to investigate TVS. In addition, the employment of CNT electrodes [18][19][20] offers many advantages if compared with usual organic electrodes since they exhibit many advantages in comparison to ordinary metallic contacts: they show higher conductivity, 21 permit better contact to organic molecules, 20 and reduce the screening of the gate electric fields due their smaller size. 19 Furthermore, recent advances in nanofabrication techniques permit a precise control of the gap size in between the CNT leads, 22 which is crucial in the development of single-molecule junctions.…”

Section: Introductionmentioning

confidence: 99%

Electronic transport in oligo-para-phenylene junctions attached to carbon nanotube electrodes: Transition-voltage spectroscopy and chirality

Silva

Leal

et al. 2011

Phys. Rev. B

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We have investigated, by means of a nonequilibrium Green's function method coupled to density functional theory, the electronic transport properties of molecular junctions composed of oligo-para-phenylene (with two, three, four, and five phenyl rings) covalently bridging the gap between metallic carbon nanotubes electrodes. We have found that the current is strongly correlated to a purely geometrical chiral parameter, both on-resonance and off-resonance. The Fowler-Nordheim plot exhibits minima, V min , that occur whenever the tail of a resonant transmission peak enters in the bias window. This result corroborates the scenario in which the coherent transport model gives the correct interpretation to transition voltage spectroscopy (TVS). We have shown that V min corresponds to voltages where a negative differential resistance (NDR) occurs. The finding that V min corresponds to voltages that exhibit NDR, which can be explained only in single-molecule junctions within the coherent transport model, further confirms the applicability of such models to adequately interpret TVS. The fact that the electrodes are organic is at the origin of differences in the behavior of V min if compared to the case of molecular junctions with nonorganic contacts treated so far.

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Fabrication of nanoscale C60 field-effect transistors with carbon nanotubes

Cited by 18 publications

References 21 publications

Nanogap Electrodes towards Solid State Single‐Molecule Transistors

Nanogap Electrodes towards Solid State Single‐Molecule Transistors

Nanogap Electrodes

Electronic transport in oligo-para-phenylene junctions attached to carbon nanotube electrodes: Transition-voltage spectroscopy and chirality

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