Molecular Nanoelectronics

Vuillaume, D.

doi:10.1109/jproc.2010.2063410

Cited by 47 publications

(19 citation statements)

References 168 publications

(210 reference statements)

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“…The top-down approach used to assemble current electronics will, in parts, be replaced by the bottom-up approach as can already be seen in molecular nano-electronic devices currently developed. 3 At this transition region between the bulk and the molecular level, fundamental understanding and, more importantly, predictability is required to achieve sufficient reliability and reproducibility for large scale-production of nanoelectronic devices. 2,4 Quantum chemistry aims for this and can describe the physical and chemical properties from the bulk to the molecular level.…”

Section: Introductionmentioning

confidence: 99%

Gas-phase structures of neutral silicon clusters

Haertelt

Lyon

Claes

et al. 2012

The Journal of Chemical Physics

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Vibrational spectra of neutral silicon clusters Si(n), in the size range of n = 6-10 and for n = 15, have been measured in the gas phase by two fundamentally different IR spectroscopic methods. Silicon clusters composed of 8, 9, and 15 atoms have been studied by IR multiple photon dissociation spectroscopy of a cluster-xenon complex, while clusters containing 6, 7, 9, and 10 atoms have been studied by a tunable IR-UV two-color ionization scheme. Comparison of both methods is possible for the Si(9) cluster. By using density functional theory, an identification of the experimentally observed neutral cluster structures is possible, and the effect of charge on the structure of neutrals and cations, which have been previously studied via IR multiple photon dissociation, can be investigated. Whereas the structures of small clusters are based on bipyramidal motifs, a trigonal prism as central unit is found in larger clusters. Bond weakening due to the loss of an electron leads to a major structural change between neutral and cationic Si(8).

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Section: Introductionmentioning

confidence: 99%

Gas-phase structures of neutral silicon clusters

Haertelt

Lyon

Claes

et al. 2012

The Journal of Chemical Physics

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“…Several approaches for the deposition of the top electrode have been used, and excellent reviews on this topic have been published [212][213][214][215][216]. However, despite intense investigations on the deposition of the top contact electrode onto monomolecular films a reliable control in the fabrication of molecular junctions remains rather limited.…”

Section: Deposition Of the Top Contact Electrodementioning

confidence: 99%

Nanofabrication techniques of highly organized monolayers sandwiched between two electrodes for molecular electronics

2014

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Molecular electronics [1,2] is a promising field of research based on the idea that a single molecule or two dimensional assemblies of molecules (monomolecular films) can work as wires, switches, rectifiers, etc. Molecules are the smallest functional units and therefore it is expected that the use of molecules will permit to catch up with the limits of miniaturization (MM: more Moore), with an increase in device density by a factor of several orders of magnitude compared to today's state of the art. At the same time due to quantum effects novel and remarkable properties of organic and organometallic compounds at the nanoscale devices will result in increased performance (MtM: more than Moore) together with the appearance of new functions not possible with conventional semiconductors, and also cheaper devices due to the non-dependence of expensive materials used today in CMOS (complementary metal-oxide semiconductor) technology such as hafnium oxide. Nowadays, the number of research groups from different disciplines of science contributing to molecular electronics is gradually growing, and this field is becoming of great scientific and technological interest [1,3-8]. Since the seminal work of Aviram and Ratner in 1974 who firstly suggested that a single molecule could function as a rectifier [9], molecules have been experimentally demonstrated to work as switches, molecular wires or rectifiers, and a new field of opportunities is opened due to the understanding of electron transport through single entities or assemblies of molecules and expansion towards work on molecular spintronics, vibronic effects, excitation of the molecular junction with polarized light, quantum interference and decoherence, molecular chirality, molecular stretching and distortion as well as work on thermoelectric response in molecular junctions.Abstract: It is expected that molecular electronics, i.e., the use of molecules as critical functional elements in electronic devices, will lead in the near future to an industrial exploitable novel technology, which will open new routes to high value-added electronic products. However, despite the enormous advances in this field several scientific and technological challenges should be surmounted before molecular electronics can be implemented in the market. Among these challenges are the fabrication of reliable, robust and uniform contacts between molecules and electrodes, the deposition of the second (top) contact electrode, and development of assembly strategies for precise placement of molecular materials within device structures. This review covers advances in nanofabrication techniques used for the assembly of monomolecular films onto conducting or semiconducting substrates as well as recent methods developed for the deposition of the top contact electrode highlighting the advantages and limitations of the several approaches used in the literature. This contribution also aims to define areas of outstanding challenges in the nanofabrication of monomolecular layers sandwiched between two electro...

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“…However, it is a challenging objective since several mechanisms can be involved. For example, the conductance through molecule junctions is very sensitive to atomic details of the molecule/electrode contact geometry, molecular conformation, as well as molecule‐molecule interactions . As a consequence, large number (hundreds or thousands) of conductance measurements and robust statistical analysis are mandatory.…”

Section: Introductionmentioning

confidence: 99%

Molecular Electronics: From Single‐Molecule to Large‐Area Devices

Vuillaume

2019

ChemPlusChem

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This Minireview focuses on conductance measurements on molecular junctions containing few tens of molecules, which are carried out by using two approaches: 1) conducting atomic force microscopy to study self‐assembled monolayers on metal surfaces, and 2) tiny molecular junctions made of metal nanodots (diameter <10 nm), covered by fewer than 100 molecules and studied by conducting atomic force microscopy. In particular, this latter approach has new results to be obtained, or to previous results to be revisited which are reviewed here: 1) how the electron‐transport properties of molecular junctions are modified by mechanical constraint, 2) the role of intermolecular interactions on the shape of conductance histograms of molecular junctions, and 3) the demonstration that a molecular diode can operate in the microwave regime up to 18 GHz.

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Molecular Nanoelectronics

Cited by 47 publications

References 168 publications

Gas-phase structures of neutral silicon clusters

Gas-phase structures of neutral silicon clusters

Nanofabrication techniques of highly organized monolayers sandwiched between two electrodes for molecular electronics

Molecular Electronics: From Single‐Molecule to Large‐Area Devices

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