Current-induced organic molecule–silicon bond breaking: consequences for molecular devices

Patitsas, S. N.; Lopinski, Gregory P.; Hulko, O.; Moffatt, Douglas J.; Wolkow, Robert A.

doi:10.1016/s0039-6028(00)00468-4

Cited by 64 publications

(68 citation statements)

References 35 publications

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“…As a concluding remark, this review has not dealt with the use of a semiconducting electrode in single molecule electronic devices. Notice that several STM studies on charge transport through organic monolayers and isolated molecules on the semiconducting electrode (e.g., silicon) have shown the fascinating results, [207][208][209] and that Vilan et al recently reviewed siliconbased molecular junctions. [ 210 ] …”

Section: Discussionmentioning

confidence: 99%

Single Molecule Electronic Devices

2011

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Single molecule electronic devices in which individual molecules are utilized as active electronic components constitute a promising approach for the ultimate miniaturization and integration of electronic devices in nanotechnology through the bottom-up strategy. Thus, the ability to understand, control, and exploit charge transport at the level of single molecules has become a long-standing desire of scientists and engineers from different disciplines for various potential device applications. Indeed, a study on charge transport through single molecules attached to metallic electrodes is a very challenging task, but rapid advances have been made in recent years. This review article focuses on experimental aspects of electronic devices made with single molecules, with a primary focus on the characterization and manipulation of charge transport in this regime.

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Section: Discussionmentioning

confidence: 99%

Single Molecule Electronic Devices

2011

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“…Also possible future applications would appear to be more likely with ensembles of molecules than with single molecules. The fascinating scanning tunneling microscopy (STM) studies on transport across organic monolayers and isolated molecules on Si, [10,[26][27][28] are outside the scope of this report.…”

Section: Why Molecular Monolayers? Single Versus Many Molecule (Ensemmentioning

confidence: 99%

Molecules on Si: Electronics with Chemistry

et al. 2009

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Basic scientific interest in using a semiconducting electrode in molecule‐based electronics arises from the rich electrostatic landscape presented by semiconductor interfaces. Technological interest rests on the promise that combining existing semiconductor (primarily Si) electronics with (mostly organic) molecules will result in a whole that is larger than the sum of its parts. Such a hybrid approach appears presently particularly relevant for sensors and photovoltaics. Semiconductors, especially Si, present an important experimental test‐bed for assessing electronic transport behavior of molecules, because they allow varying the critical interface energetics without, to a first approximation, altering the interfacial chemistry. To investigate semiconductor‐molecule electronics we need reproducible, high‐yield preparations of samples that allow reliable and reproducible data collection. Only in that way can we explore how the molecule/electrode interfaces affect or even dictate charge transport, which may then provide a basis for models with predictive power.To consider these issues and questions we will, in this Progress Report, review junctions based on direct bonding of molecules to oxide‐free Si. describe the possible charge transport mechanisms across such interfaces and evaluate in how far they can be quantified. investigate to what extent imperfections in the monolayer are important for transport across the monolayer. revisit the concept of energy levels in such hybrid systems.

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“…[7][8][9][10][11][12][13][14][15][16][17] Compared to metal surfaces, Si(111)-(7ϫ7) exhibits a diversity of reactive sites and is expected to have a rich surface chemistry. In one unit cell, there are various Si atoms with dangling bonds ͑dbs͒, including adatoms in the first layer, rest atoms in the second layer, and corner holes in the fourth layer.…”

Section: Introductionmentioning

confidence: 99%

Dissociative adsorption of pyrrole on Si(111)-(7×7)

Yuan

Chen

Wang

et al. 2003

The Journal of Chemical Physics

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Articles you may be interested inAdsorption and thermal decomposition of acetic acid on Si ( 111 ) 7 × 7 studied by vibrational electron energy loss spectroscopy J. Chem. Phys. 132, 174702 (2010) Pyrrole adsorption on Si(111)-(7ϫ7) has been investigated using high-resolution electron energy loss spectroscopy ͑HREELS͒, thermal desorption spectroscopy, scanning tunneling microscopy ͑STM͒, and theoretical calculations. Compared to physisorbed pyrrole, chemisorption leads to the appearance of N-Si and Si-H vibrational features, together with the absence of N-H stretching mode. This clearly demonstrates the dissociative nature of pyrrole chemically binding on Si(111)-(7ϫ7) through the breakage of N-H bond. Based on STM results, the resulting fragments of pyrrolyl and H atom are proposed to bind with an adatom and an adjacent rest atom, respectively. The STM images further reveal that the adsorption is site selective. The faulted center adatoms are most favored, followed by unfaulted center adatoms, faulted corner adatoms, and unfaulted corner adatoms. In addition, the chainlike pattern of reacted adatoms was observed, implying the possible existence of attractive interaction between adsorbed pyrrolyl and the precursor state. Theoretical calculation confirms that the dissociative adsorption with pyrrolyl bonded to an adatom and H atom to an adjacent rest atom is energetically favored compared to the associative cycloaddition involving the two ␣-carbon atoms of pyrrole and an adatom-rest atom pair.

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Current-induced organic molecule–silicon bond breaking: consequences for molecular devices

Cited by 64 publications

References 35 publications

Single Molecule Electronic Devices

Single Molecule Electronic Devices

Molecules on Si: Electronics with Chemistry

Dissociative adsorption of pyrrole on Si(111)-(7×7)

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