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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

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Single-molecule functionality in electronic components based on orbital resonances.

Mickael L Perrin¹, Rienk Eelkema, Jos Thijssen

¹Kavli Institute of Nanoscience, Delft University of Technology, Lorentzweg 1, 2628 CJ Delft, The Netherlands. H.S.J.vanderZant@tudelft.nl.

Physical Chemistry Chemical Physics : PCCP

|June 9, 2020

Summary

This summary is machine-generated.

Researchers developed novel single-molecule diodes using multi-site molecules, achieving high rectification ratios through intrinsic molecular properties. This breakthrough offers a new pathway for efficient molecular electronic devices.

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Area of Science:

Molecular electronics
Nanotechnology
Synthetic chemistry

Background:

Single-molecule devices are advancing due to synthetic chemistry and technology.
Single-molecule diodes are key components, with ongoing research focused on improving rectification ratios.
Current efforts involve molecule-intrinsic properties and electrode coupling engineering.

Purpose of the Study:

To review experimental approaches for single-molecule rectification.
To present novel multi-site molecules for enhanced rectification.
To establish design guidelines for molecular diodes.

Main Methods:

Overview of literature on single-molecule rectification.
Theoretical framework for multi-site molecules.
Fabrication and measurement of two-site molecule devices.
Two- and three-terminal mechanically controllable break junction (MCBJ) measurements.

Main Results:

Multi-site molecules yield high rectification ratios via intrinsic mechanisms.
Tunable on-site energies influence device behavior (negative differential conductance or rectification).
Demonstrated highly-efficient rectifiers based on chemical design.

Conclusions:

Multi-site molecules offer a promising strategy for high-performance single-molecule diodes.
Chemical tunability of on-site energies is crucial for device function.
Theoretical rectification ratios exceeding one million are achievable.