Laboratoire Léon Brillouin

UMR12 CEA-CNRS

Bât. 563 CEA Saclay

91191 Gif sur Yvette Cedex

France

llb-sec@cea.fr

Organic and molecular electronics
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With organic and molecular electronics, a data processing based on various types of nano-objects (molecules, biomolecules, nanoparticles, carbon nanotubes, graphene,...) is emerging.

This means developing:

  •  The synthesis of new molecules and new nano-objects
  •   Methods of chemical functionalization of nano-objects (graphene, NPs, nanotubes, C60) for the formation of hybrid materials with new or improved properties
  •   Assembly methods of nano-objects on surfaces
  •   Nanofabrication techniques to connect individual nano-objects
  •   Electronic transport measurements
  •   New operating strategies of the electronic properties for the implementation of new functions
  •   Theoretical efforts to model the studied devices and to propose new structures with original properties.

In the case illustrated here, one single molecule is connected to two electrodes spaced by 1 to 3 nm, the objectives are to master and understand the metal-molecule interface and the properties of the so positioned molecule. On this principle, single molecule LEDs have recently been studied: "Electroluminescence of a single polythiophene molecular wire suspended between the tip and the surface of a scanning tunneling microscope", © Guillaume Schull - IPCMS - CNRS / Université de Strasbourg.

 

Cross formed of two carbon nanotubes deposited on silica. The gray bands (150 nm width and height less than 1 nm) are "molecular Scotch tape" allowing the ordering of the nanotubes.

Three experimental topics in organic electronics are carried by the NIMBE/LICSEN team :

  • Carbon nanotubes are one example of elementary objects used in molecular electronics. The manufacture of devices and circuits involving carbon nanotubes requires control of their positioning on a surface and their interconnection. The self assembly of nanotubes on a surface locally functionalized chemically is a technique that allows the manufacture of elaborated circuits.
  • Printed electronics where grafting processes via organic molecules allows maunfacturing conductive circuits at very low cost (RFID chips, complex circuits, sub-micron conductive tracks...)
  • The organic spintronics, where it was shown that the magnetic decoupling of metal thin layers can be achieved with a single organic monolayer.

Finally, aging studies by irradiaton of organic components (MADIR team of CIMAP, Caen) complete the research in this area.

 

Last update : 02/25 2016 (500)

25-06-2009
Single molecule magnets grafted on carbon nanotubes : the first of its kind has been realized at the Molecular Chemistry and Materials Institute in Orsay (CNRS/University of Paris 11) in collaboration with the Institut Lavoisier de Versailles (CNRS/Université de Versailles ... More »
 
Tuning nanotubes' absorption wave length Carbon nanotubes possess exceptional electronic and mechanical properties, they appear to be very promising materials for electronic and sensing, polymer composites, energy conversion, or biological applications. However, fabrication of ... More »
Carbon nanotube based HF transistors Thanks to their exceptional electronic properties, carbon nanotubes are a particularly well suited material for high frequency devices. Numerous predictions foresee that the cut off frequency of optimized carbon nanotube transistors would surpass ... More »
Thanks to the amazing selfassembly properties of DNA, structures of exquisite complexity can be built just in designing proper DNA sequences (DNA origami is the best example). They can be used in the further design of complex systems involving other nanoobjects, or for the preparation of ... More »

 

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