Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > A new technique may speed the development of molecular electronics

Abstract:
Often, things can be improved by a little 'contamination.' Steel, for example is iron with a bit of carbon mixed in. To produce materials for modern electronics, small amounts of impurities are introduced into silicon - a process called doping. It is these impurities that enable electricity to flow through the semiconductor and allow designers to control the electronic properties of the material.

A new technique may speed the development of molecular electronics

Israel | Posted on July 25th, 2007

Scientists at the Weizmann Institute of Science, together with colleagues from the U.S.A., recently succeeded in being the first to implement doping in the field of molecular electronics - the development of electronic components made of single layers of organic (carbon-based) molecules. Such components might be inexpensive, biodegradable, versatile and easy to manipulate. The main problem with molecular electronics, however, is that the organic materials must first be made sufficiently pure and then, ways must be found to successfully dope these somewhat delicate systems.

This is what Prof. David Cahen and postdoctoral fellow Dr. Oliver Seitz of the Weizmann Institute's Material and Interfaces Department, together with Drs. Ayelet Vilan and Hagai Cohen from the Chemical Research Support Unit and Prof. Antoine Kahn from Princeton University did. They showed that such 'contamination' is indeed possible, after they succeeded in purifying the molecular layer to such an extent that the remaining impurities did not affect the system's electrical behavior.

The scientists doped the 'clean' monolayers by irradiating the surface with UV light or weak electron beams, changing chemical bonds between the carbon atoms that make up the molecular layer. These bonds ultimately influenced electronic transport through the molecules.

This achievement was recently described in the Journal of the American Chemical Society (JACS). The researchers foresee that this method may enable scientists and electronics engineers to substantially broaden the use of these organic monolayers in the field of nanoelectronics. Dr. Seitz: 'If I am permitted to dream a little, it could be that this method will allow us to create types of electronics that are different, and maybe even more environmentally friendly, than the standard ones that are available today.'

Prof. David Cahen's research is supported by the Nancy and Stephen Grand Research Center for Sensors and Security; the Philip M. Klutznick Fund for Research; Mr. Yehuda Bronicki, Israel; Mr. and Mrs. Yossie Hollander, Israel; and the Wolfson Family Charitable Trust. Prof. Cahen is the incumbent of the Rowland Schaefer Professorial Chair in Energy Research.

####

About Weizmann Institute of Science
The Weizmann Institute of Science in Rehovot, Israel, is one of the world's top-ranking multidisciplinary research institutions. Noted for its wide-ranging exploration of the natural and exact sciences, the Institute is home to 2,600 scientists, students, technicians and supporting staff. Institute research efforts include the search for new ways of fighting disease and hunger, examining leading questions in mathematics and computer science, probing the physics of matter and the universe, creating novel materials and developing new strategies for protecting the environment.

For more information, please click here

Contacts:
Publications and Media Relations Department
Phone : 972-8-9343856 / 52
Fax : 972-8-9344132
E-Mail :

Copyright © Weizmann Institute of Science

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

Chip Technology

Electronic circuits with reconfigurable pathways closer to reality January 26th, 2015

The latest fashion: Graphene edges can be tailor-made: Rice University theory shows it should be possible to tune material's properties January 24th, 2015

New method to generate arbitrary optical pulses January 21st, 2015

New signal amplification process set to transform communications, imaging, computing: UC San Diego researchers discover a mechanism to amplify signals in optoelectronic systems that is far more efficient than standard processes January 21st, 2015

Nanoelectronics

Electronic circuits with reconfigurable pathways closer to reality January 26th, 2015

Rice-sized laser, powered one electron at a time, bodes well for quantum computing January 15th, 2015

Rapid journey through a crystal lattice: Researchers measure how fast electrons move through single atomic layers January 14th, 2015

A new step towards using graphene in electronic applications January 14th, 2015

Discoveries

Visualizing interacting electrons in a molecule: Scientists at Aalto University and the University of Zurich have succeeded in directly imaging how electrons interact within a single molecule January 26th, 2015

Electronic circuits with reconfigurable pathways closer to reality January 26th, 2015

Nanoparticles Increase Durability of Concrete Decorations in Cold Areas January 26th, 2015

Iranian Researchers Boost Solar Cells Efficiency Using Anti-Aggregates January 26th, 2015

Announcements

Nanoparticles Increase Durability of Concrete Decorations in Cold Areas January 26th, 2015

Iranian Researchers Boost Solar Cells Efficiency Using Anti-Aggregates January 26th, 2015

Detection of Heavy Metals in Samples with Naked Eye January 26th, 2015

Engineering self-assembling amyloid fibers January 26th, 2015

NanoNews-Digest
The latest news from around the world, FREE



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE