Phimega Group Post #62

Researchers take another step towards organic electronics
posted by soliton at Fri, 25 Jun 2010 - 13:37:44

Although organic materials have the potential to revolutionize a wide
range of high-tech products, such as computer displays and solar
cells, they lack the well-ordered chemical structures of organic
materials, so this potential is difficult to put into practice.
However, a team of researchers led by Dr Dmitrii Perepichka (McGill
University, Canada) and Dr Federico Rosei (Institut national de la
recherche scientifique, Canada) recently published research that
offers a solution to this problem. The team has effectively discovered
a way to order the molecules in PEDOT, a conducting polymer with high
industrial significance.

Although Dr Perepichka stressed that the research is not directly
applicable to current commercial products, he commented: =93It's a well
known principle that the number of transistors in a computer chip
doubles every two years, but we are now reaching the physical limit.
By using molecular materials instead of silicon semiconductor, we
could one day build transistors that are ten times smaller than what
currently exists.=94

The team used a novel technique called =91surface-confined
polymerization=92 with an inorganic material (a copper crystal) as a
template. When molecules are dropped onto the crystal, the crystal
provokes a chemical reaction to create a conducting polymer. Using a
scanning probe microscope that enabled them to view the surface at
atomic resolution, the researchers discovered that the polymers
imitated the ordered structure of the crystal surface. So far the team
has only managed to produce this reaction in one dimension, yielding a
string or line of molecules. The next step will be to add a second
dimension in order to make continuous sheets (=91organic graphite=92) or
electronic circuits.

Source:
http://www.elektor.com/news/researchers-take-another-step-towards-organic.1=
399886.lynkx
http://www.mcgill.ca/newsroom/news/item/?item_id=3D163963

--=20
soliton
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