New Semiconductor Production Method Grows Circuits on Gold Nanoparticles
November 30, 2012 11:55 AM
Technique is moving towards producing solar cells within the next two years
Will circuits of the future be grown on gold? That's what
, Professor of Semiconductor Physics at
, Sweden believes. He's devised an unusual process for semiconductor fabrication that's turning heads in the chipmaking world.
He recalls in
a press release
, "When I first suggested the idea of getting rid of the [silicon] substrate, people around me said 'you're out of your mind, Lars; that would never work'. When we tested the principle in one of our converted ovens at 400°C, the results were better than we could have dreamt of."
Most circuits are grown via techniques like vapor deposition with crystals of different chemistry being deposited on a wafer substrate of polycrystalline silicon. Professor Samuelson's method also uses gas deposition, but it throws out the traditional substrate, instead using
suspended in the flowing gas. Nanoscopic semiconductor structures grow via deposition on the gold nanoparticle. The finished structures then float into later ovens for curing.
"The basic idea was to let nanoparticles of gold serve as a substrate from which the semiconductors grow", Professor Samuelson describes, "This means that the accepted concepts really were turned upside down!"
Nanoparticles grow through ovens, growing nanowires via vapor deposition.
[Image Source: Nature]
Currently, the method is growing standard conductive nanowires --
tiny strands of semiconductor
that can be mere atoms thick -- but they hope to eventually extend the method to produce special kinds of nanowires, such as wires that act as p-n diodes.
At this point you may be thinking, "Great, but how are these nanowires going to form a circuit?"
That's an excellent question, and admittedly a drawback to this novel form of fabrication of circuit components -- after formation, the completed components must be somehow
self-assembled into a structure
. Professor Samuelson is currently working with fellow Lund University researchers to use a type of
called "aerotaxy", which prompts nanorods to undergo directed self-assembly into circuit structures.
The university hopes to produce solar panels with the new technique within two years.
[Image Source: EnergyInformative]
The university says that the process could one day be commercialized to form "energy-saving solar cells, LEDs, batteries and other electrical equipment that is now an integrated part of our lives."
Professor Samuelson hopes to have a prototype of the solar-cell circuit production process done in the next two years, and then move on to other circuit types.
His work has been
in a paper in the prestigious peer-reviewed journal
. Other authors on the paper include Magnus Heurlin, David Lindgren, Martin Ek, Reine Wallenberg, and Knut Deppert -- all Lund University researchers or faculty -- and Martin Magnusson of Sol Voltaics AB, a solar startup that hopes to help Professor Samuelson commercialize his technique.
Lund University [press release]
"We don't know how to make a $500 computer that's not a piece of junk." -- Apple CEO Steve Jobs
Scientists Cook Up 1-Atom Transistor, 12-Atom Magnetic Storage
February 20, 2012, 7:20 PM
Self Assembling Nanoscale Ropes Developed from Synthetic Polymers
January 20, 2011, 1:37 PM
UCLA Gold Nanoparticle Superstructure Blows Away Cancer Cells
May 26, 2010, 11:01 AM
Breakthrough Allows LED Lighting to be Processed on Silicon at Great Savings
July 21, 2008, 12:13 PM
ASUS RT-AC5300 – Ultimate Game & 4K Streaming
April 18, 2017, 7:45 AM
HP Envy 17t Touch – All-Day Battery for All-Day Portability
April 13, 2017, 6:29 AM
ASUS Chromebook Flip C302CA – Your Versatile Flexible Companion
April 11, 2017, 6:14 AM
What is the best Processor for gaming? AMD or Intel
April 2, 2017, 6:30 AM
Arris Motorola SB 6141 – High Range of Compatibility and Internet Speeds
March 28, 2017, 7:55 AM
Comparison – Samsung Galaxy TabPro S Vs Microsoft Surface Pro 4
March 21, 2017, 7:40 AM
Most Popular Articles
Surface Pro 5 Rumors - New Release Date and Price
April 22, 2017, 6:45 AM
SAPPHIRE PULSE Radeon RX 580 8GD5 – Great Value for the Money
April 20, 2017, 7:47 AM
Dell Inspiron 17 7000 – A Premium Laptop featuring 7th Gen Intel Core i7 in a 2-in-1 Frame.
April 19, 2017, 7:45 AM
Tesla will announce electric lorry in September
April 19, 2017, 6:20 AM
Meet the Smartphone with four cameras - Alcatel Flashphone
April 5, 2017, 11:20 AM
Latest Blog Posts
Google Co-Founder, Sergey Brin has an Airship
Apr 26, 2017, 6:43 AM
Samsung Galaxy S8 and S8 Plus – Lots of Glass that Breaks Easily
Apr 25, 2017, 7:20 AM
Samsung Galaxy S8 – Warning for Pet Owners
Apr 24, 2017, 5:59 AM
Sound Bars and the Costs?
Apr 23, 2017, 6:30 AM
Link your Brain to Your Computer – In Four Years…Maybe
Apr 22, 2017, 7:03 AM
Google Home can now identify users by their voice.
Apr 21, 2017, 7:15 AM
Amazon Lex – Now Available for Developers.
Apr 20, 2017, 6:58 AM
You can now use Instagram offline on your Android Smartphone
Apr 19, 2017, 8:00 AM
Now you can livestream to YouTube from your mobile device.
Apr 18, 2017, 8:05 AM
Google Home – Is It a Spy Device?
Apr 17, 2017, 7:30 AM
Apple added to self –driving test permit list
Apr 15, 2017, 6:21 AM
Project Scorpio – Coming on June 11
Apr 14, 2017, 6:20 AM
Looks Like Samsung Has Been Forgiven.
Apr 13, 2017, 6:50 AM
United Airlines - Blasted on China’s Social Network and the Stock Market
Apr 12, 2017, 6:50 AM
Amazon's Third-Party Sellers Hacked
Apr 11, 2017, 6:25 AM
Microsoft Surface Pro5 Details Revealed
Apr 9, 2017, 6:41 AM
Own An Android Phone? Then you could be hacked over Wi-FI
Apr 7, 2017, 6:47 AM
Apple confirms iOS 10.3 bug and its effect on iCloud Services
Apr 6, 2017, 6:30 AM
Apple Rolls Out New Version of Apple Music
Apr 5, 2017, 10:35 AM
Apple in the News
Apr 4, 2017, 9:03 AM
Apple iPhones Will Soon Feature Graphics Chips Designed BY Apple
Apr 3, 2017, 6:23 AM
More Blog Posts
Copyright 2017 DailyTech LLC. -
Terms, Conditions & Privacy Information