Home > Press > Growing graphene better for future electronics
Abstract:
Graphene is a two-dimensional crystal with extremely high carrier mobility. Techniques are available to synthesize wafer-scale graphene film, but the wafers are polycrystalline with typical grain size of tens of microns or smaller. The grain boundaries degrade material performances. Therefore, it is very important to develop strategy to enlarge the grain size.
Growing graphene better for future electronics
Germany | Posted on October 18th, 2012
Now, a Chinese research group have developed a new process which enables synthesis of graphene grains up to ~1.2 mm, the largest on a Cu substrate. The researchers used polystyrene as solid carbon source because of its relative weak C-H bonds compared to common gaseous sources.Process optimization enabled a nucleation density as low as ~100 nuclei/cm2, and continuous increase in carbon supply and the gas flow rate drives continuous growth. The graphene grains show high crystalline quality with high mobility of 5000-8000 cm2V-1s-1. The researchers are confident that their work will benefit application of graphene in electronics.
####
For more information, please click here
Copyright © Wiley-VCH Materials Science Journals
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:
Link to the original paper on Wiley Online Library:
News and information
Nano-needles for cells May 25th, 2013
How do cold ions slide May 24th, 2013
Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013
Glowing Plant Releases Maker Kit, Enabling Anyone to Make a Glowing Plant at Home: Glowing Plant seeks funds via crowdfunding and raises almost $400,000 May 23rd, 2013
Graphene
Innovation could bring flexible solar cells, transistors, displays May 22nd, 2013
Add boron for better batteries: Rice University theorists say graphene-boron mix shows promise for lithium-ion batteries May 17th, 2013
Seville will host the 14th Trends in Nanotechnology International Conference (TNT 2013): Call for abstracts announced May 14th, 2013
Agilent Technologies New AFM/Raman Spectroscopy System Provides Nanoscale Material Identification and Analysis May 13th, 2013
Chip Technology
Researchers Stitch Defects into the World’s Thinnest Semiconductor May 22nd, 2013
Whirlpools on the Nanoscale Could Multiply Magnetic Memory: At the Advanced Light Source, Berkeley Lab scientists join an international team to control spin orientation in magnetic nanodisks May 22nd, 2013
Imec and GLOBALFOUNDRIES collaborate to advance high-density memory technology: STT-MRAM offers enhanced performance and scalability for embedded and standalone applications May 21st, 2013
Penn engineers' nanoantennas improve infrared sensing May 20th, 2013
Discoveries
Nano-needles for cells May 25th, 2013
How do cold ions slide May 24th, 2013
Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013
Atomic-Scale Investigations Solve Key Puzzle of LED Efficiency: MIT and Brookhaven Lab scientists use electron microscopy imaging techniques to settle a solid-state controversy and raise new experimental possibilities May 22nd, 2013
Announcements
Nano-needles for cells May 25th, 2013
How do cold ions slide May 24th, 2013
Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013
Glowing Plant Releases Maker Kit, Enabling Anyone to Make a Glowing Plant at Home: Glowing Plant seeks funds via crowdfunding and raises almost $400,000 May 23rd, 2013