Published October 31, 2011
| Published
Journal Article
Open
Semiconducting graphene nanoribbon retains band gap on amorphous or crystalline SiO_2
- Creators
- Hossain, M. Zubaer
Abstract
Electronic properties of a semiconducting armchair graphene nanoribbon on SiO_2 are examined using first-principles calculations and taking into account the van der Waals interaction. Unlike semiconducting carbon nanotubes, which exhibit variations in band gap on SiO_2, the nanoribbon is found to retain its band gap on SiO_2, regardless of the separation distance or the dielectric's surface type—crystalline or amorphous. The interfacial interaction leads to electron-transfer from the nanoribbon to the dielectric. Moreover, for crystalline SiO_2, the quantity of electron-transfer and the binding energy depend strongly on the type of surface termination and weakly on the binding sites.
Additional Information
© 2011 American Institute of Physics. Received 25 August 2011; accepted 10 October 2011; published online 31 October 2011. This work used the Extreme Science and Engineering Discovery Environment (XSEDE), which is supported by National Science Foundation grant number OCI-1053575.Attached Files
Published - Hossain2011p16414Appl_Phys_Lett.pdf
Files
Hossain2011p16414Appl_Phys_Lett.pdf
Files
(1.6 MB)
Name | Size | Download all |
---|---|---|
md5:5273cec1b09f3442c172862641b077d5
|
1.6 MB | Preview Download |
Additional details
- Eprint ID
- 28324
- Resolver ID
- CaltechAUTHORS:20111206-152029114
- OCI-1053575
- NSF
- Created
-
2011-12-06Created from EPrint's datestamp field
- Updated
-
2021-11-09Created from EPrint's last_modified field