BROWSE

Related Researcher

Author's Photo

Park, Youngsin
Center for Superfunctional Materials
Research Interests

ITEM VIEW & DOWNLOAD

Surface Effect Induced Optical Bandgap Shrinkage in GaN Nanotubes

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
Surface Effect Induced Optical Bandgap Shrinkage in GaN Nanotubes
Author
Park, YoungsinLee, GeunsikHolmes, Mark J.Chan, Christopher C. S.Reid, Benjamin P. L.Alexander-Webber, Jack A.Nicholas, Robin J.Taylor, Robert A.Kim, Kwang S.Han, Sang W.Yang, WoochulJo, YKim, JIm, Hyunsik
Issue Date
2015-07
Publisher
AMER CHEMICAL SOC
Citation
NANO LETTERS, v.15, no.7, pp.4472 - 4476
Abstract
We investigate nontrivial surface effects on the optical properties of self-assembled crystalline GaN nanotubes grown on Si substrates. The excitonic emission is observed to redshift by ∼100 meV with respect to that of bulk GaN. We find that the conduction band edge is mainly dominated by surface atoms, and that a larger number of surface atoms for the tube is likely to increase the bandwidth, thus reducing the optical bandgap. The experimental findings can have important impacts in the understanding of the role of surfaces in nanostructured semiconductors with an enhanced surface/volume ratio.
URI
https://scholarworks.unist.ac.kr/handle/201301/13123
URL
http://pubs.acs.org/doi/abs/10.1021/acs.nanolett.5b00924
DOI
10.1021/acs.nanolett.5b00924
ISSN
1530-6984
Appears in Collections:
CHM_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU