Type

Journal Article

Authors

Justin D. Holmes
Michael A. Morris
Nikolay Petkov
Colm O'Dwyer
Colm Glynn
Tandra Ghoshal
Subhajit Biswas
Olan Lotty

Subjects

Physics

Topics
effluent treatment silver germanium size distribution narrow size distributions diameter distributions growth substrates metal assisted etchings nanoparticles nanowires semiconductor nanowire coalescence templating method crystalline quality supercritical fluids particle depositions

Containing the catalysts: diameter controlled Ge nanowire growth (2013)

Abstract Sub-20 nm diameter Ge nanowires with narrow size distributions were grown from Ag nanoparticle seeds in a supercritical fluid (SCF) growth process. The mean Ge nanowire diameter and size distribution was shown to be dependent upon Ag nanoparticle coalescence, using both spin-coating and a block copolymer (BCP) templating method for particle deposition. The introduction of a metal assisted etching (MAE) processing step in order to "sink" the Ag seeds into the growth substrate, prior to nanowire growth, was shown to dramatically decrease the mean nanowire diameter from 27.7 to 14.4 nm and to narrow the diameter distributions from 22.2 to 6.8 nm. Hence, our BCP-MAE approach is a viable route for controlling the diameters of semiconductor nanowires whilst also ensuring a narrow size distribution. The MAE step in the process was found to have no detrimental effect on the length or crystalline quality of the Ge nanowires synthesised.
Collections Ireland -> University College Cork -> Materials Chemistry and Analysis Group
Ireland -> University College Cork -> Applied Nanoscience Group - Journal Articles
Ireland -> University College Cork -> College of Science, Engineering and Food Science
Ireland -> University College Cork -> Tyndall National Institute
Ireland -> University College Cork -> Applied Nanoscience Group
Ireland -> University College Cork -> Micro-Nanoelectronics Centre
Ireland -> University College Cork -> Chemistry
Ireland -> University College Cork -> Materials Chemistry and Analysis Group - Journal articles
Ireland -> University College Cork -> Chemistry - Journal Articles
Ireland -> University College Cork -> Research Institutes and Centres

Full list of authors on original publication

Justin D. Holmes, Michael A. Morris, Nikolay Petkov, Colm O'Dwyer, Colm Glynn, Tandra Ghoshal, Subhajit Biswas, Olan Lotty

Experts in our system

1
Justin D. Holmes
University College Cork
Total Publications: 182
 
2
Michael A. Morris
University College Cork
Total Publications: 121
 
3
Nikolay Petkov
University College Cork
Total Publications: 41
 
4
Colm O'Dwyer
University College Cork
Total Publications: 121
 
5
Colm Glynn
University College Cork
Total Publications: 19
 
6
Tandra Ghoshal
University College Cork
Total Publications: 19
 
7
Subhajit Biswas
University College Cork
Total Publications: 26
 
8
Olan Lotty
University College Cork
Total Publications: 6