Type

Journal Article

Authors

Enda McGlynn
Martin O. Henry
Weimin Chen
Irina Buyanova
Greg Hughes
Conor Byrne
Joseph Cullen
Ciaran Gray

Subjects

Chemistry

Topics
nanotechnology photonics zno photoluminescence isotopic enrichment semiconductors spectrum analysis materials nanostructures crystallography

Growth of isotopically enriched ZnO nanorods of excellent optical quality (2015)

Abstract We have produced isotopically enriched ZnO nanorods using Zn-enriched ZnO source powder by vapour phase transport on silicon substrates buffer-coated with unenriched ZnO seed layers. SEM and XRD data confirm successful growth of high quality, dense, c-axis aligned nanorods over a substantial surface area. Raman data show a shift of >1 cm-1 in the peak position of the Raman scattered peaks due to the E2low and E2high phonon modes when the Zn isotope is changed from 64Zn to 68Zn, consistent with previous work, thus confirming successful isotopic enrichment. SIMS data provides additional confirmation of enrichment. The optical quality (as determined by photoluminescence feature intensity and linewidth) is excellent. Samples with Zn isotopic enrichment ranging from 64ZnO to 68ZnO display a shift in recombination energy of the bound excitons at the band edge (3.34 - 3.37 eV) of ~ 0.6 meV. This blue shift is also consistent with previously published data, further confirming both the excellent optical quality and successful isotopic substitution of ZnO nanorods using this relatively simple growth method.
Collections Ireland -> Dublin City University -> Publication Type = Article
Ireland -> Dublin City University -> Status = Published
Ireland -> Dublin City University -> Subject = Physical Sciences: Photonics
Ireland -> Dublin City University -> Subject = Physical Sciences: Spectrum analysis
Ireland -> Dublin City University -> Subject = Physical Sciences: Nanotechnology
Ireland -> Dublin City University -> DCU Faculties and Centres = Research Initiatives and Centres: National Centre for Plasma Science and Technology (NCPST)
Ireland -> Dublin City University -> DCU Faculties and Centres = DCU Faculties and Schools: Faculty of Science and Health: School of Physical Sciences
Ireland -> Dublin City University -> Subject = Physical Sciences: Semiconductors
Ireland -> Dublin City University -> Subject = Engineering: Materials
Ireland -> Dublin City University -> Subject = Physical Sciences: Crystallography

Full list of authors on original publication

Enda McGlynn, Martin O. Henry, Weimin Chen, Irina Buyanova, Greg Hughes, Conor Byrne, Joseph Cullen, Ciaran Gray

Experts in our system

1
Enda McGlynn
Dublin City University
Total Publications: 80
 
2
Martin O. Henry
Dublin City University
Total Publications: 35
 
3
Greg Hughes
Dublin City University
Total Publications: 29
 
4
Conor Byrne
Dublin City University
Total Publications: 11
 
5
J. Cullen
Dublin City University
Total Publications: 13
 
6
Ciaran Gray
Dublin City University
Total Publications: 14