Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/6078
Title: Structural and photoluminescence properties of ZnO nanoparticles on silicon oxide
Author: Giannakopoulos, K.
Boukos, N.
Travlos, A.
Monteiro, T.
Soares, M.J.
Peres, M.
Neves, A.
Carmo, M.C.
Keywords: Self assembled ZnO nanoparticles
Optical properties
EELS
Issue Date: Jan-2007
Publisher: Springer-Verlag
Abstract: Isolated, self assembled ZnO nanoparticles are grown in two steps: by the electron beam evaporation of Zn on oxidised silicon wafers, during which isolated Zn nanodots are grown, and a subsequent annealing in oxygen that results in the desired ZnO nanodots. Low temperature PL measurements of the ZnO nanodots show that the near band edge part of the spectra is dominated by a zero phonon line near 3.36 eV which is an overlap of two emitting lines near 3.363 eV and 3.367 eV. Characterization by TEM and EELS shows that the nanoparticles are zinc oxide single crystals grown with their c-axis perpendicular to the substrate; their distribution, size and crystallinity depend on the deposition parameters of zinc and the growth substrate. We discuss the effect of these parameters on the morphology of the resulting material. Our approach demonstrates a simple method for the growth of high purity isolated ZnO nanodots of similar sizes, distributed uniformly on a large surface.
Peer review: yes
URI: http://hdl.handle.net/10773/6078
DOI: 10.1007/s00339-007-3957-1
ISSN: 0947-8396
Appears in Collections:FIS - Artigos
I3N - Artigos

Files in This Item:
File Description SizeFormat 
APLA.pdfversão pdf do editor350 kBAdobe PDF    Request a copy


FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Degois 

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