TITLE

Field-emission studies on thin films of zinc oxide nanowires

AUTHOR(S)
Jo, S. H.; Lao, J. Y.; Ren, Z. F.; Farrer, R. A.; Baldacchini, T.; Fourkas, J. T.
PUB. DATE
December 2003
SOURCE
Applied Physics Letters;12/8/2003, Vol. 83 Issue 23, p4821
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Studies on field emission (FE) from thin films of zinc oxide (ZnO) nanowires found that both the turn-on voltage and emission current density depend on the areal density of nanowires. The density of ZnO nanowires is controlled by the gold (Au) nanoparticle density deposited on the silicon substrates. The growth of ZnO nanowires was achieved by the thermal evaporation/condensation method. It is shown that the same screening effect observed on carbon nanotube field emitters also affects the FE from thin films of ZnO nanowires. Thin films with the lowest areal density of ZnO nanowires showed much better FE characteristics, comparable to that of carbon nanotubes. More importantly, the FE characteristics of ZnO nanowire thin film were further improved with annealing in hydrogen. © 2003 American Institute of Physics.
ACCESSION #
11567899

 

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