Energy analysis of field emitted electrons from a ZnO tetrapod

TitleEnergy analysis of field emitted electrons from a ZnO tetrapod
Publication TypeJournal Article
Year of Publication2007
AuthorsAl-Tabbakh, AA, More, MA, Joag, DS, Ramgir, NS, Mulla, IS, Pillai, VK
JournalApplied Physics Letters
PaginationArticle No. 162102
Date PublishedAPR
Type of ArticleArticle

The experimental total energy distribution (TED) of the field emitted electrons from a single pod of a ZnO tetrapod has been obtained, exhibiting a two-peak feature. The energy difference between the two peaks in the TED is found to be nearly equal to the band gap of the bulk ZnO. The results show that field emitted electrons originate from both the conduction and valence bands. The peak position dependence on the applied voltage has also been observed. In the present case, the size of the ZnO tetrapod is not small enough to reflect the quantum confinement effects.

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Physical and Materials Chemistry