TITLE

Valence band and core-level analysis of highly luminescent ZnO nanocrystals for designing ultrafast optical sensors

AUTHOR(S)
Joshi, Amish G.; Sahai, Sonal; Gandhi, Namita; Krishna, Y. G. Radha; Haranath, D.
PUB. DATE
March 2010
SOURCE
Applied Physics Letters;3/22/2010, Vol. 96 Issue 12, p123102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The detailed surface analysis such as survey scan, core-level, and valence band spectra of highly luminescent ZnO:Na nanocrystals were studied using the x-ray photoelectron spectroscopy to establish the performed presence of Na+ ions. The observed increase in band gap from 3.30 (bulk) to 4.16 eV (nano), is attributed to the quantum confinement of the motion of electron and holes in all three directions. The photoluminescence and decay measurements have complemented and supported our study to design an efficient and ultrafast responsive optical sensing device.
ACCESSION #
48837270

 

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