TITLE

Injection of carriers from a ZnO nanostructured shell to a ZnS based microsphere core

AUTHOR(S)
Sung Il Ahn; Seong Eui Lee; Yong-Hoon Cho; Gi Ryoung Kim; Song-Mei Li; Kyung Cheol Choi; Won Hee Lee
PUB. DATE
July 2009
SOURCE
Applied Physics Letters;7/13/2009, Vol. 95 Issue 2, p022108
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
ZnO nanostructures were synthesized on a microsphere ZnS:Cu,Cl (ZC) with various optical emission bands. Using an electroluminescence (EL) device with a semiliquid type of active layer, the carrier injection phenomenon through the nanostructure was observed. The EL from ZnO nanorods on the cubic ZC and the ZnO plate on the hexagonal ZC showed a nonlinear voltage-color characteristic and deep blue color, respectively, as explained by the carrier injection through the ZnO nanostructures. Both carrier injection cases appear to have been caused by the lowered band-gap energy at the boundary and by the structural factors that focused the applied electric field.
ACCESSION #
43277364

 

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