Abstract
Colloidal quantum dots (QDs) with a ZnO core were synthesized
with subsequent surface passivation by MgO. The photo-enhancement
effect of the near band-edge photoluminescence (PL) in ZnO nanocrystals,
dispersed in ethanol, is investigated by observing changes in the
optical properties after ultraviolet (UV) exposure. Finally, the operation
as a light-emitting device (LED) was demonstrated experimentally for
these ZnO-based quantum dots (QDs). The results indicate that this
type of QDs might enable the development of electroluminescent UV
sources in the near future.
© 2015 IEEE
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