Ultra-thin films containing zinc oxide and polystyrene were prepared by sol-gel mixing and spincoating onto silicon substrate. Photoluminescent measurements were recorded following irradiation at 325 nm. We observed passivation of shallow defect states around 3.1 eV bandgap via confinement. Time-resolved photoluminescence plots suggest a significant time dependence of emission intensity related to photodegradation of the polymer matrix.
"Synthesis and Characterization of Zinc-‐Oxide/Polystyrene Nanocomposite Thin Films,"
Macalester Journal of Physics and Astronomy: Vol. 1
, Article 7.
Available at: http://digitalcommons.macalester.edu/mjpa/vol1/iss1/7