The structure, particle morphology, optical and magnetic properties of ZnO, ZnS and ZnO-ZnS nanoparticles prepared by the sol-gel method are reported. ZnO and ZnS were combined at room temperature by an ex situ synthetic route to prepare ZnO-ZnS nanocomposites. The nanocomposites exhibited particle morphology different from that of ZnO and ZnS nanoparticles. The ZnO and ZnS nanoparticles exhibited quantum confinement as inferred from the widening of their respective bandgap energies. The electron paramagnetic resonance data provided evidence for the existence of magnetic clusters near the surface, electron to nuclei interactions and defect states. The ZnO-ZnS nanocomposites exhibited tunable emission that was dependent on the ratio of ZnO to ZnS. These composites were evaluated for application in different types of light emitting devices.
Reference:
Raleaooa, P.V., Roodt, A., Mhlongo, G.H., Motaung, D.E., Kroon, R.E. and Ntwaeaborwa, O.M. 2017. Luminescent, magnetic and optical properties of ZnO-ZnS nanocomposites. Physica B: Condensed Matter, vol 507, pp 13-20
Raleaooa, P., Roodt, A., Mhlongo, G. H., Motaung, D. E., Kroon, R., & Ntwaeaborwa, O. (2017). Luminescent, magnetic and optical properties of ZnO-ZnS nanocomposites. http://hdl.handle.net/10204/10234
Raleaooa, PV, A Roodt, Gugu H Mhlongo, David E Motaung, RE Kroon, and OM Ntwaeaborwa "Luminescent, magnetic and optical properties of ZnO-ZnS nanocomposites." (2017) http://hdl.handle.net/10204/10234
Raleaooa P, Roodt A, Mhlongo GH, Motaung DE, Kroon R, Ntwaeaborwa O. Luminescent, magnetic and optical properties of ZnO-ZnS nanocomposites. 2017; http://hdl.handle.net/10204/10234.
Copyright: 2017 Elsevier. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website. The definitive version of the work is published in Physica B: Condensed Matter, vol 507, pp 13-20
