http://www.researchonline.mq.edu.au/vital/access/services/Feed ${session.getAttribute("locale")} 5 http://www.researchonline.mq.edu.au/vital/access/manager/Repository/mq:4450 In this work we evaluate structural and optical properties of ZnO nanoparticles grown by wet chemistry method. Light emission properties of these nanoparticles are studied with cathodoluminescence and micro-photoluminescence. Even at the room temperature excitonic emission is well resolved, due to high exciton binding energy of ZnO. Decay kinetics of photoluminescence emissions and efficiency of inter-nanoparticles energy migration is evaluated from maps of in-plane variations of photoluminescence decay times measured in microphotoluminescence setup. 2010-08-02T00:51:59.782Z ]]> http://www.researchonline.mq.edu.au/vital/access/manager/Repository/mq:4453 We demonstrate coexistence of slow and fast components of photoluminescence decay of the Mn²⁺ intra-shell emission in nanoparticles of CdMnS. We explain the observed decrease in PL lifetime of the Mn²⁺ intra-shell transition by high efficiency of spin dependent magnetic interactions between localized spins of Mn²⁺ ions and free carriers. This mechanism is enhanced in nanostructures, but it is also present in bulk samples. 2010-08-02T00:51:56.111Z ]]>