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Dynamics of Light Emission in CdMnS Nanoparticles

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Godlewski M., Yatsunenko S., Drozdowicz-Tomsia K., Goldys E., Phillips M., Klar P., Heimbrodt W.

Acta Physica Polonica A

2005

vol. 108

issue 4

681-688

We demonstrate coexistence of slow and fast components of photoluminescence decay of the Mn^{2+} intra-shell emission in nanoparticles of CdMnS. We explain the observed decrease in PL lifetime of the Mn^{2+} intra-shell transition by high efficiency of spin dependent magnetic interactions between localized spins of Mn^{2+} ions and free carriers. This mechanism is enhanced in nanostructures, but it is also present in bulk samples.

Growth and Characterization of ZnO Nanoparticles

100%

Tomaszewska-Grzęda A., Łojkowski W., Godlewski M., Yatsunenko S., Drozdowicz-Tomsia K., Goldys E., Phillips M.

Acta Physica Polonica A

2005

vol. 108

issue 5

897-902

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.

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2 Acta Physica Polonica A

2 2005

2 Drozdowicz-Tomsia K.

2 Godlewski M.

2 Goldys E.

2 Phillips M.

2 Yatsunenko S.

1 Heimbrodt W.

1 Klar P.

1 Tomaszewska-Grzęda A.

1 Łojkowski W.

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Dynamics of Light Emission in CdMnS Nanoparticles

Growth and Characterization of ZnO Nanoparticles