Growth and Characterization of ZnO Nanoparticles

A. Tomaszewska-Grzędaa, W. Łojkowskia, M. Godlewskib,c, S. Yatsunenkob, K. Drozdowicz-Tomsiad, E.M. Goldysd and M.R. Phillipse aInstitute of High Pressure Physics (Unipress), Polish Academy of Sciences, Warsaw, Poland bInstitute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland cDept. of Mathematics and Natural Sciences College of Science, Cardinal S. Wyszyński University, Warsaw, Poland dDiv. of Information and Communication Sciences, Macquarie University, Sydney, Australia eMicrostructural Analysis Unit, UTS, Sydney, Australia

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Received: 4 06 2005;

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.

DOI: 10.12693/APhysPolA.108.897 PACS numbers:81.07.Wx, 68.37.Hk, 78.55.Et, 78.47.+p