Synthesis and Characterization of ZnO Nanoparticles


Nanoparticles of ZnO were synthesized using a sonochemical technique. Sonochemistry arises from an acoustic cavitation phenomenon, that is, the formation, growth and implosive collapse of bubbles in a liquid medium. The ultraviolet photoluminescence (PL) studies of the samples showed a strong PL intensity and a significant blue shift relative to the PL of the bulk. Shifts up to 70 meV were observed and attributed to a confinement effect. Scanning electron microscopy indicated roughly spherical particles, ~160 nm in diameter. However, nano-platelets and rods were observed in transmission electron micrographs. Preliminary electrical measurements indicated a highly resistive nature of the nanoparticulate material.

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Authors would like to thank Dr. John B. Posthill, Research Triangle Institute, for the interpretation of the transmission electron micrographs.

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Correspondence to I. U. Abhulimen.

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Abhulimen, I.U., Chen, X.B., Morrison, J.L. et al. Synthesis and Characterization of ZnO Nanoparticles. MRS Online Proceedings Library 829, 196–200 (2004).

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