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Journal of Nanoparticle Research

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01.08.2009 | Research Paper

Well-crystallized zinc oxide quantum dots with narrow size distribution

verfasst von: Keigo Suzuki, Masashi Inoguchi, Keisuke Kageyama, Hiroshi Takagi, Yukio Sakabe

Erschienen in: Journal of Nanoparticle Research | Ausgabe 6/2009

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Abstract

In this study, pulsed laser ablation, online annealing, and following size classification using a differential mobility analyzer (DMA) were employed to fabricate quantum dots (QDs) of zinc oxide (ZnO). The irregularly shaped ZnO particles were obtained at annealing temperature less than 873 K, which gradually transformed into spherical QDs with increasing the annealing temperature. Finally, ZnO QDs with narrow size distribution having spherical shapes were successfully obtained at temperatures above 1173 K under the DMA classification at a nominal size of 10 nm. TEM observation demonstrated that the ZnO QDs obtained by this process were well-crystallized single crystallites with a wurtzite structure. Further, ZnO QDs with average sizes in the range of 4.8–8.1 nm were successfully fabricated by reducing the specified sizes of DMA. These features of the fabricated ZnO QDs are favorable for investigation of intrinsic quantum size effect in ZnO.

Vorheriger Artikel Photocatalytic activity of nanostructured TiO2 films produced by supersonic cluster beam deposition

Nächster Artikel Crystal structure mediates mode of cell death in TiO2 nanotoxicity

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Titel: Well-crystallized zinc oxide quantum dots with narrow size distribution
verfasst von: Keigo Suzuki
Masashi Inoguchi
Keisuke Kageyama
Hiroshi Takagi
Yukio Sakabe
Publikationsdatum: 01.08.2009
Verlag: Springer Netherlands
Erschienen in: Journal of Nanoparticle Research / Ausgabe 6/2009
Print ISSN: 1388-0764
Elektronische ISSN: 1572-896X
DOI: https://doi.org/10.1007/s11051-008-9521-x

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