Projects Synthesis Materials Fabrication Devices Characterization Theory
This year we have nearly 30 projects covering a wide range of nanoscience, including facile synthesis of organic and inorganic nanowires and nanostructures, novel fabrication routes, building of functional bioarchitectures, nanostructured devices and nanowire applications. Please browse the menu (hover on a group and click on the project of choice) to view brief overviews of our projects.
Comparative study of optical properties of ZnO nanowires as a function of Oxygen Content
In collaboration with Seung-Nam Cha (SAIT), we are investigating the optical properties of ZnO nanowires as a function of the oxygen content. ZnO nanowires are synthesized by chemical vapor deposition (CVD) and photoluminescence spectra are analyzed to understand the crystal defects in the nanowires which relate to the oxygen content. We expect that it is possible to control the optical properties by varying the amount of oxygen content for high performance ZnO based optoelectronic devices.

FESEM image of ZnO nanowires on sapphire and photoluminescence spectra of ZnO nanowires showing the effect of oxygen concentration on the ZnO optical properties

[1] Suok Lee, Seung-Nam Cha, and Dae Joon Kang, “Comparative Study of ZnO Nanowires Growth using Au Catalysts in Terms of Preparation Condition of Catalytic Materials”, KPS ,2007
[2] Suok Lee, Seungnam Cha, Kyoungho Park, and Dae Joon Kang, “Investigation of Optical Properties of ZnO Nanowires with Different Oxygen Contents”, The 5th Korea-China workshop on Nanotubes and Nanowires, 2008.