Kyung-Sang Cho

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A wide parameter space is spanned to check the innuence of numerical parameters on self-organized jets in rotating, turbulent shallow-water ows. It is found that, even in harsh physical (strongly ageostrophic) and numerical ((ltered, hyperviscous, high-resolution) environments, the basic morphogenesis of steady jets, qualitatively reeecting the Rhines(More)
We investigated the band gap of SiZnSnO (SZTO) with different Si contents. Band gap engineering of SZTO is explained by the evolution of the electronic structure, such as changes in the band edge states and band gap. Using ultraviolet photoelectron spectroscopy (UPS), it was verified that Si atoms can modify the band gap of SZTO thin films. Carrier(More)
We examine exciton recombination, energy-, and charge transfer in multilayer CdS/ZnS quantum dots (QDs) on silver plasmonic resonators using photoluminescence (PL) and excitation spectroscopy along with kinetic modeling and simulations. The exciton dynamics including all the processes are strongly affected by the separation distance between QDs and silver(More)
Due to its direct and narrow band gap, high chemical stability, and high Seebeck coefficient (1800 μVK(-1)), antimony selenide (Sb2Se3) has many potential applications, such as in photovoltaic devices, thermoelectric devices, and solar cells. However, research on the Sb2Se3 materials has been limited by its low electrical conductivity in bulk state. To(More)
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