Papers by Author: Byung Teak Lee

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Authors: Veeramuthu Vaithianathan, Jung Ho Je, Byung Teak Lee, Sang Sub Kim
Abstract: Growth behavior of Mn-doped ZnO thin films (Zn1-xMnxO) onAl2O3 (0001) substrates by pulsed laser deposition was investigated as a function of Mn content (0.00≤x≤0.35) mainly using synchrotron x-ray diffraction. We found that a small amount of Mn doping (x=0.05) significantly improves the crystalline quality, and also leads to a singly oriented film. The superior epitaxial growth of the film with an optimum Mn content seems to be associated with its microstructural evolution.
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Authors: N.J. Kim, S.Y. Lee, G.K. Lee, J.H. Moon, Byung Teak Lee
Abstract: Inductively coupled plasma reactive ion etching of Ge doped silica glasses and SiON was investigated, using C2F6- and NF3-based gas mixtures. Mesas with smooth surfaces and vertical sidewalls were obtained, with a maximum etch rate of about 310nm/min in the case of C2F6 RIE of Ge-SiO2 and 280 nm/min in the case of SiON. The NF3 plasma yielded slightly higher etch rate, although sloped sidewalls were obtained. Results of the X-ray photoelectron spectroscopy showed little contamination on the etched surfaces.
503
Authors: Chang Jun Yoo, Yeon A Shim, Jong Ha Moon, Sang Sub Kim, Byung Teak Lee, Jin Hyeok Kim
489
Authors: Jae-Kil Han, Sung Min Choi, Ik Hyun Oh, Fumio Saito, Byung Teak Lee
Abstract: TiO2(1-.ZrO2. (.=- 0.2, 0.4, 0.6 and 0.8) composite powders having a homogeneous distribution and nanocrystalline were successfully synthesized by sol-gel process using titanium iso-propoxide as precursor. The particle sizes of TiO2-ZrO2 powders calcined at 600°C were measured ranging from 10nm to 19nm by XRD and TEM. For the comparison of photocatalytic activity, TiO2-ZrO2 composite powders were tested in the degradation of phenol and the photoreduction of inorganic pollutants. The degradation of phenol increased with increase the content of anatase TiO2 phase.
289
Authors: Y.H. Seo, K.C. Kim, H.W. Shim, Kee Suk Nahm, Eun Kyung Suh, H.J. Lee, Y.G. Hwang, D.-K. Kim, Byung Teak Lee
199
Authors: K.H. Jung, Nam Ihn Cho, J.H. Lee, Shou Jie Yang, C.K. Kim, Byung Teak Lee, Kyung Hwa Rim, Nam Kyun Kim, Eun Dong Kim
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