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35. Ultrahigh Breakdown Field in Gallium (III) Oxide Dielectric Structure Fabricated by Novel Aerosol Deposition Method.

Author

Lee, Jun‐Woo, Won, Jong Ho, Kim, Woosup, Jeon, Jwa‐Bin, Cho, Myung‐Yeon, Kim, Sunghoon, Kim, Minkyung, Park, Chulhwan, Shin, Weon Ho, Won, Kanghee, Koo, Sang‐Mo, and Oh, Jong‐Min

Subjects
OXYGEN vacancy, POWER semiconductors, PERMITTIVITY, HEAT treatment, STRAY currents
Abstract

With the increasing demand for modern high‐voltage electronic devices in electric vehicles and renewable‐energy systems, power semiconductor devices with high breakdown fields are becoming essential. β‐Gallium oxide (Ga2O3), which has a theoretical breakdown field of 8 MV cm−1, is being studied as a next‐generation power‐switch material. However, realizing a breakdown field close to this theoretical value remains challenging. In this study, an aerosol deposition‐manufactured Ga2O3 film boasting an extremely high breakdown field, achieved through thickness optimization, heat treatment, and a unique nozzle‐tilting method, is developed. This study explores the effect of oxygen vacancies on the dielectric constant, breakdown field, and microstructure of Ga2O3 films. Through these methods, Ga2O3 films with a denser (98.88%) and uniform surface, made less affected by oxygen vacancies through nozzle tilting and post‐annealing at 800 °C, are produced, resulting in appropriate dielectric constants (9.3 at 10 kHz), low leakage currents (5.8 × 10−11 A cm−2 at 20 kV cm−1), and a very high breakdown field of 5.5 MV cm−1. The results of this study suggest that aerosol‐deposited Ga2O3 layers have great potential to enable power switches with reliable switching. [ABSTRACT FROM AUTHOR]

Published
2024
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46. Contour Detection Method of 3D Fish Using a Local Kernel Regression Method

Author

Oh, Jong Min, Kim, Sung Rak, Kim, Sung Won, Jeong, Nam Soo, Shin, Min Saeng, Kim, Hak Kyeong, Kim, Sang Bong, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Liang, Qilian, Series Editor, Martin, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Zelinka, Ivan, editor, Brandstetter, Pavel, editor, Trong Dao, Tran, editor, Hoang Duy, Vo, editor, and Kim, Sang Bong, editor

Published
2020
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47. Visual Servoing Controller Design Based on Barrier Lyapunov Function for a Picking System

Author

Oh, Jong Min, Rantung, Jotje, Kim, Sung Rak, Jeong, Sang Kwun, Kim, Hak Kyeong, Oh, Sea June, Kim, Sang Bong, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Liang, Qilian, Series Editor, Martin, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zhang, Junjie James, Series Editor, Zelinka, Ivan, editor, Brandstetter, Pavel, editor, Trong Dao, Tran, editor, Hoang Duy, Vo, editor, and Kim, Sang Bong, editor

Published
2020
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48. CEO Restricted Stock, Incentives, and Corporate Innovations*.

Author

Boli, Yi and Oh, Jong‐Min

Abstract

We study the relation between CEO restricted stock, CEO incentives, and firm innovation. We first show that restricted stock is negatively associated with R&D investment. We also show that CEO restricted stock is positively related to the number of patents granted and citations received. However, further investigation shows that CEO restricted stock has a positive relation with firm exploitation but a negative relation with firm exploration and breakthrough innovation. The results suggest that restricted stock appears to incentivize CEOs to make efficient R&D investments and produce more innovative outputs in general, but only through exploitation rather than exploration and breakthrough innovations. [ABSTRACT FROM AUTHOR]

Published
2024
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