Biographical Information
Jeongtae Kim received B.S degree(1982), M.S degree(1987) and Ph.D(1992) in electrical engineering from Hanyang University. He was a visiting professor of Mississippi State University from 2007~2008. Also, he was a Regular Member of CIGRE SCB1 (Insulated Cables) from 2000~2008. His main research fields are electrical insulation design and diagnosis for various electric equipment, especially partial discharge diagnostic technology.
He will give a talk on "DC Interfacial Breakdown Characteristics for the HVDC XLPE Cable Joint Model considering Maxwell-Wagner Theory".
Abstract
In this study, it is investigated the effects of interfacial space charge of interface in HVDC XLPE cable joint. A model was designed for simulating XLPE-LSR interface and the DC interfacial breakdown experiment was performed with and without DC Pre-Stress under different temperature condition. The result showed that the DC interfacial breakdown voltage decreased due to DC Pre-Stress, suggesting a role of space charge accumulated on interface, which can be analyzed by Maxwell-Wagner Theory.
Biographical Information
Jun Young Kim received the B.S degree (2008.02) in Department of Electrical Engineering from Soongsil University and M.S degree (2010.08), Ph.D (2014.08) in Department of Electrical and Computer Engineering from Seoul National University. He conducted research on soluble OLED in LG Display from August 2014 to October 2016, and conducted a research on soluble OLED & printed electronics in KITECH (Korea Institute of Industrial Technology) from November 2016 to August 2018. Currently, he is an assistant professor at the Department of Semiconductor Engineering, Gyeongsang National University. His research interests are soluble OLED & QLED devices (next generation display) and photovoltaic device (next generation energy source).
He will give a talk on "Enhanced Photovoltaic Performance of Polymer Solar Cell".
Abstract
Recently, organic solar cells have made a lot of progress, and the efficiency is about 15%. This presentation will introduce the latest articles on how to increase efficiency. And we will discuss ways in which organic solar cells can be commercialized from a long-term perspective. We will also introduce the results of the research on the efficiency improvement of the organic solar cell which we conducted. In a detail, we have investigated the effect of several metal doping and properties of doped ZnO thin films and have fabricated inverted polymer solar cells with doped ZnO interfacial layer based on PTB7:PCBM and PCPDTBT:PCBM. The ZnO and doped ZnO thin films were prepared by sol-gel spin coating method.