Prof. Sin-Doo Lee
Prof. Sin-Doo Lee
Seoul National University, Republic of Korea
Title: Materials Consideration of Conducting Polymer Composites for Flexible Triboelectric Nanogenerators
Flexible triboelectric nanogenerators (TENGs) have attracted great attention from energy-harvesting in small, mobile, and wearable electronics. In most of TENGs, metal has been widely used as a contact layer because it will reduce the charge loss during the induction process, thereby improving the electric output. For practical applications, however, typical metals suffer from the opaqueness and the brittleness. Moreover, they usually require a vacuum-based fabrication process which is not desirable for flexible substrates. In contrast to metal, conducting polymer (CP) is promising for the contact layer in a flexible TENG owing to both high electronegativity and high transparency together with the excellent mechanical properties. In this work, we present the effect of the physical and chemical properties of the CP film on triboelectricity to optimize the output performance of the CP-based TENG. This work serves a viable scheme of designing high-performance flexible TENGs from the relationship between the film property and triboelectricity
Sin-Doo Lee is a professor of School of Electrical Engineering at Seoul National University, Korea. He received his BS and MS degrees in solid-state physics from Seoul National University, Korea in 1980 and 1982, respectively, and his Ph.D. degree in liquid crystal physics from Brandeis University, USA in 1988. Prof. Lee is one of the leading interdisciplinary scientists in physics, optics, and device engineering of soft matters such as liquid crystals, organic semiconductors, polymers, colloids, and advanced composite materials. He has authored more than 300 scientific publications and delivered over 350 conference presentations. Among his scientific and technical achievements with high reputation worldwide, the most significant contribution to the display technologies is the invention of a new class of the vertical alignment mode which has led to the advent of high-performance liquid crystal displays ranging from monitors to high-definition TVs. Prof. Lee’s achievements in soft matter science and technology have been recognized by many of distinguished members of professional societies including International Liquid Crystal Society, American Physical Society, Optical Society of America, Society for Information Displays (SID), and Society for Photonics and Instrumentation Engineers (SPIE). He has been served as a general chair/co-chair, an organizing committee chair, and a member of the program committee of major scientific societies in the area of displays, including OSA, SPIE, and SID, since early 90's. He is currently a Fellow of OSA, SPIE, and SID