Seminar & Colloquium
[세미나: 11월 9일(수), 오후 2시] Prof. Ji-Seon Kim, Imperial College London
Title
Key Molecular Design Rules for High-Performance Organic Optoelectronic Devices
Speaker
Prof. Ji-Seon Kim, Department of Physics & Centre for Processable Electronics, Imperial College London
Biography
Ji-Seon Kim is Professor of Solid State Physics and Director of the EPSRC Centre for Doctoral Training in Plastic Electronic Materials and MRes in Soft Electronic Materials at Imperial College London, UK. She also holds a specially appointed Professorship at Tokyo Institute of Technology, Japan, and held a WCU Invited Professorship at KAIST, South Korea. Her research focuses on the basic science and technology of Soft Electronic Materials (Organic and Hybrids) for Display, Energy and Bio applications, as well as developing new Nanometrology for these materials. She has been lead or co-investigator on a number of interdisciplinary research projects and has published over 250 papers with H-index of 68 and over 18,700 total citations. She has strong collaborative links to world leading national and international industrial organisations including Samsung Electronics (Korea), CSEM (Brazil), KP-Technology (UK) and Cambridge Display Technology/ Sumitomo Chemical Company (UK/Japan).
| Date | Wednesday, November 9th, 2022
| Time | 14:00 ~
| Venue | 33동 125호 (WCU 다목적실)
[Abstract]
Soft electronic materials such as organic semiconductors have attracted a huge interest for display, sustainable energy and healthcare applications. These applications include organic light-emitting diodes (OLED), photovoltaics (OPV), photodetectors (OPD), electrochemical transistors (OECT), biosensors and solar fuel devices. One of the key challenges for the development of these devices is a fundamental understanding of the organic semiconductor thin films in terms of their structure-property relationship. Although promising, there is still a lack of clear understanding of the impact of molecular structures on photophysical and electrochemical processes, and device structures on interfacial energetics and properties, which are critical for high-performance organic optoelectronic devices.
In this talk, I will introduce our recent work in three main research areas such as OPV, OPD and OECT. First, I will discuss the importance of molecular design on efficiency and photostability of OPV materials with a particular focus on non-fullerene acceptors. Second, I will discuss the molecular origin of high-performance in OPD devices, showing the key differences between OPD and OPV devices in terms of their operational mechanisms and requirements for molecular design. Third, I will discuss the key molecular design rules for high-performance OECTs, where charge transport occurs via mixed electronic and ionic conduction. As such, it is now critical to understand the molecular origins in much deeper detail than before to direct synthesis of organic semiconductors in more promising directions.
| Host | 이태우 교수 (880-8021)