The ICEL 2018 is honored to have plenary speakers from around the world presenting. Their insights will bring depth and sub-
stance to the relationship between organic electroluminescence and organic electronics fields.
University of Michigan, USA
Waiting for Act 2: What is the future of organic electronics beyond LED displays?
B. A. Physics, 1972, University of California, MSc, and PhD Physics in 1974 and 1979, University of Michigan. In 1985, Prof. Forrest joined the Electrical Engineering and Materials Science Departments at USC. In 1992, Prof. Forrest became the James S. McDonnell Distinguished University Professor of Electrical Engineering at Princeton University. He served as director of the National Center for Integrated Photonic Technology, and as Director of Princeton's Center for Photonics and Optoelectronic Materials (POEM), and from 1997-2001, he chaired Princeton’s Electrical Engineering Department. In 2006, he rejoined the University of Michigan as Vice President for Research, where he is the Peter A. Franken Distinguished University Professor. A Fellow of the APS, IEEE and OSA and a member of the National Academy of Engineering and the National Academy of Sciences and the National Academy of Inventors, he received the IEEE/LEOS Distinguished Lecturer Award in 1996-97, and in 1998 he received the IPO National Distinguished Inventor Award as well as the Thomas Alva Edison Award for innovations in organic LEDs. In 1999, Prof. Forrest received the MRS Medal for work on organic thin films. In 2001, he was awarded the IEEE/LEOS William Streifer Scientific Achievement Award for advances in photodetectors for optical communications. In 2006 he received the Jan Rajchman Prize from the Society for Information Display for invention of phosphorescent OLEDs, and is the recipient of the 2007 IEEE Daniel Nobel Award for innovations in OLEDs. In 2017 he was the recipient of the IEEE Jun-Ichi Nishizawa Medal. Prof. Forrest has authored ~580 papers in refereed journals, and has 311 patents. He is co-founder or founding participant in several companies, including Sensors Unlimited, Epitaxx, Inc., NanoFlex Power Corp. (OTC: OPVS), Universal Display Corp. (NASDAQ: OLED) and Apogee Photonics, Inc., and is on the Board of Directors of Applied Materials. He is past Chairman of the Board of the University Musical Society. He has also served from 2009-2012 as Chairman of the Board of Ann Arbor SPARK, the regional economic development organization and is now on its Board of Directors. He has served on the Board of Governors of the Technion – Israel Institute of Technology where he is a Distinguished Visiting Professor of Electrical Engineering. Currently, Prof. Forrest serves as Lead Editor of Physical Review Applied and recently joined the Air Force Studies Board.
The extremely rapid adoption of organic LEDs in both mobile and television display markets has been driven by their ultrahigh efficiency, large color gamut, thin form factors and long lifetimes. But this successful experience has only given rise to the question: what's next for organic electronics? To be sure, there are other opportunities waiting in the wings. Examples include OLED lighting, organic solar cells, and even organic transistor electronics. In this talk I will present a review of what is past and present in organic electronics, and most importantly, what lies ahead. The physics and engineering of a range of organic devices will be discussed. And I will try to answer the question: what is the next big application of this emerging and exciting field of optoelectronics.
Kyushu University, Japan
Presentation Title: From TADF to SF and lasers
Prof. Adachi obtained his doctorate in Materials Science and Technology in 1991 from Kyushu University. Before returning to Kyushu University as a professor of the Center for Future Chemistry and the Department of Applied Chemistry, he held positions as a research chemist and physicist in the Chemical Products R&D Center at Ricoh Co., a research associate in the Department of Functional Polymer Science at Shinshu University, research staff in the Department of Electrical Engineering at Princeton University, and an associate professor and professor at Chitose Institute of Science and Technology. He became a distinguished professor at Kyushu University in 2010, and his current posts also include director of Kyushu University’s Center for Organic Photonics and Electronics Research (OPERA) since 2010 and program coordinator of Kyushu University’s Education Center for Global Leaders in Molecular Systems for Devices and director of the Fukuoka i3 Center for Organic Photonics and Electronics Research since 2013.
TADF OLEDs realized ultimate electroluminescence (EL) efficiencies in visible emission wavelengths. Further, near-infrared (NIR) OLEDs could benefit a variety of applications including night-vision displays, sensors and information-secured displays and bio-applications, but OLEDs are still under- performing in NIR region. Here, we report TADF OLEDs that operate at NIR wavelengths with a maximum external quantum efficiency of nearly 10% using a boron difluoride curcuminoid derivative1). By controlling the polarity of the active medium, the maximum emission wavelength of the EL spectrum can be tuned from 700 to 800 nm. As well as an effective upconversion from triplet to singlet excited states due to the non-adiabatic coupling effect, this donor–acceptor–donor compound also exhibits efficient amplified spontaneous emission (ASE) and lasing. The compatibility of upconversion and light amplification will be a feasible pathway for future current driven organic semiconductor lasers. Further, we demonstrate a novel exciton formation route for realizing high internal efficiency in IR emission over 1.5 m based on a singlet fission (SF) process that will break through the limitation of the internal quantum efficiency of 100%2).
Hong Kong University of Science and Technology, Hong Kong
Presentation Title: Electroluminescence of Doped Organic Thin Films
Ching Tang obtained his B.S. (chemistry) from the University of British Columbia in 1970 and PhD from Cornell University in 1975. He joined the University of Rochester in 2006 as the Doris John Cherry Professor of Chemical Engineering after spending 31 years as a research scientist with the Eastman Kodak Company. In 2013 he was appointed the Bank of East Asia Professor, Institute for Advanced Study, Hong Kong University of Science and Technology. He is best known for the invention of organic light emitting diodes (OLED) and organic photovoltaic cells based on a donor-acceptor heterojunction structure. Tang was elected a member of the U.S. National Academy of Engineering, the Academy of Sciences of Hong Kong, and the Hong Kong Academy of Engineering Sciences. His notable awards include the 2011 Wolf Prize in Chemistry, and most recently the 2018 induction to National Inventors Hall of Fame.
Since the publication of the titled paper in 1989, organic light emitting diode (OLED) has evolved and in recent years emerged as a key display technology. Highly electroluminescent emitters based on doped organic thin films of various formulations have been developed and now form the basis for numerous advances in OLED performance, including excellent color fidelity and significant improvements in device efficiency and lifetime. In this talk I will attempt to trace the development of doped organic emitters and reflect on the important role they have played in OLED display and lighting.
LG Display Laboratory Director, Korea
Presentation Title: The Present and Future Vision of the OLED Industry
Soo Young Yoon is the director of LG Display Laboratory. Previously, he had developed large-area transparent flexible OLED displays as the leader of OLED research division. He is currently responsible for next-generation display development and core technology as well as OLED. He received Ph.D. in Physics from Hanyang University, Korea in 1999 and worked in Philips Research Center, UK until 2002. Since then, he has been working on LG Display and developing many technologies related to display.
The OLED display market has been gradually growing in the premium TV and smartphone market because the OLED Display has advantages of better picture quality and thinner, lighter design over conventional displays. Recently, the OLED display is increasingly acknowledged its potential as a future display due to innovative products, such as wallpaper OLED, Crystal Sound OLED, large-size rollable OLED, and transparent & flexible OLED, etc. Furthermore, the OLED is expanding its business area into the lighting field based on its optical characteristics, which are very similar to the natural light, and flexible design features. However, there still remain challenges to overcome in terms of performance, design and price in order for OLED to play a major role as a main technology in the display industry beyond the LCD. In this connection, we will discuss opportunities and challenges of the OLED.