WUHAN, China (May 28, 2019) - Wuhan Optoelectronics Forum No. 156 was successfully held in Auditorium A301 at Wuhan National Laboratory for Optoelectronics (WNLO) in the morning of May 28. Prof. Bernard Kippelen from Georgia Institute of Technology delivered an exciting talk entitled Organic Semiconductors in the Fourth Industrial Revolution. Dr. Yinhua Zhou, from WNLO chaired the forum. Prof. Dan Zhu, Deputy Director of WNLO, awarded Prof. Bernard Kippelen the forum medal.
In this talk, we will discuss how printable organic conjugated semiconducting molecules and polymers are creating new disruptive technologies that are impacting all industries. We will present recent advances in various solid-state device platforms including, organic light-emitting diodes (OLEDs), organic photodetectors (OPDs), organic photovoltaic devices (OPVs), and organic thin-film transistors (OTFTs). We will emphasize the importance of interfaces in devices and show examples on how to engineer their electrical properties. We will present a simple processing technique for the electrical doping of organic semiconductors over a limited depth near the surface of the film that is based on immersing the film into a polyoxometalate solution. Such approached can drastically reduce the fabrication cost of such devices, simplify device architecture, and lead to all-organic devices fabricated by all-additive printing techniques. As an illustration of the simplicity and versatility of this process we will discuss how high-performance organic solar cells with simplified architecture can be implemented. Finally, we will present the results of a detailed operational lifetime study of OTFTs showing that organic photonics and electronics can yield a stability level superior to that of amorphous silicon.
Bernard Kippelen is the Joseph M. Pettit Professor of Electrical and Computer Engineering at the Georgia Institute of Technology, located in Atlanta, GA, USA. His research interests range from the investigation of fundamental physical processes (nonlinear optical activity, charge transport, light harvesting and emission) in organic-based nanostructured thin films, to the design, fabrication and testing of light-weight flexible optoelectronic devices based on hybrid printable materials. He is a co-founder and co-President of the Institut Lafayette, an innovation platform located on Georgia Tech’s European campus Georgia Tech Lorraine (Metz, France), and serves as Director of the Center for Organic Photonics and Electronics on the Georgia Tech campus in Atlanta. He is the fellow of Optical Society of America (OSA) and the fellow of Society of Photo-Optical Instrumentation Engineers (SPIE).
