报告摘要 |
The successful development of efficient and stable molecular blue emissive materials will have a significant impact on the continued deployment of organic light emitting diodes (OLEDs) technology for display and lighting applications. In this presentation, we will discuss our continuing efforts on the design, synthesis and characterization of novel platinum and palladium complexes for displays and lighting applications. The photo-physics, electrochemistry, electroluminescent properties and operational stability of these novel metal complexes, including deep blue narrowband emitters, blue emitters with 6-membered chelate rings and blue MADF emitters, will be discussed, particularly including our 10-year effort in the design of efficient and stable narrowband phosphorescent emitters. The rational molecular design enables us to developcyclometalatedmetal complexes with both photon-to-photon (in thin film) and electron-to-photon (in device settings) conversion efficiency close to 100% for OLED applications. Our approaches to achieve improved operational stability of blue OLED using such class will be also included. Fortunately, the quantum repeater is known to be a great platform to overcome this challenge by extending the distance between nodes. Over the past decade, nitrogen-vacancy (NV) centers in diamond have shown outstanding performance as quantum repeaters. However, when combined with nano-devices, their unstable nature presents an overwhelming challenge for practical deployment in real-life applications. As an alternative, the silicon-vacancy (SiV) color center is emerging as a potential solution. Thanks to its outstanding stability within nano-devices, it allows for near deterministic single photon - spin interactions that pave the way to practical quantum repeaters. In this seminar, I will discuss the technical problems related to quantum repeater engineering by comparing two outstanding platforms for quantum repeaters. |
报告人简介 |
Dr. Jian Li is a professor in the School for Engineering of Matter, Transport and Energy at the Arizona State University. He received his B.Sc. degree in Chemistry from Fudan University in 1997, and his M.Sc. degree in Electrical Engineering and Ph.D. degree in Chemistry from the University of Southern California during 1999-2005. In 2006, he was appointed as an assistant professor in the School of Materials at the Arizona State University and received his full-tenured promotion in 2018. His research interests include materials design and synthesis for semiconductor materials, investigating charge-transporting, energy transfer, and radiative or non-radiative decay process inside of such solids. Dr. Li has published over 70 research papers with total citations of over 12000 and a h-index of 59 (google scholar) and has received close to 100 issued US patents. He was the recipient of NSF CAREER Award and has been a symposium organizer or co-organizer for multiple MRS and OSA national meetings. |
