Speakers

Prof. Liang ZHOU obtained his BEng (2002) and PhD (2011) degrees (with Prof. Hongjie Zhang) from Jilin University and Changchun Institute of Applied Chemistry, Chinese Academy of Sciences (CIAC, CAS), respectively. Since 2002, he works in CIAC as research assistant and perform the investigation on electroluminescent devices based on rare earth complexes. After his postdoctoral stay at the University of Hong Kong (with Prof. Chi-Ming Che), he came back to CIAC in 2014 as Associated Professor and was promoted to Professor in 2017. His interests are on the syntheses and application of trivalent rare earth complexes, the design of organic light-emitting diodes and the optimization of device fabrication technologies.

Investigation Progresses of Rare Earth Complexes as Emitters or Sensitizers in Organic Light-Emitting Diodes

Abstract

Due to unique photo-physical characteristics, rare earth complexes play important roles in many fields, for example, telecommunications, life science and organic light-emitting diodes (OLEDs). In particularly, thanks to high-purity emission and 100% theoretical internal quantum efficiency (IQE), the study of rare earth complexes in electroluminescence field has been hot research topic in recently thirty years. As a promising technology in next generation display and solid-state lighting fields, OLEDs have attracted great interests from academic researches and commercial endeavors. In the last decades, OLED-based products have trickled into commercial market and developed quickly in portable display devices. In this talk, we briefly introduce the luminescent characteristics and electroluminescent (EL) study of rare earth complexes in material synthesis and device design. Moreover, we emphatically reveal the innovative application of rare earth complexes as sensitizers in OLEDs. Through experimental validation, the application of rare earth complexes as sensitizers can realize the complementary advantages of rare earth complexes and transition metal complexes, leading to significantly improved performances of OLEDs. The application of rare earth complexes as sensitizers provides new strategy for designing and developing novel high performances OLEDs.