Organic electroluminescent diodes (OLEDs) have great potential for applications in the field of display and illumination, and have attracted wide attention from the academic and industrial communities. Luminescent materials are the core part of OLEDs. Currently, the efficiency and stability of green-light and red-light material devices based on platinum-based heavy metal complexes have reached practical requirements. However, the development of stable and efficient blue light material devices has progressed slowly, becoming the OLED industry. The bottleneck of development. In recent years, organic small molecule thermally activated delayed fluorescence (TADF) materials have become the most promising type of organic electroluminescent material that can achieve breakthroughs in this area. Recently, the Canton University Key Laboratory of Functional Nanostructure Design and Assembly, Institute of Material Structures, Chinese Academy of Sciences, Lu Canzhong has designed and synthesized a class of high-efficiency TADF blue light materials B-oCz and B-oTC. Through the reasonable molecular design, a minimum minimum single-triplet excited state energy gap (DEST) and a large radiative transition rate are simultaneously achieved. At the same time, the non-radioactive transition of the molecule is effectively suppressed. Among them, B-oTC has a small concentration quenching effect in the film, and its pure film photoluminescence efficiency is as high as 94%. The external quantum efficiency of the undoped blue OLED device prepared by solution processing method is 19.1%. The relevant research results were published in "German Applied Chemistry." Previously, the research team has made series of progresses in the design synthesis of univalent copper and silver complex luminescent materials, luminescence mechanism, and device performance research. The research work was supported by the National Natural Science Foundation of China and the key deployment projects of the Chinese Academy of Sciences. Black Floor Drain,Anti Odor Black Floor Drain,Black Tile Insert Floor Drain,Long Rectangular Black Floor Drain Kaiping City Jinqiang Hardware Products Co.,Ltd , https://www.jmpowerdrain.com
Advances in research on all electroluminescent materials and devices for Fujian structures