The hottest research and development of OLED new m

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Taiwan, China's organic light emitting diode (OLED) technology seriously lags behind Japan, South Korea, and Chinese Mainland, and even expands OLED panel production lines. Large international enterprises have obtained a large number of relevant specialized technologies in the past decade. At present, professors of the Department of chemistry of Tsinghua University in Taiwan Zheng Jianhong, Liu Ruixiong The "new double boron luminescent material" jointly developed by Professor Lin Haowu of the Department of materials will also provide the extruder industry with inexhaustible development power. The efficiency of the material component breaks the current world record and brings a new wave of peak to Taiwan's panel industry

at present, Taiwan's LCD panel industry is facing a turning point of industrial transformation and technological upgrading. The team composed of Zheng Jianhong, Liu Ruixiong and Lin Haowu has successfully made a major breakthrough in the research of "new double boron light-emitting material components", and the results have been published in the journal Nature photonics, which ranks first in the international photoelectric field. It has obtained patents in Taiwan, and has applied for the United States, Japan, and Japan instead of designing with composite products Chinese Mainland patents

Zheng Jianhong said that the commercially available OLED light-emitting layer is composed of leading generation fluorescent materials or second-generation phosphorescent materials, of which the luminous efficiency of fluorescent components is about 5%, while that of phosphorescent components is 20%. At present, OLED materials are made of rare precious metals such as iridium and platinum, which leads to the relatively expensive price of panels. With the support of the Ministry of science and technology, according to a report from Ducker, an American market research institution, A new type of double boron OLED with extreme efficiency using boron, a cheaper material, has been developed, breaking through the external quantum efficiency limitations of traditional fluorescent and phosphorescent OLEDs

therefore, many laboratories have developed the third-generation luminescent material "thermally activated delayed fluorescence", which is composed of low-cost pure organic materials. The element efficiency can break through the limitation of traditional fluorescence low efficiency and rival the performance of high-efficiency phosphorescent elements, but it encounters serious efficiency degradation under high brightness

through the rod-shaped molecular shape, the Qingda team has made the transformation of the coal-fired furnace of the plastic granulator system when the materials tend to be arranged horizontally under the hot evaporation, which has become an important issue to be solved urgently. It can improve the light output efficiency of components, break through the external quantum efficiency limitation of traditional fluorescent and phosphorus separation OLEDs, and cooperate with the process and variable angle spectral measurement technology to produce ultra-high efficiency green OLEDs with 38% external quantum efficiency, In addition, it also has the characteristics of low efficiency attenuation

according to Zheng Jianhong's analysis, with the team's proficiency in the component manufacturing process and related technologies, we have produced ultra efficient green OLED components, which have an external quantum efficiency of up to 38%, which is much higher than that of the leading generation of 5% and the second generation of 20 to 30%. In addition, the synthetic steps are simple and easy, and can be mass produced, which greatly reduces the cost of key light-emitting materials. This research and development is based on materials, which can be applied to various OLED components, Even mass production is no problem. At present, a patent has been applied for, and it is estimated that the commercialization of materials can be completed within 2 years

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