Recently, China's research team has made significant breakthroughs in the field of perovskite light-emitting diodes (LEDs). By accelerating the radiation recombination rate and significantly improving the fluorescence quantum efficiency, the external quantum efficiency of perovskite LEDs has exceeded the 30% threshold, approaching the level of industrialization. The paper on related research results was recently published in the international academic journal Nature. The perovskite semiconductor material LED is an emerging type of thin film LED, which has the characteristics of simple processing technology, high brightness and efficiency. In recent years, it has attracted attention in the field of optoelectronic device research and has become the focus of global competition for new luminescent and display technologies. In recent years, the innovative team led by Huang Weiwei, chief scientist of the Flexible Electronics Research Institute of Northwestern Polytechnical University, the National Basic (Frontier) Science Center for Flexible Electronics, and professor of the School of Flexible Electronics (Future Technology) of Nanjing Polytechnical University, Wang Jianpu (currently the vice president of Changzhou University), an academician of the CAS Member, has made a series of innovative achievements in the research of perovskite LEDs. There are two types of perovskite luminescent materials: three-dimensional and low dimensional. Among them, three-dimensional perovskite has the most potential to achieve high efficiency luminescence at high brightness, which is of great significance for the industrialization of future luminescent display technology. However, the external quantum efficiency of 3D perovskite LEDs is generally around 20%, and the overall performance improvement is facing a bottleneck. To solve the global problem of improving the fluorescence quantum efficiency of three-dimensional perovskite materials, the team has taken a new approach and creatively proposed a method of regulating crystal growth to generate perovskite crystal phases with faster radiation recombination rates, thereby significantly improving the fluorescence quantum efficiency of the new process. The team successfully maintained the submicron structure of three-dimensional perovskite using this innovative method, ensuring that the light extraction efficiency of the device was not affected, achieving a dual effect. As a result, a fluorescence quantum efficiency of 96% and a light extraction efficiency of 32% were achieved, and efficient perovskite LEDs with external quantum efficiency exceeding 30% were further prepared Professor Wang Jianpu introduced it. When it comes to the development of perovskite LEDs, Academician Huang Wei said, "This major breakthrough further demonstrates the enormous potential of thin film LED technology based on perovskite semiconductor materials, and will undoubtedly promote the industrialization of display technology based on perovskite LEDs. At the same time, it indicates its broad application prospects in the field of efficient green lighting." (Xinhua News Agency)