R & D team successfully developed the most efficient perovskite LED

Learned from the Nanjing University of Technology, Jiangsu Provincial Key Laboratory of flexible electronics academician Huang Wei, Professor Wang Jianpu team in perovskite light-emitting diode (LED) research has made a major breakthrough, their innovative design and system of a multi quantum well structure of perovskite LED was prepared. The other perovskite LED device efficiency and stability than international counterparts reported. This breakthrough has been published in the International Journal of Photonics (Nature).

In recent years, LED has been widely recognized in the field of lighting and display because of its characteristics of energy saving, environmental protection, safety, low power consumption and high brightness. Familiar with the market in recent years in different inorganic LED, small size display organic light emitting diode (OLED) is originated from the field of preparation process, preparation of large size flexible devices, has irreplaceable advantages, has been used in mobile phone, TV and other electronic products, such as many people have in life use the curved screen mobile phone. At present, the efficiency and stability of OLED devices, as well as the cost of manufacturing, need to be further improved, which is the main limiting factor for OLED to expand its application.

Organic inorganic hybrid perovskite materials have the advantages of organic and inorganic semiconductor materials. For the two-dimensional perovskite materials of low luminous efficiency, three-dimensional perovskite film and the problem of poor stability, Huang Wei team creatively adopts the solution processing method will be used to improve the luminous efficiency of quantum well structure devices into the perovskite LED inorganic LED, has developed a multi quantum well structure light-emitting materials with perovskite, two-dimensional perovskite materials the film quality and high dimensional perovskite materials with high luminous efficiency advantages. The use of such a tunable multi quantum well perovskite materials, creating the world's highest energy conversion efficiency of perovskite LED.

According to reports, the work of perovskite materials and its research in the field of luminescence has opened up a new research direction, is expected to further study in the future, based on the realization of industrialization in the future.

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