Perovskite material preparation LED breakthrough

A joint research team of Cambridge University, Oxford University and the University of Munich in Germany recently demonstrated a new application area for perovskite materials: high-brightness LEDs for the production of various colors. It is understood that the research team used a class of organometallic halide perovskite materials containing lead, carbon-based ions and halide ions, which are easily soluble in common solvents and form perovskite crystals after drying. The preparation process is low and simple. By designing the diode structure, the researchers confined the charge to a very thin layer of perovskite, creating conditions for the electron-hole capture process to achieve luminescence.

The preparation process of the perovskite LED is simple and can be manufactured on a large scale: the perovskite solution is spin-coated on the substrate without a high temperature heating step and high vacuum conditions. According to the project leader and Professor Sirrichardfriend of the University of Cambridge's Cavendish Laboratory, through the above simple process, it is still possible to exhibit very obvious semiconductor properties without the complicated purification process required by semiconductors such as conventional silicon. It is understood that the first commercial perovskite LED is expected to be available within five years.

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