Cambridge research team breakthrough perovskite materials LED technology

  A joint research team, which is consisted by Cambridge University, Oxford University and the University of Munich, recently demonstrated a new application field of perovskite materials: high brightness LED used in preparation various colors. It is known that the research team uses an organic metal halide perovskite material containing lead, carbon-based ions and halide ions, soluble in common solvents, the perovskite crystal is formed after drying, the preparation process is cheap and simple.

   By designing the structure of the diode, the researchers limit the electric charge into a very thin perovskite lamella, thus create the conditions of electron-hole capture process and finally achieve the light emission.

   Process for preparing perovskite LED is simple and may be mass-produced: Perovskite solution was spin-coated on the substrate, without high-temperature heating step and high-vacuum conditions. According to the project leader, Professor Sir Richard Friend from Cambridge University Cavendish Laboratory, via the simple process, it can still show a very significant semiconductor properties, without complex purification process required for traditional semiconductors such as silicon. It is known that the first commercial LED perovskite is expected to come out within five years.

(Source: reprint from CALI)