An international research team reported in the U.S. Journal of Scientific progress that they invented a new, simple and economical way to produce semiconductor nanocrystals of different sizes as needed, and to help achieve the industrialized mass production of the next generation of colored light-emitting diodes (LEDs).
Researchers at the University of Munich in Germany have found that semiconductors used in light-emitting diodes, on nanoscale scales, change the size of the semiconductor crystals, allowing them to emit different colors of light, which range from blue to red to visible light, with high color purity.
The researchers developed a method of using low-cost perovskite materials to produce semiconductor crystals in size. Its core is a thin film with only a few nanometers thick, it consists of silicon and alumina nano-porous materials, a large number of micro-pores can act as a chemical reaction vessel, the raw material solution in the microporous reaction, the formation of perovskite nano-crystal.
The experimental results show that the size of the micro-pores directly affects the size of the nanometer crystals, thus determining the luminous color. The nanometer crystals made by this method are very stable and can make the light-emitting diode achieve higher color fidelity.
