An international scientific team reported in the US “Scientific Progress†magazine that they invented a simple and economical new method to manufacture semiconductor nanocrystals of different sizes as needed, which will help realize the industrialization of next-generation color LEDs. produce. Researchers at institutions such as the University of Munich, Germany, found that for semiconductors used in light-emitting diodes, changing the size of semiconductor crystals on the nanometer scale allows them to emit light of different colors, with luminescence ranging from blue to red visible light. High purity of color.
Researchers have developed a method to produce semiconducting crystals that are based on size requirements using low-cost perovskite materials. At its core is a thin film mold that is only a few nanometers thick. It consists of a nanoporous material containing silicon and aluminum oxide. A large number of micropores can act as chemical reaction vessels. The raw material solution reacts in the micropores to generate perovskite nanocrystals. Crystals.
Experiments have shown that the size of the micropores in the film mold directly affects the size of the nanocrystals and thus determines the luminescent color. The nanocrystals prepared by this method are very stable, enabling the LEDs to achieve high color fidelity.
The researchers stated that they will further increase the production efficiency of the method and expand the scope of application, such as the production of flexible color displays.
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