American scientists invent new nano-luminescence crystal materials


Researchers at the University of Rochester and Kodak recently announced that they have developed a new nano-luminous crystal material that will continue to illuminate after absorbing energy, rather than dissipating energy through heat as before. . The material is expected to be used in high-brightness LED lighting, low-cost laser manufacturing applications, etc., and can also be used to develop thinner TV and display products.

Todd Krauss, a professor at the University of Rochester, said: "Nanocrystals absorb energy from photons and dissipate energy by either luminescence or heat." The type of crystal that dissipates energy by the first method is called non-scintillation nanocrystals ( Non-blinking nanocrystal), while the second method is called blinking nanocrystal.

The professor discovered the new nanocrystalline material with researchers from Kodak, the Naval Scientific Research Laboratory, and Cornell University. This new material was synthesized by Kodak Kahen of Kodak and Megan Hahn of the Krauss Laboratory at Cornell University using a variety of different ingredients.

The resulting nanocrystals can remain in a flicker free state for 4 hours, whereas on typical nanomaterials this time is only a few microseconds to minutes. The core of this material is made of cadmium and selenium, and the case material is made of zinc and selenium, and the structure of the semiconductor material is uniformly transferred inside. In the general nanocrystal, there are obvious differences between different materials. Demarcation structure. It is this uniform transition structure that keeps the number of photons emitted from the nanocrystals consistent with the number of photons absorbed.

As long as the size of the crystal is changed, the new nanocrystalline material can emit light of various colors. Todd Krauss believes that this unnamed nanocrystal technology is expected to replace the existing OLED light-emitting technology.

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