Quantum dots can be made from rice husks.
Anyone who has ever dealt intensively with the subject of televisions or monitors will sooner or later have stumbled across QLED technology. Devices based on quantum dot LEDs have the reputation of displaying colors particularly well and brightly. However, production is complex and requires, among other things, toxic chemical elements such as cadmium and lead.
However, Japanese scientists at the Natural Science Center for Basic Research and Development at the University of Hiroshima have now made a technological breakthrough that could not only significantly reduce the need for transition and heavy metals, but also use a waste product from agriculture. Your next TV or monitor could therefore be partly made of rice.
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To be precise: from rice husks. From this one can publication according to (via Toms Hardware) namely to produce porous silicon. This in turn can be used in many areas of application, including the production of the so-called Quantum Dots for Samsung televisions.
What are quantum dots? The quantum dots are photoactive structures just a few nanometers in size. This means they can absorb light and emit it again. Depending on the size of the quantum dot, the light is represented in a specific color.
You can imagine it like this: A light source, the so-called LED layer, emits photons. These then hit a layer of quantum dots. For example, if the light hits a quantum dot measuring two nanometers, it turns into blue light. Other quantum dots convert into red and green light – the so-called primary colors. The actual colors are mixed together from these and displayed on the screen.
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When are the first rice screens coming? This can take a while. The scientists are not yet completely satisfied with the luminosity. So, even in the lab, there is still some work to be done. Only then can the commercial implementation, i.e. series production, be worked on.
What do you think of this discovery? Sensation or just a small side note? Feel free to write it in the comments!
