New quantum dot preparation technology to precisely control the color of light may lead a new era of LED lighting

Science and Technology Daily News, quantum dots have had a wide-ranging commercial impact on LED technology, and now, improving its manufacturing steps and increasing profits are the focus of the research field. According to the report on the Spectroscopy website of the Institute of Electrical and Electronics Engineers, researchers at Oregon State University in the United States recently demonstrated a new quantum dot manufacturing technology that not only ensures that the size and shape of the manufactured quantum dots are consistent, but also More precise color control may mean the advent of a new era of LED lighting.

　　 In the study published in the "Journal of Nanoparticle Research", the research team used a chemical reactor called "continuous flow". Chemical substances are continuously put into the reactor and produce continuous LED lighting. This continuous flow device makes the process of manufacturing LED lighting cheaper, faster, and highly malleable. At the same time, they used microwaves to heat the reagents, which solved the problem of how to precisely control the temperature in the chemical reaction. This kind of microwave device works similarly to the microwave oven you use at home.

　　 Researchers believe that this method will bring about tremendous changes in the field of LED lighting. Since this method can produce quantum dots of consistent size and shape, its flexibility ensures that manufacturers can produce quantum dots with multiple uses. Smaller quantum dots can emit green light, and larger quantum dots can emit orange to red light.

　　 "We may eventually produce low-cost, high-efficiency LED lighting, and can achieve the effect of white light lamps people want," said Greg Herman, associate professor of chemical engineering at the university. The research team believes that their precise manufacturing method can bring better color control compared with other quantum dot manufacturing technologies.

"At the same time, this technology uses non-toxic materials and greatly reduces material waste, which will reduce production costs and protect the environment." Herman explained that compared with cadmium commonly used in LED lighting systems, quantum dots use Copper indium diselenide compound materials are more environmentally friendly.

　　 Researchers said that quantum dots made by this method can provide another "cheap" option for many fields such as optics, electronics, and biomedicine.