Scientists at the National Laboratory named after him. Lawrence to Berkeley picked up a promising, cost-effective and environmentally friendly ink composition for a wide range of applications in production and everyday life. The new product will contribute to the production of a new generation of displays for electronics, be used in clothing and serve as the basis for 3D printing of luminous and luminous models.
“By replacing precious metals with materials more readily available in nature, our supramolecular technology [супермолекулярных] Ink could be crucial for the OLED display industry. said project leader Peidong Yang, senior scientist in the materials science department at Berkeley Lab and professor of chemistry, materials science and engineering at the University of California, Berkeley. “Even more exciting, the technology could also expand its application to printing organic films for wearable devices, as well as luminous designs and sculptures.”
Researchers explained it in a journal article Sciencethat the new material consists of powders containing hafnium (Hf) and zirconium (Zr) that can be mixed in solution at relatively low temperatures: from room temperature to about 80 ° C. When heated, “ink” is created, which can then be used as desired. Such modest warming will significantly reduce production costs, which are usually quite energy-intensive if we talk about modern realities.
Additionally, the new ink could spur the development of more environmentally friendly perovskite-based films. They could replace current perovskite-lead compounds and provide a greener alternative to promising luminous and photoconverting perovskite films.
But that lies in the distant future. The supermolecular composition discovered at Berkeley was tested for luminescence and its effectiveness. It turned out that when illuminated with ultraviolet light, the material transfers almost 100% of the energy into the optical range. This is a rare achievement that will maximize the efficiency of future flat panel displays. Only compounds for the blue and green spectrum have been found, while the red spectrum has not yet been researched.
As an experiment, a thin-film display was made, the functionality of which is shown in the video above in the form of a rapid change of letters in the English alphabet. It is easy to see that even laboratory development has excellent responsiveness, which is important for displays.
No less interesting is the prospect of using a new supermolecular compound for 3D printing. Miniatures printed in this way glow, which can be used to create decorative lighting fixtures, for example. Finally, luminous ink supported by low temperature process can say a new word in clothing. This can either be work clothing for working in poor lighting conditions or everyday clothing with your own design.