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2024
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Industry New Knowledge... "Science" 3D printing can create multi-color light-emitting structures.
Author:
Industry new knowledge
Recently, the team of Yang Peidong (foreign academician of the Chinese Academy of Sciences, academician of the National Academy of Sciences, academician of the American Academy of Arts and Sciences) of the three academies of China and the United States published a research entitled Supramolecular assembly of blue and green halide perovskites with near-unity photoluminescence in the Science,Photoluminescence materials with higher conversion efficiency are prepared, and the three-dimensional structure is manufactured by 3D printing, which is a further extension of the application.
Original link: https://www.science.org/doi/10.1126/science.adi4196
Adventure Technology official website: http://www.adventuretech.cn/
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research content
This article mainly focuses on the synthesis of halide perovskite materials and their application in high-efficiency light-emitting diodes (LEDs), but in which 3D printing technology plays a key role:
● Researchers used 3D printing technology to precisely control the structure and morphology of halide perovskite materials. Through 3D printing technology, a highly uniform distribution of halide perovskite films was achieved, which is essential to improve the performance of LEDs.
By optimizing the 3D printing process, the researchers have successfully prepared blue and green halide perovskite materials with photoluminescence quantum yields close to 100 percent, and the highly efficient photoluminescence properties indicate that these materials are well suited for the fabrication of high-efficiency LEDs.
● Halide perovskite LEDs fabricated using 3D printing technology demonstrate excellent brightness, stability and color purity. Compared with traditional manufacturing methods, 3D printing technology makes the prepared LEDs have higher uniformity and consistency, thereby improving the overall performance.
△ Figure 1,[HfBr6]2-Two assemblies of ionic octahedra.
△ Figure 2, luminescence characterization.
3, photophysical analysis of (18C6 @ K)2HfBr6 and (18C6 @ K)2ZrCl4Br2.
4,(a) scratch test results of a single-layer LCC/PSZ thermistor; (B) scratch test results of a double-layer thermistor with an additional protective layer.
△ Figure 5, to achieve blue-green two-color 3D printing. (A) Schematic diagram of the multi-material 3D printing process. (B and C) Two 3D printed luminous Eiffel Towers excited by white light (B) and 254 nm ultraviolet light. (D) Two-color luminescence Eiffel Tower under UV excitation at 254 nm. (E to H) Conformal and distorted octagonal trusses with different hierarchical structures and geometries, including cubic octahedron, tetradyhedron, and Menger sponge structures, with blue and green emitters or combinations thereof, respectively. These printed structures were photoexcited at 254 nm..
research conclusion
This research offers the possibility of mass production of high quality halide perovskite LEDs using 3D printing technology. 3D printing technology not only helps to improve the efficiency of LEDs, but also has the potential to reduce production costs and simplify the manufacturing process. The progress of this technology is of great significance to promote the development of display technology and lighting in the future.
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