According to media reports, Cambridge researchers have found a breakthrough inkjet print "formula", can achieve the next generation of high power laser and optoelectronic technology in mass production.
A study led by Dr Tawfique Hasan, of the University of Cambridge, China, found that black phosphorus (BP) ink is a unique two-dimensional material similar to that of graphene, which is compatible with traditional inkjet printing technology, making it possible for the first time BP's laser and optoelectronic devices can be expanded to large-scale manufacturing.
The interdisciplinary team of scientists from Cambridge, London Imperial College of Technology, the University of Alto, Finnish University of Aeronautics and Astronautics, and Zhejiang University have carefully optimized the chemical composition of BP to achieve a stable ink through the balance of complex and competitive fluid effects. In this way, it is possible to produce new functional lasers and optoelectronic devices through high-speed printing.
Due to the rapid drying characteristics of the BP ink, the final print quality of the manufactured equipment (green laser pointer and photodetectors) has a high quality and uniformity. BP contains useful features for electronic and optoelectronic devices, including semiconductor bandgap widths that cover visible and near-infrared regions of the electromagnetic spectrum.
"The ink formulation achieves a highly uniform inkjet print that does not degrade in the surrounding environment, making the photoelectric sensors based on 2D materials closer to reality, given that the BP material is used," says Guohua Hu, the lead author of the research paper. For future applications, this approach represents a significant scientific and technological achievement, which contains a very small "thin" BP functional ink that enables us to print on a variety of substrates, including long-term stability plastic."
Professor Meng Zhang from Beijing University of Aeronautics and Astronautics has led the work of printing BP-based nonlinear optics, which can be easily inserted into the blue laser pointer as an ultrafast optical shutter. The continuous radiation laser beam is converted into a series of repetitive very short bursts of light (or pulses) that are well suited for industrial and medical applications such as machining, drilling, imaging, and sensing. Professor Zhang said: "Compared to any other previous demonstration, we used the design of BP's nonlinear optics to significantly improve the performance and stability of the device." That's what we use BP's ink formulation to mark the adoption of this new Materials produced by the new photonic devices and the advantages of a significant transformation of the structure. "
As part of the study, the team also demonstrated the performance of BP as an efficient and highly responsive photodetector, exceeding the wavelength range currently achieved by conventional silicon-based photodetectors. BP is a particularly interesting post-graphene material that offers many opportunities for new 100mw laser pointer and optoelectronic devices. However, despite its outstanding performance in the laboratory, the development of this unique graphene crystal in the real world has been hampered by the manufacture of complex materials and its environmental stability. But a breakthrough in BP ink will change all of this because the ink itself can be seamlessly integrated with existing metal oxide semiconductor device (CMOS) technology.
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