The nanowires on top of the silicon substrate absorb solar radiation. Nanowires are very likely to become the mainstream of solar cell development in the future. According to the report of the physicist's organization on March 24th, a joint research team from Denmark and Switzerland has proved that the sunlight intensity of a single nanowire that can be gathered can reach 15 times the ordinary light intensity. This surprising research The results have great potential for the development of new high-efficiency solar cells based on nanowires, which may increase the solar conversion limit. Related papers were published in the journal Nature Photonics. The structure of the nanowires is cylindrical and about 10,000 times the diameter of human hair. Nanowires have unique physical light absorption properties, and it is predicted that they have broad prospects for the development of solar cells and future quantum computers and other electronic products. In recent years, scientists at the Nanoscience Center of the Niels Bohr Institute at the University of Copenhagen in Denmark and at the Federal Institute of Technology in Lausanne, Switzerland have been exploring how to develop nanowire crystals and improve their quality. Their research found that nanowires can naturally collect sunlight in a very small area of ​​the crystal, and its light-gathering ability is 15 times that of ordinary light. Since the diameter of the nanowire crystal is smaller than the wavelength of the incident sunlight, resonance of the light intensity in and around the nanowire crystal can be caused. The study's participant, Peter Krogstrap, who just obtained a doctoral degree from the Niels Poller Institute, explained that the photons emitted through resonance are more concentrated (the transformation of solar energy is exactly the process of scattering electrons. In the realization), this helps to increase the conversion efficiency of solar energy, so that the solar cell technology based on nanowires is really improved. The typical solar energy conversion efficiency limit, the so-called Shockley-Queisser Limit, has been a bottleneck for solar cell efficiency for many years, but now it seems that this new research is likely to make this A conversion efficiency limit increases by several percentage points. For researchers, being able to break the theoretical limit is undoubtedly exciting. Although a few percent may not sound much, it will have a major impact on the development of solar cells, the use of solar energy based on nanowires, and global energy development. However, Krogasterap said that it takes several years for the solar cells made up of nanowires to be put into industrialization. (Chen Dan) Plastic Packers,Packers And Shims,Plastic Packers Bulk,Plastic Frame Packers JIANGSU RARHON TOOLS CO.,LTD , https://www.rarhontools.com
The left picture shows a scanning electron micrograph of a GaAs nanowire crystal on a silicon substrate; a single nanowire in the middle of a transmission electron microscope; and a right picture shows a crystal structure enlarged under a scanning transmission electron microscope.
Single nanowires or will increase the limit of solar energy conversion efficiency
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