US media claimed that crystals form the basis of the ice blue light emitted by car headlamps, and may become the future of solar energy technology.
The United States Daily Science website reported on October 25 that crystals are the core of diodes. The crystals mentioned here are not naturally-occurring crystals present in quartz, but are crystal materials artificially made to constitute an alloy (eg, indium gallium nitride). This alloy forms light emitting diodes (within the visible range) and laser diodes (within the blue ultraviolet band).
How to make even better crystalline materials—with higher crystallinity, light emission efficiency, and luminosity—is also the work of Alex Fisher, a scientist at the Arizona State University’s Department of Physics’s Fernando Pons research team. Dr. Wei Yong (voice) is currently focusing on research. In a recent paper published in the journal Applied Physics Communications, the research team revealed the basic principles of a new method for the development of indium gallium nitride crystal materials for diodes. This new method is expected to promote breakthroughs in photovoltaic solar cell technology. Sexual efficiency. Collaborating with the team was a research team headed by Professor Alan Doolittle of the Georgia Institute of Technology.
Reports indicate that these indium gallium nitride crystals are layered structures grown on sapphire substrates. As usual, the researchers found differences in the atomic spacing of these layered structures: this phenomenon may lead to high pressures, growth interruptions, and fluctuations in the chemical composition of the alloy.
Professor Pons said: “It will be very beneficial to weaken this pressure and improve the uniformity of the indium gallium nitride crystal formation process, but this is very difficult to achieve. Cultivating these layered structures is similar to trying to make the honeycomb different in size. When the honeycombs are seamlessly combined and the two honeycombs are brought together, the difference in size disrupts the regular arrangement of the cells."
According to the researchers' accounts, the method they invented used molecular pulses to obtain the desired alloy composition. This method, invented by Doolittle, is called "modulation-orientation epitaxy." Pons said: "This technology makes it possible for layered growth of crystalline materials at the atomic level.
The author of the paper, Fisher, and coworker Wei Yong analyzed the atomic arrangement and luminosity at the nanometer level. The results show that the films grown using the epitaxial epitaxy technique possess almost ideal characteristics and reveal that this unexpected result results from the decrease in pressure during the growth of the first atomic layer of the crystal.
Pons said: "Dolittle's team assembled a more uniform and crystal lattice can be matched together in the ultimate crystal ... to get a similar to a perfect crystal film. Luminance is also close to the perfect crystal. It was once considered impossible in our field."
The report said that eliminating the inhomogeneities of crystal material composition and lattice mismatches, which once appeared to be insurmountable defects, will eventually mean that light-emitting diodes and solar photovoltaic products with greatly improved efficiency can be developed in the future.
Poly Solar Panel,230W Solar Panel,210W Polysilicon Solar Panel,230 Watt Solar Panel
Zhejiang G&P New Energy Technology Co.,Ltd , https://www.solarpanelgp.com