According to foreign media reports, researchers at the Russian Siberian Federal University (Siberian Federal University) and the Royal Institute of Technology in Stockholm (Sweden) discovered the new characteristics of palladium-based materials, or may improve the performance of solar cells.
(Source: Siberian Federal University official website)
Palladium diselenide is a very promising material, and its performance has not been fully studied. For example, it has been reported that its two-dimensional structure can be effectively used in photocatalytic (the process of decomposing into hydrogen and oxygen when water is exposed to sunlight to produce ecological fuel). Recently, researchers have learned the methods of synthesizing single-layer and double-layer palladium diselenide (PdSe2) composites, but still do not understand the advantages and disadvantages of such materials. This time, the researchers used a high-precision calculation method for the first time to conduct detailed studies on the electronic and optical properties of single-layer and double-layer materials based on palladium diselenide. Than it can absorb solar energy more efficiently.
Artem Kuklin, a researcher at the Siberian Federal University, said: "Compared with the silicon-based elements currently used as semiconductors, this type of material has a wider energy absorption spectrum and converts solar energy into electrical energy faster, so it can significantly improve the efficiency of solar cells. In most cases, the efficiency of this material is very reasonable relative to the cost of the aerospace industry, so palladium diselenide can be used as a solar cell element for spacecraft and artificial earth satellites. "
In order to perform high-precision calculations on material properties, the scientists used the Akademik Matrosov Super of the Matrosov Institute for System Dynamics and Control Theory of the Siberian Branch of the RAS. computer.
Due to the high degree of environmental protection and relatively low cost of solar energy, the proportion of Russian "solar energy" in energy has steadily increased. Artem Kuklin said: "At present, there are 10" solar "power stations in China, with a total capacity of 100 MW, accounting for 0.04% of the total installed capacity of the Russian power system. The cost of generating electricity from diesel generators is high, but solar devices can greatly reduce energy Cost. Our goal is to develop more advanced materials and improve the efficiency of solar cells. "
The researchers said they will continue research and development work to explore the effect of the material defect on its performance and the possibility of defect formation. After learning how to manage such defects, scientists can create materials with predictive characteristics that may one day be approved for solar cells in electric vehicles. (Author: Yuqiu Yun)
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