The nanocrystals used in this solar cell developed by scientists at the University of Southern California are made of semiconductor cadmium selenide, which is about 4 nanometers in size, which means that 250 billion can be placed on a needle, and it can also float in a liquid solution. Inside. Richard Boucher, the research leader and associate professor of chemistry at the University of Southern California's College of Arts and Sciences, said: "Like printing newspapers, we can also print solar cells." Although the liquid nanocrystalline solar cell is cheaper to manufacture than the currently widely used single crystal silicon wafer solar cells, its photoelectric conversion efficiency is slightly inferior. However, in the latest research, researchers have tackled the key issue in the manufacture of liquid solar cells: how to make a stable and electrically conductive liquid. Previously, scientists needed to attach organic ligand molecules to the nanocrystals to keep the nanocrystals stable and prevent them from sticking together. However, these organic ligand molecules also isolate the crystals, making the electrical conductivity of the entire system very poor. Bucher said: "This has always been a major challenge in this area." To this end, Bucher and the postdoctoral researcher at the University of Southern California, David Weber, developed a new surface coating for this nanocrystal. This new synthetic ligand not only performs well in stabilizing nanocrystals, but they also turn into tiny "bridges" that connect the nanocrystals and help them carry current. In addition, through a relatively low temperature process that does not require any melting-related processes, scientists can print this liquid solar cell on a plastic rather than glass surface, resulting in a flexible solar panel that can be shaped as needed. Change to install anywhere. Bucher said that he plans to use other materials instead of toxic cadmium to make nanocrystals. He also pointed out: "Although it will take several years to commercialize this technology, they have clearly seen that this technology can be perfectly integrated with the next generation of solar cell technology." Editor-in-Chief: Regardless of the status of the global PV industry in the past two years, purely in terms of technology routes, crystalline silicon still firmly occupies the leading position of photovoltaic rivers and lakes. Therefore, a photovoltaic system that is basically a film technology route and can be printed like a newspaper Battery technology, at this stage, looks like an awning boat that floats on the edge of the wheel. However, just as many years ago, few people believed that relying on the sun could generate electricity. If liquid photovoltaic cells can continue to break through the problems of material, structure and photoelectric conversion efficiency like this time, the future commercialization prospects are immeasurable. After all, it has a wide range of flexibility and flexibility that crystalline silicon cells do not have in terms of application, and the natural cost advantage is beyond the long-term efforts of the latter. Aluminum profiles for doors and windows Curtain Wall,Floor Spring Door Square Section,Aluminum Sliding Doors And Windows,Aluminium Extrusion Windows Frame Foshan Modern Copper & Aluminum Extrusion Co.,Ltd. , https://www.fsmodernaluminium.com
Printable micro-liquid solar cells come out
According to a report by the physicist organization network on April 26 (Beijing time), American scientists said that they have recently developed a cheap and stable liquid solar cell. The battery made of nanocrystals is "very small" and can therefore be in the form of liquid ink that can be printed or applied to the surface of a clean substrate. The latest research was published in the International Journal of Inorganic Chemistry, Dalton Journal, published by the Royal Society of Chemistry.