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The laboratory's new perovskite solar cell emits light.
One day, if your cell phone or computer is dead, you can just use the sun and continue to use it because the display is also a solar cell. This is the latest result published by the NTU scientists published in the magazine “Nature·Materialsâ€. The next-generation solar cell materials they developed can not only convert light into electricity, but also emit different colors according to needs. Light.
The material for the development of this solar cell comes from perovskite, a key material that can produce high-efficiency, low-cost solar cells. According to the physicist organization's network on March 25, Xing Guichuan, a postdoctoral researcher at the School of Physics and Materials Science at Nanyang Technological University, used laser light to illuminate the hybrid perovskite solar cell material they were studying and found that it emitted bright light. Most solar cell materials have strong light-absorbing ability and do not emit light. This surprised them.
Researchers say that this material is very light tolerant. It can capture photons into electricity, or vice versa. By adjusting the composition of the material, it also emits light of various colors, so it is suitable for making a light emitting device such as a flat panel display.
Another researcher, Nipan Matthews, an associate professor at the school's School of Materials Science and Engineering, said that using existing technology, this material can be easily applied to industry. Because it is easily dissolved in the manufacturing process, it can be combined with two or more chemicals at room temperature, which is 5 times cheaper than current silicon-based solar cells.
"As a kind of solar cell material, it can be made translucent, and it can be used as a stained glass on a window to generate electricity by using sunlight at the same time. With its light-emitting properties, it can be used outside a shopping mall or an office as a light. Decoration." Matthew said, "This material is versatile and low-cost, and it is also a promotion for green buildings. We have been studying how to scale up and use these materials as large-scale solar cells. Changing the manufacturing process of lighting equipment is also very The direct path, and more importantly, the ability of this material to respond to laser radiation is also important for the development of chip electronics."
At present, this advanced material is applying for a patent. Lamamusi Ramesh, professor of energy technology at the University of California, Berkeley, said: "The research results of this group clearly show that new materials have broad application prospects, including existing solar cells and lasers." Lijun)
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