After two years, smartphones will no longer need chargingFebruary 25, 2020
Charging will occur automatically and imperceptibly for the user – through a screen equipped with new technology for converting light into energy based on a film with quantum dots. A team of Australian engineers made a breakthrough in creating solar “skin” on quantum dots – they were able to immediately improve the efficiency of electric current generation under the influence of solar energy by 25%. Their record marks an important step towards the commercial application of technology.
University of Queensland’s material engineers broke the world record for converting solar energy into electricity using quantum dots – tiny artificial crystals. These nanoparticles can be printed on flexible sheets and used as transparent artificial skin to power mobile phones and electric vehicles, glued to windows and other surfaces, Guardian reports.
Compared with traditional solar cells, the development of Australians is lightweight, flexible and able to work in low light – in cloudy weather or indoors.
The previous record for the conversion of sunlight into electricity using quantum dots is 13.4%. The team of Professor Wang Lianzhou achieved an efficiency of 16.6%. This record was recognized by the US National Renewable Energy Laboratory (NREL).
According to Professor Wang, progress of nearly 25% is a significant step towards commercializing this technology and reducing carbon dioxide emissions. This difference separates promising development from a cost-effective process. But scientists are not going to stop there. Their goal is to increase efficiency up to 20% (they are sure that this is achievable) and develop a technology for the mass production of large solar cells.
“We are going to continue to break records in this category,” Wang said.
According to Wang, his group hopes to develop a product ready for commercial use in two years that will forget about the need to charge smartphones – they can charge themselves through the screen in any light. And within three to five years, more overall solutions will have to appear on the market – for example, to power an electric car due to its surfaces that trap light and turn it into energy.
Ericsson engineers achieved a data transfer rate of 4.3 Gb / s, a record fast for the 5G standard. An entire hour of UltraHD video at this speed can be transmitted in 14 seconds. This is 4 times faster than the data transfer speed in 5G networks already deployed in different countries.
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