English will increase the concentrating ability of graphene by 20 times for optoelectronic equipment

[ Introduction ] British scientists said that their latest research on graphene shows that the combination of graphene and metal nanostructures can increase the concentrating power of graphene by 20 times.

According to a report by the American Physicist Network on August 30, British scientists said that their latest research on graphene shows that the combination of graphene and metal nanostructures can increase the concentrating power of graphene by 20 times. The olefinic device is expected to be used as a photosensor in future high-speed photonic communication, making the ultra-high-speed Internet, which is now dozens of times faster, a reality. Related research was published in the journal Nature-Communication.

In 2010, Andre Gem and Konstantin Novoselov of the University of Manchester in the United Kingdom won the Nobel Prize for their outstanding contributions in the field of graphene research. Now, they and Cambridge University scientists have made this latest discovery, paving the way for faster Internet and other communication facilities.

Scientists have previously discovered that placing two closely aligned wires on top of graphene, which is powered by light, is a basic solar cell. More importantly, because the electrons in graphene have unique properties such as high fluidity and high speed, graphene equipment can process data at the speed of dozens or even hundreds of times the fastest Internet cable.

However, to date, these extremely promising devices have been experiencing the bottleneck of low concentrating efficiency in the practical process. Graphene can only absorb 3% of the light that is irradiated on it to generate electricity, and the rest of the light becomes " The net of the fish."

Now, scientists have solved this problem by coupling graphene and nano-metal structures together and placing metal structures on graphene using a special arrangement. This so-called plasma nanostructure significantly enhances the optical electric field that can be induced by graphene, and can effectively concentrate light on graphene, which improves the concentrating performance of graphene by 20 times, and its data processing speed is not improved. Affected by the slightest.

The main member of the research team, plasma expert Alexander Gregory Renke, said that graphene seems to be a natural partner of plasma. They hope that plasma nanostructures can improve the performance of graphene devices. Now they not only do it, but also the result. Unexpectedly, its concentrating efficiency can be further improved.

Another participant in the study, Andrew Ferrari, a scientist at the University of Cambridge, said: "To date, the main research areas of graphene have focused on basic physics and electronics. Recent research shows that graphene is in photonics and optoelectronics. The field of study also has important application potential for a variety of useful devices such as solar cells and light sensors."

Graphene is a two-dimensional crystal which is separated from graphite material and composed of carbon atoms. It has only one layer of carbon atoms and is the thinnest and hardest material to date. Its conductivity and thermal conductivity are superior, far exceeding silicon and Other traditional semiconductor materials. Many scientists believe that graphene or silicon can be used as a future electronic component material, widely used in many fields such as supercomputers, touch screens and photonic sensors.

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