This “nanocavity” may improve ultrathin solar panels, video cameras and other optoelectronic devices
http://www.buffalo.edu/news/releases/2016/05/028.html[font face=Serif][font size=5]This nanocavity may improve ultrathin solar panels, video cameras and other optoelectronic devices[/font]
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An optical nanocavity made, from top to bottom, of molybdenum disulfide (MoS₂ ), aluminum oxide and aluminum. Credit: University at Buffalo.[/font]
By Cory Nealon
Release Date: May 13, 2016
[font size=3]BUFFALO, N.Y.
One of the latest advancements in these fields centers on molybdenum disulfide (MoS), a two-dimensional semiconductor that, while commonly used in lubricants and steel alloys, is still being explored in optoelectronics.
Recently, engineers placed a single layer of MoS molecules on top of a photonic structure called an optical nanocavity made of aluminum oxide and aluminum. (A nanocavity is an arrangement of mirrors that allows beams of light to circulate in closed paths. These cavities help us build things like lasers and optical fibers used for communications.)
The results, described in the paper
MoS monolayers on nanocavities: enhancement in light-matter interaction published in April by the journal 2D Materials, are promising. The MoS nanocavity can increase the amount of light that ultrathin semiconducting materials absorb. In turn, this could help industry to continue manufacturing more powerful, efficient and flexible electronic devices.
The nanocavity we have developed has many potential applications, says Qiaoqiang Gan, PhD, assistant professor of electrical engineering in the University at Buffalos School of Engineering and Applied Sciences. It could potentially be used to create more efficient and flexible solar panels, and faster photodetectors for video cameras and other devices. It may even be used to produce hydrogen fuel through water splitting more efficiently.
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