Optical nanocavity boosts light absorption

In a move which may have application in flexible electronics, as well as optoelectronics, engineers from the University at Buffalo have developed a structure in which a single layer of molybdenum disulphide (MoS2) sits on top of an optical nanocavity made of aluminium oxide and aluminium.

According to the researchers, the results of their work are ‘promising’ and could help the industry to make more powerful, efficient and flexible electronic devices.

“The nanocavity we have developed has many potential applications,” says Dr Qiaoqiang Gan, an assistant professor at the university. “It could potentially be used to create more efficient and flexible solar panels and faster photodetectors for video cameras and other devices.”

The team says its experiments showed the nanocavity could absorb nearly 70% of the laser projected on it. “Its ability to absorb light and convert that light into available energy could ultimately help industry continue to more energy-efficient electronic devices,” noted researcher Haomin Song.