Nanoplasmonic ‘Whispering Gallery’ Breaks Emission Time Record in Semiconductors

Renaissance architects built into their cathedrals whispering galleries, circular chambers designed to amplify and direct sound waves so that, when standing in the right spot, a whisper could be heard from across the room. Scientists at the University of Pennsylvania have applied the same principle on the nanoscale to drastically reduce emission lifetime, a key property of semiconductors, which can lead to the development of new ultrafast photonic devices. The Penn team’s semiconductor nanowires can jump directly from a high-energy excited state to the ground, all but eliminating the cool-down period.

Learn more from the University of Pennsylvania.

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