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A Light Bright and Tiny: Scientists build a better Nanoscale LED

A glowing purple bar representing the LED is attached to a green surface by a yellow metal contact.
Credit: B. Nikoobakht, N. Hanacek/NIST
The fin LED pixel design includes the glowing zinc oxide fin (purple), isolating dielectric material (green), and metal contact (yellow atop green). The microscopic fins, which the research team arranged into comb-like arrays, show an increase in brightness of 100 to 1,000 times over conventional submicron-sized LED designs. 

New design overcomes long-standing LED efficiency problem – and can transform into a laser to boot. A new design for light-emitting diodes (LEDs) developed by a team including scientists at the National Institute of Standards and Technology (NIST) may hold the key to overcoming a long-standing limitation in the light sources’ efficiency...

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