Cleaning nanowires to get out more light

KAUST Discovery, Phys.org, and eeNews LEDLighting features "Cleaning nanowires to get out more light"

3/4/2018
"A simple chemical surface treatment improves the performance of nanowire ultraviolet light-emitting diodes."

"A technique for reducing the loss of light at the surface of semiconductor nanostructures has been demonstrated by scientists at KAUST."

"Some materials can efficiently convert the electrons in an electrical current into light. These so-called semiconductors are used to create light-emitting diodes or LEDs: small, light, energy-efficient, long-lasting devices that are increasingly prevalent in both lighting and display applications."

"Postdoc Haiding Sun and his KAUST colleagues..., have developed LEDs that are made up of a tight array of dislocation-free nanometer-scale aluminum-gallium-nitride nanowires on a titanium-coated silicon substrate."

"Researchers reported that a simple passivation step using diluted potassium hydroxide was enough to offer a nearly 50% performance boost to UV LEDs at a wavelength of 338nm."


Surface-Passivated AlGaN Nanowires for Enhanced Luminescence of Ultraviolet Light Emitting Diodes

Haiding Sun, Mohammad Khaled Shakfa, Mufasila Mumthaz Muhammed, Bilal Janjua, Kuang-Hui Li, Ronghui Lin, Tien Khee Ng, Iman S. Roqan, Boon S. Ooi, and Xiaohang Li
ACS Photonics, 5(3), 964-970 (2018)

DOI: 10.1021/acsphotonics.7b01235

HDL: 10754/626449