High-Output-Power Ultraviolet Light Source from Quasi-2D GaN Quantum Structure

Adv Mater. 2016 Sep;28(36):7978-7983. doi: 10.1002/adma.201600990. Epub 2016 Jul 6.

Abstract

Quasi-2D GaN layers inserted in an AlGaN matrix are proposed as a novel active region to develop a high-output-power UV light source. Such a structure is successfully achieved by precise control in molecular beam epitaxy and shows an amazing output power of ≈160 mW at 285 nm with a pulsed electron-beam excitation. This device is promising and competitive in non-line-of-sight communications or the sterilization field.

Keywords: e-beam pumping; high output power; mid-UV light sources; molecular beam epitaxy; quasi-2D GaN.