Ultraviolet light induced hardening in gallium nitride

Aluminum Gallium Nitride-based Solar-blind Ultraviolet Photodetectors

Dedication To my parents, Gary and Carol, and to my loving girlfriend Connie. v Acknowledgements I would like to express my gratitude to my supervising, Professor Joe C. Campbell, for showing me the exciting world of nitride-based optoelectronic devices. His wise advice and constant support has been the most important aspect of my research, inspiring all of the work I have accomplished. Joe Cam...

Aluminum Nitride Deep - ultraviolet Light - emitting

The shortest-wavelength color of light that is visible to the human eye is violet. As shown in Fig. 1, light with wavelengths shorter than 400 nm is called ultraviolet (UV) light: that from 300 to 400 nm is called near-UV light, that from 200 to 300 nm is called deep-UV light, and that shorter than 200 nm is called vacuum-UV light. Since vacuum-UV is absorbed by air, deep-UV light is the shorte...

History of Gallium-Nitride-Based Light-Emitting Diodes for Illumination

| The history of development for gallium–nitridebased light-emitting diodes (LEDs) is reviewed. We identify two broad developments in GaN-based LED technology: first, the key breakthroughs that enabled the development of GaN-based devices on foreign substrates like sapphire (first-generation LEDs), and, second, a new wave of devices benefiting from developments in GaN substrate manufacturing, w...

Gallium nitride nanowire based nanogenerators and light-emitting diodes.

Single-crystal n-type GaN nanowires have been grown epitaxially on a Mg-doped p-type GaN substrate. Piezoelectric nanognerators based on GaN nanowires are investigated by conductive AFM, and the results showed an output power density of nearly 12.5 mW/m(2). Luminous LED modules based on n-GaN nanowires/p-GaN substrate have been fabricated. CCD images of the lighted LED and the corresponding ele...

Laser Micromachining for Gallium Nitride Based Light-Emitting Diodes